|  | B |
SECTION B — PERFORMING OPERATIONS; TRANSPORTING

TRANSPORTING

|  | B66 |
HOISTING; LIFTING; HAULING

|  | B66C |
CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES (rope, cable, or chain winding mechanisms, braking or detent devices therefor Fulltext... Hierarchy... Expanded...B66D; specially adapted for nuclear reactors Fulltext... Hierarchy... Expanded...G21)

|  | B66C |
Subclass index
KINDS OF CRANES |
Trolley cranes | 19/00
Bridge; cable-way; jib | 17/00; 21/00; 23/00
COMMON FEATURES OR DETAILS |
Load-engaging devices | 1/00, 3/00
Supporting structures; runways | 5/00, 6/00; 7/00
Travelling gear; trolleys | 9/00; 11/00
Safety gear | 15/00
Other | 13/00

|  | B66C 1/00 - B66C 3/00 |
Load-engaging elements or devices attached to lifting, lowering, or hauling gear of cranes or adapted for connection therewith

|  | B66C 1/00 - B66C 3/00 |
Note(s) In groups Fulltext... Hierarchy... Expanded...B66C 1/00 or Fulltext... Hierarchy... Expanded...B66C 3/00, the following term is used with the meaning indicated: "cranes" also covers capstans, winches, or tackles.

|  | B66C 1/00 |
Load-engaging elements or devices attached to lifting, lowering, or hauling gear of cranes, or adapted for connection therewith for transmitting forces to articles or groups of articles (fastening to cables or ropes Fulltext... Hierarchy... Expanded...F16G 11/00)

|  | B66C 1/02 |
· | by suction means

|  | B66C 1/04 |
· | by magnetic means

|  | B66C 1/06 |
· · | electromagnetic

|  | B66C 1/08 |
· · · | Circuits therefor (for electromagnets in general Fulltext... Hierarchy... Expanded...H01F 7/18)

|  | B66C 1/10 |
· | by mechanical means

|  | B66C 1/12 |
· · | Slings comprising chains, wires, ropes, or bands; Nets (article side grippers suspended by ropes or chains from crane hooks Fulltext... Hierarchy... Expanded...B66C 1/42)

|  | B66C 1/14 |
· · · | Slings with hooks

|  | B66C 1/16 |
· · · | Slings with load-engaging platforms or frameworks

|  | B66C 1/18 |
· · · | Band-type slings

|  | B66C 1/20 |
· · · | specially adapted for handling vehicles

|  | B66C 1/22 |
· · | Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks

|  | B66C 1/24 |
· · · | Single members engaging the loads from one side only

|  | B66C 1/26 |
· · · · | with means for releasing the loads

|  | B66C 1/28 |
· · · | Duplicate, e.g. pivoted, members engaging the loads from two sides

|  | B66C 1/30 |
· · · · | and also arranged to grip the sides of the loads

|  | B66C 1/32 |
· · · · · | of piled or stacked articles

|  | B66C 1/34 |
· · · | Crane hooks

|  | B66C 1/36 |
· · · · | with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads

|  | B66C 1/38 |
· · · · | adapted for automatic disengagement from loads on release of cable tensions (for parachutes Fulltext... Hierarchy... Expanded...B64D)

|  | B66C 1/40 |
· · · · | formed or fitted with load-measuring or indicating devices

|  | B66C 1/42 |
· · | Gripping members engaging only the external or internal surface of the articles (for handling or stripping castings or ingots during manufacture Fulltext... Hierarchy... Expanded...B22D 29/00)

|  | B66C 1/44 |
· · · | and applying frictional forces

|  | B66C 1/46 |
· · · · | by inflatable elements

|  | B66C 1/48 |
· · · · | to vertical edge portions of sheets, tubes, or like thin or thin-walled articles (internally-expanding grippers Fulltext... Hierarchy... Expanded...B66C 1/54)

|  | B66C 1/54 |
· · · · | Internally-expanding grippers for handling hollow articles (Fulltext... Hierarchy... Expanded...B66C 1/46 takes precedence) [2]

|  | B66C 1/56 |
· · · · · | for handling tubes

|  | B66C 1/58 |
· · · | and deforming the articles, e.g. by using gripping members such as tongs or grapples

