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braking or detent devices characterised by their application for retarding or preventing rotary movement of a winding drum or barrel
Definition statement
This subclass/group covers:

This subclass includes:

Rope, cable or chain winding or unwinding mechanisms for moving all loads except lift cages, e.g. winches for dredges;

IPC group B66D1/395 is not used in the internal ECLA classification scheme. Subject matter covered by this group is classified in the following ECLA groups: B66D 1/36, B66D 1/50

References relevant to classification in this subclass
This subclass/group does not cover:
Lifting arrangements for furniture
Devices for life saving
Winding or unwinding ropes or cables for feeding or storage purposes
Cable winding or unwinding mechanisms for lifts
Winding units specially adapted for drilling operations
Lifting arrangements for lamps
Rope, cable, or chain winding mechanisms; Capstans (portable or mobile lifting or hauling appliances B66D 3/00 )
Definition statement
This subclass/group 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.

References relevant to classification in this group
This subclass/group does not cover:
Portable or mobile lifting or hauling appliances
Special rules of classification within this group

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.

[N: Attaching winches to vehicle wheels]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/005

US 4 742 971

Driving gear
Definition statement
This subclass/group covers:

Drives using for example springs, see for example US 4 009 843

manually operated
Definition statement
This subclass/group covers:

Includes winches which can be driven both manually and powered (also classified in relevant subgroup of B66D 1/08 and B66D 1/12)

see for example US 2010/0133372

References relevant to classification in this group
This subclass/group does not cover:
Drives for capstan winches
Safety cranks for preventing unwanted crank rotation and subsequent lowering of the loads
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/06

US 3 939 729

Safety devices for motor driven winches
incorporating fluid motors
Definition statement
This subclass/group covers:

Driven by either pneumatic or hydraulic motors

see for example US 5 692 735

incorporating electric motors
Definition statement
This subclass/group covers:

Winches with particular motor types or motor drive arrangements

see for example US 2003/0001147

Power transmissions between power sources and drums or barrels [N: including brakes, one-way brakes, one-way clutches, clutches activated alternately with brakes, fixed ratio gearing unless otherwise provided for in B66D 1/16 to B66D 1/24 ]
Definition statement
This subclass/group covers:

Including brakes, one-way brakes, one-way clutches, clutches activated alternately with brakes, fixed ratio gearing unless otherwise provided for in B66D 1/16 to B66D 1/24

the drums or barrels being freely rotatable [N: e.g. having a clutch activated independently of a brake (B66D 1/20, B66D 1/22, B66D1/24 take precedence; clutches activated alternately with brakes B66D 1/14, slip couplings B66D 1/14 )]
Definition statement
This subclass/group covers:

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

References relevant to classification in this group
This subclass/group does not cover:
Clutches activated alternately with brakes or slip couplings
and the power being transmitted from a continuously operating and irreversible prime mover [N: i.e. an internal combustion engine e.g. on a motor vehicle or a portable winch]
Definition statement
This subclass/group covers:

An engine e.g. an internal combustion engine on a motor vehicle or a portable winch

Planetary or differential gearings (for actuating grab buckets B66D 1/70 ) [N: i.e. with planet gears having movable axes of rotation]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/22

US 4 452 429

References relevant to classification in this group
This subclass/group does not cover:
Devices for actuating grab buckets
[N: variable ratio or reversing gearing (fixed ratio gearing B66D 1/22 )]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/225

US 5 842 684

References relevant to classification in this group
This subclass/group does not cover:
Fixed ratio gearing
for varying speed or reversing direction of rotation of drums or barrels [N: i.e. variable ratio or reversing gearing (B66D 1/225 takes precedence)]
References relevant to classification in this group
This subclass/group does not cover:
Variable ratio planetary gearings
having several drums or barrels
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/26

US 3 787 031

Other constructional details
Definition statement
This subclass/group covers:

Including e.g. frame and bearing arrangements;

Subgroups B66D 1/30 to B66D 1/525 take precedence

Rope, cable, or chain drums or barrels
Definition statement
This subclass/group covers:

Including drum construction; cooling;

References relevant to classification in this group
This subclass/group does not cover:
Capstans
Attachment of ropes or cables to drums or barrels
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/34

US 2002/0104918

Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/36

US 2005/0279977

[N: by means of pivotably mounted drums or barrels]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/365

US 4 002 321

by means of guides movable relative to drum or barrel
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/38

US 4 235 394

by means of axially-movable drums or barrels [N: (pivotably mounted drums or barrel B66D 1/365 )]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/39

US 4 087 060

References relevant to classification in this group
This subclass/group does not cover:
Pivotably mounted drums or barrels
non-automatic
Definition statement
This subclass/group covers:

Control devices which do not respond to external conditions

References relevant to classification in this group
This subclass/group does not cover:
Remote controls for crane winches
pneumatic or hydraulic
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/42

US 6 371 447

electric
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/46

US 2008/0099738

automatic
Definition statement
This subclass/group covers:

includes pneumatic and hydraulic control arrangements

US 2005/0143219

[N: electrical]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/485

US 5 818 185

for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control
Definition statement
This subclass/group covers:

Ensures cable tension does not rise above or fall below desired value.

see for example US 7 389 973

References relevant to classification in this group
This subclass/group does not cover:
Slack prevention controls for cranes
[N: electrical]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/505

US 2010/0116191

for varying rope or cable tension, e.g. when recovering craft from water
Definition statement
This subclass/group covers:

Compensates for motion of load

see for example US 7 775 383

References relevant to classification in this group
This subclass/group does not cover:
Swell compensation controls for cranes
[N: electrical]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/525

