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Indent Level
Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
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CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS (winding or unwinding ropes or cables for feeding or storage purposes B65H; rope or cable winding or unwinding mechanisms for lifts B66B)
NOTE
-
This subclass 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


WARNING
-

The following IPC groups are not used in the CPC scheme. Subject matter covered by these groups is classified in the following CPC groups:

B66D1/395 covered by B66D 1/36, B66D 1/50

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Rope, cable, or chain winding mechanisms; Capstans (portable or mobile lifting or hauling appliances B66D 3/00)
.
{
Attaching winches to vehicle wheels
}
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.
Driving gear
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. .
manually operated
. . .
Safety cranks for preventing unwanted crank rotation and subsequent lowering of the loads
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. .
incorporating fluid motors
B66D 1/10
. . .
Steam driving gear
. .
incorporating electric motors
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. .
Power transmissions between power sources and drums or barrels
{
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
}
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. . .
the drums or barrels being freely rotatable
{
e.g. having a clutch activated independently of a brake (B66D 1/20, B66D 1/22, B66D 1/24 take precedence; clutches activated alternately with brakes B66D 1/14, slip couplings B66D 1/14)
}
. . . .
and the power being transmitted from a continuously operating and irreversible prime mover
{
i.e. an internal combustion engine e.g. on a motor vehicle or a portable winch
}
B66D 1/20
. . .
Chain, belt, or friction drives, e.g. incorporating sheaves
{
of fixed or variable ratio
}
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. . .
Planetary or differential gearings (for actuating grab buckets B66D 1/70)
{
i.e. with planet gears having movable axes of rotation
}
. . . .
{
variable ratio or reversing gearing (fixed ratio gearing B66D 1/22)
}
. . .
for varying speed or reversing direction of rotation of drums or barrels
{
i.e. variable ratio or reversing gearing (B66D 1/225 takes precedence)
}
.
having several drums or barrels
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.
Other constructional details
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. .
Rope, cable, or chain drums or barrels
. . .
Attachment of ropes or cables to drums or barrels
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. .
Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
. . .
{
by means of pivotably mounted drums or barrels
}
. . .
by means of guides movable relative to drum or barrel
. . .
by means of axially-movable drums or barrels
{
(pivotably mounted drums or barrel B66D 1/365)
}
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B66D 1/40
. .
Control devices
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. . .
non-automatic
. . . .
pneumatic of hydraulic
. . . .
electric
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. . .
automatic
. . . .
{
electrical
}
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. . . .
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
. . . . .
{
electrical
}
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. . . .
for varying rope or cable tension, e.g. when recovering craft from water
. . . . .
{
electrical
}
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.
Safety gear
. .
Adaptations of limit switches
B66D 1/58
. .
responsive to excess of load
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.
adapted for special purposes
. .
{
scaffolding winshes (B66D 1/74 takes precedence)
}
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. .
for actuating grab buckets (electrical control in cranes B66C 13/32)
. . .
by means of a single rope or chain
. . .
driven by a single motor
. . .
driven by two motors
. . .
driven through planetary or differential gearings
. .
Anchor-chain sprockets; Anchor capstans
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. .
Capstans
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. . .
{
having two or more drums providing tractive force
}
. . . .
{
and having rope storing means
}
. . .
{
Friction drives, e.g. pulleys, having a cable winding angle of less than 360 degrees
}
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B66D 1/7421
. . .
{
having a vertical rotation axis
}
B66D 1/7426
. . . .
{
driven by motor only
}
B66D 1/7431
. . . .
{
driven manually only
}
B66D 1/7436
. . . .
{
drivable by both motor and manually
}
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B66D 1/7442
. . .
{
having a horizontal rotation axis
}
B66D 1/7447
. . . .
{
driven by motor only
}
B66D 1/7452
. . . .
{
driven manually only
}
B66D 1/7457
. . . .
{
drivable by both motor and manually
}
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B66D 1/7463
. . .
{
Accessories
}