|  | B66C 1/59 |
· · · · | Tongs for sacks [3]

|  | B66C 1/62 |
· · | comprising article-engaging members of a shape complementary to that of the articles to be handled

|  | B66C 1/64 |
· · · | for T- or I-section beams or girders

|  | B66C 1/66 |
· · · | for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof

|  | B66C 1/68 |
· | mounted on, or guided by, jibs (jibs Fulltext... Hierarchy... Expanded...B66C 23/64)

|  | B66C 3/00 |
Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs (buckets or other containers Fulltext... Hierarchy... Expanded...B65D, e.g. pallets Fulltext... Hierarchy... Expanded...B65D 19/00; dredges equipped with grabs Fulltext... Hierarchy... Expanded...E02F)

|  | B66C 3/02 |
· | Bucket grabs

|  | B66C 3/04 |
· | Tine grabs

|  | B66C 3/06 |
· | Grabs actuated by a single rope or chain

|  | B66C 3/08 |
· · | and having tipping rings

|  | B66C 3/10 |
· · | and having buckets opening automatically upon the grab being lowered on to the dump of material

|  | B66C 3/12 |
· | Grabs actuated by two or more ropes

|  | B66C 3/14 |
· | Grabs opened or closed by driving motors thereon

|  | B66C 3/16 |
· · | by fluid motors

|  | B66C 3/18 |
· · | by electric motors

|  | B66C 3/20 |
· | mounted on, or guided by, jibs (jibs Fulltext... Hierarchy... Expanded...B66C 23/64)

|  | B66C 5/00 - B66C 15/00 |
Other common features; Details

|  | B66C 5/00 |
Base-supporting structures with legs

|  | B66C 5/02 |
· | Fixed or travelling bridges or gantries, i.e. elongated structures of inverted-L- or of inverted-U-shape

|  | B66C 5/04 |
· · | with runways or tracks supported for movements relative to bridge or gantry

|  | B66C 5/06 |
· · | with runways or tracks supported for lateral swinging movements

|  | B66C 5/08 |
· · | with vertically-inclinable runways or tracks

|  | B66C 5/10 |
· | Portals, i.e. essentially circular or square platforms with three or more legs specially adapted for supporting slewing jib cranes

|  | B66C 6/00 |
Girders, or track-supporting structures, specially adapted for cranes (base-supporting structures with legs Fulltext... Hierarchy... Expanded...B66C 5/00; girders in general Fulltext... Hierarchy... Expanded...E04C 3/02)

|  | B66C 7/00 |
Runways, tracks, or trackways for trolleys or cranes

|  | B66C 7/02 |
· | for underhung trolleys or cranes

|  | B66C 7/04 |
· · | Trackway suspension

|  | B66C 7/06 |
· · · | on supports constructed for easy erection, e.g. transportable

|  | B66C 7/08 |
· | Constructional features of runway rails or rail mountings (of general application Fulltext... Hierarchy... Expanded...E01B)

|  | B66C 7/10 |
· | Arrangements or devices for extending runways or tracks

|  | B66C 7/12 |
· | Devices for changing direction of travel or for transferring from one runway to another; Crossings; Combinations of tracks of different gauges (transfer devices of general application Fulltext... Hierarchy... Expanded...E01B)

|  | B66C 7/14 |
· · | Runway interlocking devices

|  | B66C 7/16 |
· | Devices specially adapted for limiting trolley or crane travel; Arrangements of buffer-stops (buffer-stops of interest apart from this application Fulltext... Hierarchy... Expanded...B61K 7/18; limit-switch arrangements, limit circuits Fulltext... Hierarchy... Expanded...B66D 1/56)

|  | B66C 9/00 |
Travelling gear incorporated in, or fitted to, trolleys or cranes (for dredgers Fulltext... Hierarchy... Expanded...E02F)

|  | B66C 9/02 |
· | for underhung trolleys or cranes

|  | B66C 9/04 |
· | to facilitate negotiation of curves

|  | B66C 9/06 |
· | for more than one rail gauge

|  | B66C 9/08 |
· | Runners; Runner bearings (wheels for railbound vehicles Fulltext... Hierarchy... Expanded...B60B)