US 2007/0272906

Safety gear
References relevant to classification in this group
This subclass/group does not cover:
Safety gear for cranes
Adaptations of limit switches
Definition statement
This subclass/group covers:

Responsive to cable length or position

References relevant to classification in this group
This subclass/group does not cover:
Limit switch arrangements for cranes
Limit switch arrangements for portable winches
adapted for special purposes
References relevant to classification in this group
This subclass/group does not cover:
Vehicle mounted winches
[N: scaffolding winches (B66D 1/74 takes precedence)]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/605

US 6 688 582

Relationship between large subject matter areas

Also classified in E04G 3/32

for actuating grab buckets (electrical control in cranes B66C 13/32)
Special rules of classification within this group

This subgroup not used. Documents are classified in B66C 3/06 to B66C 3/125

by means of a single rope or chain
Special rules of classification within this group

This subgroup not used. Documents are classified in B66C 3/06 to B66C 3/125

driven by a single motor
Special rules of classification within this group

This subgroup not used. Documents are classified in B66C 3/06 to B66C 3/125

driven by two motors
Special rules of classification within this group

This subgroup not used. Documents are classified in B66C 3/06 to B66C 3/125

driven through planetary or differential gearings
Special rules of classification within this group

This subgroup not used. Documents are classified in B66C 3/06 to B66C 3/125

Anchor-chain sprockets; Anchor capstans
Relationship between large subject matter areas

Also classified in B63B 21/00

Capstans
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/74

US 2010/0242824

References relevant to classification in this group
This subclass/group does not cover:
Non driven bollards
Drive handles in general
[N: having two or more drums providing tractive force]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/7405

see for example US 4 634 102

[N: and having rope storing means]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/741

US 2010/0262384

[N: Friction drives, e.g. pulleys, having a cable winding angle of less than 360 degrees]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/7415

US 6 070 858

[N: self-tailing capstans]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/7494

US 4 595 173

having auxiliary drums or barrels for storing the ropes or cables
Definition statement
This subclass/group covers:

Includes capstans with drum and capstans with storage compartment

see for example EP 1 985 575

for shunting, e.g. in marshalling yards
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/78

US 3 502 301

for scrapers
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/80

US 3 488 036

Relationship between large subject matter areas

Also classified in E02F 3/46

for slewing and hoisting by means of derricks
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 1/82

DE 24 10 784

Portable or mobile lifting or hauling appliances
[N: using two or more cooperating endless chains]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 3/003

US 7 682 106

[N: Power actuated devices operating on ropes, cables, or chains for hauling in a mainly horizontal direction (B66D 3/003 takes precedence)]
Definition statement
This subclass/group covers:

Also includes similar devices which may be used for lifting.

US 4 615 509

Also includes similar devices which may be used for lifting.

Manually-operated, e.g. lever-actuated, devices operating on ropes, cables, or chains for hauling in a mainly horizontal direction (B66D 3/04, B66D 3/12 take precedence)
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 3/02

US 2003/0085392

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 F16H 55/00 )
Relationship between large subject matter areas

sheaves F16H55/04

[N: Block and tackle system with variable number of cable parts]
Definition statement
This subclass/group covers:

Where the number of active pulleys can be varied e.g. to alter the mechanical advantage.

see for example US 3 794 185

[N: Openable pulley blocks]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 3/04

US 5 249 543

with more than one pulley
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 3/06

US 6 386 516

Applications of braking or detent devices
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 3/10

US 4 934 660

lever operated
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 3/14

US 2002/0153519

operated by an endless chain passing over a pulley or a sprocket
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 3/16

US 3 542 341

Power-operated hoists
Definition statement
This subclass/group covers:

Includes pneumatic load-balancing winches

see for example US 2003/0057408

with driving motor, e.g. electric motor, and drum or barrel contained in a common housing
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 3/20

US 2008/0265810

with variable-speed gearings between driving motor and drum or barrel
Definition statement
This subclass/group covers:

Also includes drives with a single gear ratio.

See for example US 3 971 971

Applications of limit switches
References relevant to classification in this group
This subclass/group does not cover:
Limit switch arrangements for cranes
Limit switch arrangements for large winches
Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads (for pulley blocks B66D 3/10)
Definition statement
This subclass/group covers:

braking or detent devices characterised by their application for retarding or preventing rotary movement of a winding drum or barrel

References relevant to classification in this group
This subclass/group does not cover:
Braking devices operating on lift structures
Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
Definition statement
This subclass/group covers:

Includes regenerative braking and non-specified braking arrangements

[N: Cooling of brakes (in general F16D)]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 5/023

US 2 850 125

References relevant to classification in this group
This subclass/group does not cover:
General brake cooling
[N: Fluid-resistance brakes]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 5/026

US 3 158 231

actuated by centrifugal force
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 5/04

US 6 578 822

embodying blocks or shoes
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 5/08

US 2011/0011682

embodying bands
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 5/10

US 2011/0001102

with axial effect (B66D 5/22 takes precedence)
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 5/12

US 7 857 289

embodying discs
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 5/14

US 2006/0151254

for action on ropes or cables
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 5/16

US 5 228 540

for generating braking forces which are proportional to the loads suspended; Load-actuated brakes
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 5/18

US Re. 36 216

with axial effect
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 5/22

US 5 330 036

Operating devices
Definition statement
This subclass/group covers:

Includes brake testing arrangements; overload protection

see for example US

pneumatic or hydraulic
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 5/26

US 2003/0155184

electrical
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 5/30

US 2009/0260927

Detent devices
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 5/32

see for example US 5 004 177

having latches
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in B66D 5/34

US 2006/0186388

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Last Modified: 10/11/2013