CPC Definition - Subclass B66D
This place covers:
Rope, cable or chain winding or unwinding mechanisms for moving all loads except lift cages, e.g. winches for dredges; braking or detent devices characterised by their application for retarding or preventing rotary movement of a winding drum or barrel
This place does not cover:
This place covers:
Rope, cable or chain winding or unwinding mechanisms for moving all loads except lift cages, e.g. Winches for dredges;
Winches mounted on vehicles.
This place does not cover:
Portable or mobile lifting or hauling appliances |
Documents should be classified in the lowest subgroup possible and only classified in higher groups if none of the subgroups is applicable. If necessary documents should be classified in multiple subgroups. All non-trivial technical features should be classified. Main groups should only be used when no appropriate subgroup exists.
This place covers:
Drives using for example springs, see for example US 4 009 843
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Driven by either pneumatic or hydraulic motors
see for example US 5 692 735
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Winches with particular motor types or motor drive arrangements
see for example US 2003/0001147
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E.g. having a clutch activated independently of a brake (B66D 1/20, B66D 1/22, B66D 1/24 take precedence)
see for example US 7 891 641
This place does not cover:
Clutches activated alternately with brakes or slip couplings |
This place covers:
An engine e.g. an internal combustion engine on a motor vehicle or a portable winch
This place does not cover:
Devices for actuating grab buckets |
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Fixed ratio gearing |
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Variable ratio planetary gearings |
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Including e.g. frame and bearing arrangements;
Subgroups B66D 1/30 - B66D 1/525 take precedence
This place does not cover:
Pivotably mounted drums or barrels |
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Control devices which do not respond to external conditions
This place does not cover:
Remote controls for crane winches |
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includes pneumatic and hydraulic control arrangements
US 2005/0143219
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Ensures cable tension does not rise above or fall below desired value.
see for example US 7 389 973
This place does not cover:
Slack prevention controls for cranes |
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Compensates for motion of load
see for example US 7 775 383
This place does not cover:
Swell compensation controls for cranes |
This place does not cover:
Safety gear for cranes |
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Responsive to cable length or position
This place does not cover:
Limit switch arrangements for portable winches | |
Limit switch arrangements for cranes |
This subgroup not used. Documents are classified in B66C 3/06 - B66C 3/125
This subgroup not used. Documents are classified in B66C 3/06 - B66C 3/125
This subgroup not used. Documents are classified in B66C 3/06 - B66C 3/125
This subgroup not used. Documents are classified in B66C 3/06 - B66C 3/125
This subgroup not used. Documents are classified in B66C 3/06 - B66C 3/125
Also classified in B63B 21/00
This place does not cover:
Non driven bollards | |
Drive handles in general |
This place covers:
Illustrative example of subject matter classified in B66D 1/7405
see for example US 4 634 102
This place covers:
Includes capstans with drum and capstans with storage compartment
see for example EP 1 985 575
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Also includes similar devices which may be used for lifting.
US 4 615 509
Also includes similar devices which may be used for lifting.
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Where the number of active pulleys can be varied e.g. to alter the mechanical advantage.
see for example US 3 794 185
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Includes pneumatic load-balancing winches
see for example US 2003/0057408
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Also includes drives with a single gear ratio.
See for example US 3 971 971
This place does not cover:
Limit switch arrangements for large winches | |
Limit switch arrangements for cranes |
This place covers:
braking or detent devices characterised by their application for retarding or preventing rotary movement of a winding drum or barrel
This place does not cover:
Braking devices operating on lift structures |
This place covers:
Includes regenerative braking and non-specified braking arrangements
This place does not cover:
General brake cooling |
This place covers:
Includes brake testing arrangements; overload protection
see for example US