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B66D 1/7468
. . . .
{
Handles
}
B66D 1/7473
. . . . .
{
with locking means
}
B66D 1/7478
. . . . .
{
Powered handles
}
B66D 1/7484
. . .
{
Details concerning gearing arrangements, e.g. multi-speed
}
B66D 1/7489
. . .
{
having a particular use, e.g. rope ascenders
}
. . .
{
Self-tailing capstans
}
. . .
having auxiliary drums or barrels for storing the ropes or cables
. . .
for shunting, e.g. in marshalling yards
. .
for scrapers
. .
for slewing and hoisting by means of derricks
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B66D 3/00
Portable or mobile lifting or hauling appliances
.
{
using two or more cooperating endless chains
}
.
{
Power actuated devices operating on ropes, cables, or chains for hauling in a mainly horizontal direction (B66D 3/003 takes precedence)
}
.
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)
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.
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)
. .
{
Block and tackle system with variable number of cable parts
}
. .
{
Openable pulley blocks
}
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. .
with more than one pulley
B66D 3/08
. . .
Arrangements of sheaves
. . .
Applications of braking or detent devices
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B66D 3/12
.
Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable
. .
lever operated
. .
operated by an endless chain passing over a pulley or a sprocket
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.
Power-operated hoists
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. .
with driving motor, e.g. electric motor, and drum or barrel contained in a common housing
. . .
with variable-speed gearings between driving motor and drum or barrel
. .
Applications of limit switches
B66D 3/26
. .
Other details, e.g. housings
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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)
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.
Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
. .
{
Cooling of brakes (in general F16D)
}
. .
{
Fluid-resistance brakes
}
. .
actuated by centrifugal force
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B66D 5/06
. .
with radial effect (B66D 5/20 takes precedence)
. . .
embodying blocks or shoes
. . .
embodying bands
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. .
with axial effect (B66D 5/22 takes precedence)
. . .
embodying discs
. .
for action on ropes or cables
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. .
for generating braking forces which are proportional to the loads suspended; Load-actuated brakes
B66D 5/20
. . .
with radial effect
. . .
with axial effect
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. .
Operating devices
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. . .
pneumatic or hydraulic
B66D 5/28
. . . .
specially adapted for winding gear, e.g. in mining hoists
. . .
electrical
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.
Detent devices
. .
having latches
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B66D 2700/00
Capstans, winches or hoists
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B66D 2700/01
.
Winches, capstans or pivots
B66D 2700/0108
. .
with devices for paying out or automatically tightening the cable
B66D 2700/0116
. .
Manually or spring operated winches
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B66D 2700/0125
. .
Motor operated winches
B66D 2700/0133
. . .
Fluid actuated
B66D 2700/0141
. . .
Electrically actuated
B66D 2700/015
. . .
Actuated by chain, belt or by friction
B66D 2700/0158
. . .
Hydraulically controlled couplings or gearings
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B66D 2700/0166
. . .
Winches with multiple drums or with drums with multiple parts of different diameter
B66D 2700/0175
. . . .
with adjacent drums mounted on a single shaft with a common coupling member
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B66D 2700/0183
. .
Details, e.g. winch drums, cooling, bearings, mounting, base structures, cable guiding or attachment of the cable to the drum
B66D 2700/0191
. . .
Cable guiding during winding or paying out
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B66D 2700/02
.
Hoists or accessories for hoists
B66D 2700/021
. .
Hauling devices
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B66D 2700/023
. .
Hoists
B66D 2700/025
. . .
motor operated
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B66D 2700/026
. .
Pulleys, sheaves, pulley blocks or their mounting
B66D 2700/028
. . .
Pulley blocks with multiple sheaves
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B66D 2700/03
.
Mechanisms with latches or braking devices in general for capstans, hoists or similar devices as well as braking devices actuated electrically or by fluid under pressure
B66D 2700/035
. .
Fluid operated braking devices
B66D 2700/05
.
Brakes with mechanisms with latches for hoists or similar devices
B66D 2700/07
.
Brakes with axial thrust for winches, hoists or similar devices
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013