Manually-operated, e.g. lever-actuated, devices operating on ropes, cables, or chains for hauling in a mainly horizontal direction (B 66 D 3/04, B 66 D 3/12 take precedence)
3
/
04
•
Pulley blocks or like devices in which force is applied to a rope, cable or chain, which passes over one or more pulleys, e.g. to obtain mechanical advantage (sheaves, chain wheels, pulleys F 16 H 55/00) [4]
3
/
06
•
•
with more than one pulley
3
/
08
•
•
•
Arrangements of sheaves
3
/
10
•
•
•
Applications of braking or detent devices
3
/
12
•
Chain or like hand-operated tackles with or without power-transmission gearing between operating member and lifting rope, chain, or cable
3
/
14
•
•
lever-operated
3
/
16
•
•
operated by an endless chain passing over a pulley or a sprocket
3
/
18
•
Power-operated hoists
3
/
20
•
•
with driving motor, e.g. electric motor, and drum or barrel contained in a common housing
3
/
22
•
•
•
with variable-speed gearing between driving motor and drum or barrel
3
/
24
•
•
Applications of limit switches
3
/
26
•
•
Other details, e.g. housings
5
/
00
Braking or detent devices characterised by their application to lifting or hoisting gear, e.g. for controlling the lowering of loads (for pulley blocks B 66 D 3/10)
5
/
02
•
Crane, lift, hoist, or winch brakes operating on drums, barrels, or ropes
