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7469881 |
Hoist with detachable power and control unit
A hoist is powered by a separate power unit. The hoist unit includes: a motor, a mounting connector, a spool, webbing, auto cut-off and a first portion of a mating electrical connector. The control...
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7410150 |
Winch safety switch for a hoist
An improved hoist for raising and lowering a weighted object secured to a hoist cable, wherein the improvement comprises a safety switch in series with an up-down switch of the hoist. The safety...
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7311297 |
Electric powered lift with load control
A lifting device utilizing a utility winch having an electric motor and cable drum. The cable on the cable drum extends around a pulley located on a load cell beam. Excessive loads will deflect the...
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7309059 |
Hoist apparatus rope sensing device
A hoist apparatus ( 10 ) including a rope sensing device ( 14 ) for detecting rope fouling events. The rope sensing device ( 14 ) includes a lever arm ( 74 ) having a first end portion ( 74 g ), a...
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7090200 |
Actuator
An actuator and control algorithm which provide an operator with the ability to intuitively and responsively maneuver heavy work-pieces with ease and precision. The structure of the apparatus may...
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6523806 |
Winch mount
In order to increase winch safety, power and utility method for using a winch and a method for mounting a winch based on ensuring that the force exerted by the winch cable on the drum rotation axis...
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6142448 |
Belt hoist
To prevent a random coil of and an overwind of a belt with simple structure, a belt hoist includes a random coil preventing member pressed against the belt wound around a winding member to prevent...
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6003843 |
Belt hoist
To prevent a random coil of and an overwind of a belt with simple structure, a belt hoist includes a random coil preventing member pressed against the belt wound around a winding member to prevent...
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5664765 |
Apparatus and method for pulling cable
A primary device placed at the upstream end of a duct and a relay device placed at an access point pull a cable through respective duct segments. The pulling speed of the primary device is...
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4928925 |
Constant tension hoisting member
A constant tension hoisting system is provided for raising and lowering an object between a platform and a surface undergoing vertical motion relative to the platform, such as raising and lowering...
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4756188 |
Method and apparatus for compensating for drilling line stretch in determining equipment depth in a well and for measurement of hookload on the traveling block of a drilling rig
An arrangement for measuring the stretch of a wire line used in well drilling operations by first measuring the amount of stretch in the deadline by measuring rotation of the dead sheave which...
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4624450 |
Constant tension hoisting system
A constant tension hoisting system is provided for raising and lowering an object between a platform and a surface undergoing vertical motion relative to the platform, such as raising and lowering...
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4420122 |
Lighting device suspending system
A telescopically extendable hanging mechanism for suspending a lighting device has a driving mechanism provided with wires for controlling extension of the hanging mechanism. A wire take-up means...
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4359207 |
Emergency stop mechanism for the payload of a lifting mechanism
An emergency stop mechanism for a lifting device capable of moving a load along a predetermined path against and with the force of gravity using a primary cable. The emergency stop mechanism...
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4334670 |
Anchor winch equipment
Anchor winch equipment, for a motor boat, a yacht or a small-sized fishing boat, which ensures easy and simple paying out and hauling in of an anchor and whose power is supplied from a battery or a...
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4294429 |
Pulley assembly for improving the cooperation between a winch and a cable actuated thereby
In this cable hoisting apparatus at least two pulleys disposed in a common plane have in the one a semi-circular-sectioned groove and in the other a V-shaped groove section, the first pulley...
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4226405 |
Mechanical safety device for a winch
The invention relates to a safety device for winch-type apparatus for moving loads. Two longitudinal elements containing a winch between them are connected by a first transverse element on which...
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4147330 |
Method for setting down or taking up a load from or upon a loading location by means of a crane and an apparatus for carrying out the method
In a method and an apparatus for putting down or taking up a load from or upon a loading location by way of a crane, wherein the crane or the loading location is subjected to substantially...
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3994476 |
Automatic braking arrangement for a windlass
A hoist is described which includes a windlass for taking up and paying out a line which operates a block and tackle. The windlass is provided with a brake which is arranged to operate...
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3934517 |
Cable connection with slack cable-brake release for an aerial cableway
A cable connection with slack cable-brake release for an aerial cableway, wherein a traction cable and possibly a counter cable are secured to the travelling mechanism or carriage of the aerial...
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3899143 |
Tension control device
Disclosed is a tension control device for spooled filamentary material which includes a support structure, a spool support for the filamentary material rotatably carried by the support structure,...
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3887038 |
Lift apparatus
An elevator having a carriage moving up and down a track attached to an upright structure. A winch mounted on the structure adjacent one side of the track is connected to a cable trained over an...
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3860109 |
CABLE-DRIVEN TRANSMISSION FOR FREE STALL BARN CLEANERS
A cable-driven transmission for a barn cleaner as used to clean a free stall barn incorporating tightener arms on the incoming and outgoing branches of the cable wrapped around a drive sheave to...
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3391906 |
Hoisting apparatus with a swingable boom and tackle, in particular for the building industry
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3292906 |
Fishing reel assembly
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3182961 |
Combined fleet angle compensator and braking apparatus
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3095183 |
Braking apparatus and slack line control device
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3076635 |
Well-logging control system for regulating the tension in a drill line
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3043566 |
Control apparatus for power-operated cables
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3032321 |
Control devices for powered winches
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2839021 |
Automatic tension system for fueling at sea
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2809518 |
Line tensiometer
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2698949 |
Boat lowering device
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2663386 |
Automatic brake release
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2462972 |
Slack controlling device for cables
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2445228 |
Pull cable control
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2327505 |
Automatic drilling control
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2254910 |
Safety hoist
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2131868 |
Well measuring
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2117078 |
Drilling control mechanism
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2077084 |
Car loading device
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1941158 |
Automatic brake for windlasses
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1784154 |
Drilling apparatus
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1779656 |
Automatic brake regulator for rotary drilling
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1716025 |
Emergency stop mechanism for hoists
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1431710 |
Tie puller
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1375227 |
Safety mechanism for elevators
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1024085 |
Title is not available
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0998436 |
Title is not available
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0896038 |
Title is not available
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