|  | B66C 9/10 |
· | Undercarriages or bogies, e.g. end carriages, end bogies

|  | B66C 9/12 |
· · | with load-distributing means for equalising wheel pressure

|  | B66C 9/14 |
· | Trolley or crane travel drives (rope, cable, or chain drives for loads or trolleys Fulltext... Hierarchy... Expanded...B66C 11/16; control Fulltext... Hierarchy... Expanded...B66C 13/18)

|  | B66C 9/16 |
· | with means for maintaining alignment between wheels and track

|  | B66C 9/18 |
· | with means for locking trolleys or cranes to runways or tracks to prevent inadvertent movements

|  | B66C 11/00 |
Trolleys or crabs, e.g. operating above runways (runways, tracks, or trackways therefor Fulltext... Hierarchy... Expanded...B66C 7/00; winch mechanisms Fulltext... Hierarchy... Expanded...B66D)

|  | B66C 11/02 |
· | with operating gear or operator's cabin suspended, or laterally offset, from runway or track

|  | B66C 11/04 |
· · | Underhung trolleys (power-operated hoists with driving motor and drum or barrel contained in a common housing Fulltext... Hierarchy... Expanded...B66D 3/20)

|  | B66C 11/06 |
· · · | running on monorails (overhead railway systems Fulltext... Hierarchy... Expanded...B61B)

|  | B66C 11/08 |
· | with turntables

|  | B66C 11/10 |
· · | equipped with jibs (jib cranes Fulltext... Hierarchy... Expanded...B66C 23/00)

|  | B66C 11/12 |
· | having hoisting gear adapted to special load-engaging elements and not otherwise provided for

|  | B66C 11/14 |
· | adapted to operate on crane or bridge structure of particular configuration, e.g. on reinforced concrete girders of rectangular cross-section

|  | B66C 11/16 |
· | Rope, cable, or chain drives for trolleys; Combinations of such drives with hoisting gear

|  | B66C 11/18 |
· · | comprising endless ropes or cables

|  | B66C 11/20 |
· · | Arrangements, e.g. comprising differential gears, enabling simultaneous or selective operation of travelling and hoisting gear; Arrangements using the same rope or cable for both travelling and hoisting, e.g. in Temperley cranes (power transmissions between driving motors and winch drums Fulltext... Hierarchy... Expanded...B66D 1/14)

|  | B66C 11/22 |
· · | actuated pneumatically or hydraulically

|  | B66C 11/24 |
· · | with means for locating or sustaining the loads or trolleys in predetermined positions; Hay hoists

|  | B66C 11/26 |
· · · | Abutments; Stop blocks; End stops

|  | B66C 13/00 |
Other constructional features or details

|  | B66C 13/02 |
· | Devices for facilitating retrieval of floating objects, e.g. for recovering craft from water (equipment for handling lifeboats or the like Fulltext... Hierarchy... Expanded...B63B 23/00; loading or unloading floating cargo using shipbased equipment Fulltext... Hierarchy... Expanded...B63B 27/36; salvaging, or hauling-out on slipways, waterborne vessels Fulltext... Hierarchy... Expanded...B63C; winding mechanism controls Fulltext... Hierarchy... Expanded...B66D 1/52)

|  | B66C 13/04 |
· | Auxiliary devices for controlling movements of suspended loads, or for preventing cable slack

|  | B66C 13/06 |
· · | for minimising or preventing longitudinal or transverse swinging of loads

|  | B66C 13/08 |
· · | for depositing loads in desired attitudes or positions

|  | B66C 13/10 |
· · | for preventing cable slack (control devices for rope, cable, or chain winding mechanisms, e.g. for controlling tension, Fulltext... Hierarchy... Expanded...B66D 1/40)

|  | B66C 13/12 |
· | Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts or devices (devices of general interest specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material Fulltext... Hierarchy... Expanded...B65H 75/34)

|  | B66C 13/14 |
· · | to load-engaging elements or motors associated therewith

|  | B66C 13/16 |
· | Applications of indicating, registering, or weighing devices (in crane hooks Fulltext... Hierarchy... Expanded...B66C 1/40; in safety gear Fulltext... Hierarchy... Expanded...B66C 15/00; weighing-apparatus Fulltext... Hierarchy... Expanded...G01G; remote indicating in general Fulltext... Hierarchy... Expanded...G08)

|  | B66C 13/18 |
· | Control systems or devices (exclusively for rope, cable, or chain winding mechanisms Fulltext... Hierarchy... Expanded...B66D 1/40)

|  | B66C 13/20 |
· · | for non-electric drives (transmitting control pulses Fulltext... Hierarchy... Expanded...B66C 13/40)

|  | B66C 13/22 |
· · | for electric drives (transmitting control pulses Fulltext... Hierarchy... Expanded...B66C 13/40; systems or devices of general application Fulltext... Hierarchy... Expanded...H02P)

|  | B66C 13/23 |
· · · | Circuits for controlling the lowering of the load

|  | B66C 13/24 |
· · · · | by dc motors

|  | B66C 13/26 |
· · · · | by ac motors

|  | B66C 13/28 |
· · · · · | utilising regenerative braking for controlling descent of heavy loads and having means for preventing rotation of motor in the hoisting direction when load is released

|  | B66C 13/30 |
· · · | Circuits for braking, traversing, or slewing motors

|  | B66C 13/32 |
· · · | for operating grab-bucket hoists by means of one or more electric motors used both for hoisting and lowering the loads and for opening and closing the bucket jaws (other aspects of rope, cable, or chain winding mechanisms specially adapted for actuating grab buckets Fulltext... Hierarchy... Expanded...B66D 1/62)

|  | B66C 13/34 |
· · · · | through differential or planetary gearing

|  | B66C 13/36 |
· · · · | Single-motor-drive control systems

|  | B66C 13/38 |
· · · · | Systems controlling independent motors

|  | B66C 13/40 |
· · | Applications of devices for transmitting control pulses; Applications of remote control devices (control in general Fulltext... Hierarchy... Expanded...G05)

|  | B66C 13/42 |
· · · | Hydraulic transmitters

|  | B66C 13/44 |
· · · | Electrical transmitters

|  | B66C 13/46 |
· · | Position indicators for suspended loads or for crane elements

|  | B66C 13/48 |
· · | Automatic control of crane drives for producing a single or repeated working cycle; Programme control

|  | B66C 13/50 |
· · | Applications of limit circuits or of limit-switch arrangements (for winding mechanisms Fulltext... Hierarchy... Expanded...B66D 1/56)

|  | B66C 13/52 |
· | Details of compartments for driving engines or motors or of operator's stands or cabins

|  | B66C 13/54 |
· · | Operator's stands or cabins

|  | B66C 13/56 |
· · · | Arrangements of handles or pedals

|  | B66C 15/00 |
Safety gear (for rope, cable, or chain winding mechanisms Fulltext... Hierarchy... Expanded...B66D 1/54)

|  | B66C 15/02 |
· | for retaining load-engaging elements in the event of rope or cable breakage

|  | B66C 15/04 |
· | for preventing collisions, e.g. between cranes or trolleys operating on the same track

|  | B66C 15/06 |
· | Arrangements or use of warning devices [2]

|  | B66C 17/00 - B66C 23/00 |
Kinds or types of cranes (adaptations of girders or of track-supporting structures Fulltext... Hierarchy... Expanded...B66C 6/00) [2]

|  | B66C 17/00 |
Overhead travelling cranes comprising one or more substantially-horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports

|  | B66C 17/04 |
· | with lifting beams, e.g. slewable beams, carrying load-engaging elements, e.g. magnets, hooks (constructions of load-engaging elements Fulltext... Hierarchy... Expanded...B66C 1/00, Fulltext... Hierarchy... Expanded...B66C 3/00)

|  | B66C 17/06 |
· | specially adapted for particular purposes, e.g. in foundries, forges; combined with auxiliary apparatus serving particular purposes (Fulltext... Hierarchy... Expanded...B66C 17/04 takes precedence)

|  | B66C 17/08 |
· · | for charging treatment chambers, e.g. furnaces, kilns, ovens (charging furnaces in general Fulltext... Hierarchy... Expanded...F27D 3/00)

|  | B66C 17/10 |
· · | for transporting ladles

|  | B66C 17/12 |
· · | for handling workpieces, e.g. ingots, which require to be supported temporarily within, or withdrawn from, a treatment chamber, e.g. tong cranes, soaking-pit cranes, stripper cranes (for manipulating ingots during forging Fulltext... Hierarchy... Expanded...B66C 17/18; grippers for handling or stripping castings or ingots during manufacture Fulltext... Hierarchy... Expanded...B22D 29/00)

|  | B66C 17/14 |
· · · | Tong cranes with means for moving article-pushers relative to the tongs

|  | B66C 17/16 |
· · · | Tong cranes with means for turning the tongs about a vertical axis

|  | B66C 17/18 |
· · | for manipulating workpieces during forging operations (workpiece manipulators in forging machines Fulltext... Hierarchy... Expanded...B21J 13/10)

|  | B66C 17/20 |
· · | for hoisting or lowering heavy load carriers, e.g. freight containers, railway wagons

|  | B66C 17/22 |
· · | for hoisting or lowering locomotives

|  | B66C 17/24 |
· · | for building ships on slipways

|  | B66C 17/26 |
· · | combined with auxiliary apparatus, e.g. log saws, pushers for unloading vehicles, means for shunting railway vehicles

|  | B66C 19/00 |
Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries (Fulltext... Hierarchy... Expanded...B66C 17/00 takes precedence; base-supporting structures with legs Fulltext... Hierarchy... Expanded...B66C 5/00; jib cranes Fulltext... Hierarchy... Expanded...B66C 23/00)

|  | B66C 19/02 |
· | collapsible

|  | B66C 21/00 |
Cable cranes, i.e. comprising hoisting devices running on aerial cable-ways (rope or cable drives for trolleys, combinations of such drives with hoisting gear Fulltext... Hierarchy... Expanded...B66C 11/16; railway systems Fulltext... Hierarchy... Expanded...B61B; rope or cable winding mechanisms Fulltext... Hierarchy... Expanded...B66D 1/00)

|  | B66C 21/02 |
· | with cable-ways supported on framework swingably connected to ground-engaging elements

|  | B66C 21/04 |
· | with cable-ways supported at one end or both ends on bodily-movable framework, e.g. framework mounted on rail track

|  | B66C 21/06 |
· · | with one end supported on a framework movable in a curved, e.g. circular, path and the other end by a column rotatable around a vertical axis

|  | B66C 21/08 |
· | Sag carriers or rope trolleys, suspended or not, e.g. fixed but offering clearance for travelling gear

|  | B66C 21/10 |
· · | travelling

|  | B66C 23/00 |
Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks, tower cranes (base-supporting structures with legs Fulltext... Hierarchy... Expanded...B66C 5/00)

|  | B66C 23/02 - B66C 23/16 |
Note(s) Group Fulltext... Hierarchy... Expanded...B66C 23/64 takes precedence over groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B66C 23/02-B66C 23/16. [5]

|  | B66C 23/02 |
· | with non-adjustable and non-inclinable jibs mounted solely for slewing movements

|  | B66C 23/04 |
· | with jibs the effective length of which is variable in operation, e.g. longitudinally displaceable, extensible

|  | B66C 23/06 |
· | with jibs mounted for jibbing or luffing movements

|  | B66C 23/08 |
· · | and adapted to move the loads in predetermined paths

|  | B66C 23/10 |
· · · | the paths being substantially horizontal; Level-luffing jib cranes

|  | B66C 23/12 |
· · · · | with means for automatically varying the effective length of the hoisting rope or cable

|  | B66C 23/14 |
· · · · | with means, e.g. pantograph arrangements, for varying jib configuration

|  | B66C 23/16 |
· | with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements

|  | B66C 23/18 |
· | specially adapted for use in particular locations or for particular purposes (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B66C 23/02-B66C 23/16, Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B66C 23/58-B66C 23/88 take precedence) [5]

|  | B66C 23/20 |
· · | with supporting couples provided by walls of buildings or like structures

|  | B66C 23/22 |
· · · | Window cranes, i.e. adapted to be supported in window openings

|  | B66C 23/24 |
· · · | Mobile wall cranes

|  | B66C 23/26 |
· · | for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail (with supporting couples provided by walls or buildings Fulltext... Hierarchy... Expanded...B66C 23/20; mounted on vehicles Fulltext... Hierarchy... Expanded...B66C 23/36) [5]

|  | B66C 23/28 |
· · · | constructed to operate at successively higher levels

|  | B66C 23/30 |
· · · · | with frameworks composed of telescopic elements

|  | B66C 23/32 |
· · · · | Self-hoisting cranes

|  | B66C 23/34 |
· · · | Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes

|  | B66C 23/36 |
· · | mounted on road or rail vehicles; Manually-movable jib cranes for use in workshops; Floating cranes (vehicle or ship aspects Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B60-B63)

|  | B66C 23/38 |
· · · | with separate prime movers for crane and vehicle

|  | B66C 23/40 |
· · · | with a single prime mover for both crane and vehicle

|  | B66C 23/42 |
· · · | with jibs of adjustable configuration, e.g. foldable

|  | B66C 23/44 |
· · · | Jib cranes adapted for attachment to standard vehicles, e.g. agricultural tractors

|  | B66C 23/46 |
· · · | Mobile jib cranes with non-slewable jibs

|  | B66C 23/48 |
· · · | Manually-movable jib cranes for use in workshops

|  | B66C 23/50 |
· · · | mounted on railway vehicles, e.g. breakdown cranes

|  | B66C 23/52 |
· · · | Floating cranes (floating dredgers Fulltext... Hierarchy... Expanded...E02F)

|  | B66C 23/53 |
· · · · | including counterweight or means to compensate for list, trim, or skew of the vessel or platform (counterweights or supports for balancing lifting couples Fulltext... Hierarchy... Expanded...B66C 23/72; equipment to decrease unwanted vessel movements Fulltext... Hierarchy... Expanded...B63B 39/00) [4]

|  | B66C 23/58 |
· | arranged to carry-out a desired sequence of operations automatically, e.g. hoisting followed by luffing and slewing

|  | B66C 23/60 |
· | Derricks [3]

|  | B66C 23/61 |
· · | with slewing force exerted at pivoted end [3]

|  | B66C 23/62 |
· | Constructional features or details (of dredgers Fulltext... Hierarchy... Expanded...E02F)

|  | B66C 23/64 |
· · | Jibs

|  | B66C 23/66 |
· · · | Outer or upper end constructions

|  | B66C 23/68 |
· · · | foldable or otherwise adjustable in configuration (Fulltext... Hierarchy... Expanded...B66C 23/687, Fulltext... Hierarchy... Expanded...B66C 23/70 take precedence) [5]

|  | B66C 23/683 |
· · · · | while in use [5]

|  | B66C 23/687 |
· · · | telescopic [5]

|  | B66C 23/69 |
· · · · | while in use [5]

|  | B66C 23/693 |
· · · · · | extensible by fluid pressure [5]

|  | B66C 23/697 |
· · · · | providing bearing means between sections [5]

|  | B66C 23/70 |
· · · | assembled from separate sections to form jibs of various discrete lengths

|  | B66C 23/72 |
· · | Counterweights or supports for balancing lifting couples

|  | B66C 23/74 |
· · · | separate from jib

|  | B66C 23/76 |
· · · · | and movable to take account of variations of load or of variations of length of jib

|  | B66C 23/78 |
· · · | Supports, e.g. outriggers, for mobile cranes

|  | B66C 23/80 |
· · · · | hydraulically actuated

|  | B66C 23/82 |
· · | Luffing gear

|  | B66C 23/84 |
· · | Slewing gear (anti-friction bearings Fulltext... Hierarchy... Expanded...F16C)

|  | B66C 23/86 |
· · · | hydraulically actuated

|  | B66C 23/88 |
· | Safety gear (for cranes in general Fulltext... Hierarchy... Expanded...B66C 15/00; for rope, cable, or chain winding mechanisms Fulltext... Hierarchy... Expanded...B66D 1/54)

|  | B66C 23/90 |
· · | Devices for indicating or limiting lifting movement

|  | B66C 23/92 |
· · | Snubbers or dash-pots for preventing backwards-swinging of jibs, e.g. in the event of cable or tackle breakage

|  | B66C 23/94 |
· · | for limiting slewing movements