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| Number | Title | Issue Date |
| 7766307 | Cable handling device A cable handling device for use in the deployment and/or retrieval of a cable comprises a drum which provides mounting for a number of grooved rings, the rings receiving a cable thereabout. The drum forms an inner bearing race with each ring forming an outer bearing... | 08/03/2010 |
| 7226042 | Winch and winch drum Disclosed is a winch drum for rotation about a rotation axis. The winch drum has a rope-receiving surface with a plurality of raised ridges defining substantially helical channels between them. The channels provide guidance for rope along the rope-receiving surface ... | 06/05/2007 |
| 6691960 | Stand The invention relates to a stand having a support arm (2) and a balance weight (AG), which, via at least one cable pull (24d,f), ensures the weight compensation of the load (G), at least a second cable pull (24f) and/or at least a safety cable (324) and p... | 02/17/2004 |
| 6641117 | Apparatus for ascertaining a cable motion for a hoist, in particular a pneumatically operated cable balancing hoist Apparatus for slip-free determination of a cable motion in longitudinal cable direction for a hoist, in particular a pneumatically operated cable balancing hoist, which includes a housing, and a cable drum having an outer surface area formed with a groove... | 11/04/2003 |
| 6513792 | Rope deflection and suitable synthetic fiber rope and their use In a rope deflection, such as preferably a traction sheave drive for an elevator, the diameter at the rope contacting surface and the lay length of a synthetic fiber rope passing over it are related to each other in such a way that within the angle of wra... | 02/04/2003 |
| 6471190 | Reel assembly A capstan winch includes a reel assembly comprising a reel, which rotates, and two generally annular floating flanges which are supported so that the planes in which they rotate converge toward one another, which has the effect of creating an apparent axi... | 10/29/2002 |
| 6401871 | Tension member for an elevator A tension member for an elevator system has an aspect ratio of greater than one, where aspect ratio is defined as the ratio of tension member width w to thickness t (w/t). The increase in aspect ratio results in a reduction in the maximum rope pressure an... | 06/11/2002 |
| 6394421 | Windlass assembly A windlass assembly includes a single-turn gypsy for engaging the line and/or chain of an anchor rode of a water craft. This has to be driven from a drive shaft, but also has to have the capacity to rotate relative to the shaft under the influence of the ... | 05/28/2002 |
| 6386324 | Elevator traction sheave A tension member for an elevator system has an aspect ratio of greater than one, where aspect ratio is defined as the ratio of tension member width w to thickness t (w/t). The increase in aspect ratio results in a reduction in the maximum rope pressure an... | 05/14/2002 |
| 6371448 | Rope drive element for driving synthetic fiber ropes A traction sheave for driving synthetic fiber ropes, preferably of an elevator installation, ensures a consistently good selected tractive capacity that is largely independent of external influences which reduce friction. At least part of the rope running... | 04/16/2002 |
| 6302309 | Forwarding a rod for use in welding by high pressure injection A feeding device is provided for forwarding a pliable thermoplastic rod into a heated pressure chamber for extrusion through an outlet nozzle to effect thermoplastic welding. The device includes a block with a machined channel through the block including ... | 10/16/2001 |
| 6237502 | Sheave arrangement suitable for slack pulling carriage A sheave arrangement having a driving drum and a tension wheel. The driving drum includes a circumferential groove that has two side walls disposed at an angle, alpha. A line preferably is placed between the drum and tension wheel such that a substantiall... | 05/29/2001 |
| 6149133 | Ratchet pulley for tightening cords or ropes A ratchet-type tensioning mechanism for a rope or cord has a rotatable sheave with faces having improved outwardly extending serrations which include alternating primary and secondary projections. The secondary projections are located in valleys between p... | 11/21/2000 |
| 6073917 | Capstan guide ramp coupling structure and method A guide structure for guiding rope into turns of a helically wound arrangement of the rope upon a generally cylindrical capstan rotating to receive helical turns of the rope thereon, includes a helically ramped guide surface upon which the rope travels in... | 06/13/2000 |
| 6027103 | Powerhead assembly and hoisting system An electrically powered hoisting system is operated by seating a line attached to the load to be hoisted in a groove formed between two sheave components and activating the electrical drive motor to rotate the sheave assembly. Voltage for the electrical d... | 02/22/2000 |
| 6019353 | Winch having a multiple diameter drum A winch has two portions of respectively different diameters. A ridge between them permits line to be flipped from the larger diameter portion to the other. Surface treatments of the two portions may be different, with that on the larger diameter portion ... | 02/01/2000 |
| 5957433 | Belt hoist including a winding member with an improved belt fixing surface A belt hoist for allowing fixture of a belt to a winding member to be strengthened to improve the reliability, with a simple structure. The winding member around which the belt is wound includes a shaft insertion bore at the center thereof; a belt fixing ... | 09/28/1999 |
| 5947451 | Marine winch drum The present invention comprises an improved marine winch drum having a plurality of grooves of a specific geometry formed in the spool of the drum to increase the holding power of the drum with respect to the line received thereon and to minimize damage t... | 09/07/1999 |
| 5927690 | Push-pull chain drive door operator system A push-pull chain garage door operator system includes a drive module and an elongated guide rail for a push-pull chain connected to a carriage assembly mounted on the guide rail. The chain is engaged with a sprocket mounted on a generally rectangular pla... | 07/27/1999 |
| 5829736 | Winch having drum of two diameters for alternative engagement by a line at two speeds A sailboat winch used for trimming lines of alternate sails, such as a jib and a spinnaker, has a drum with upper and lower drum portions of different diameters separated by a continuous radially projecting lip. The upper drum portion has a first diameter... | 11/03/1998 |
| 5779226 | Anchoring system A composite storage winch for use in the deployment and retrieval of anchor systems employed with motive offshore drilling platforms. The stowage winch includes: i) a pair or spaced apart pedestals on the drilling platform; ii) a drive shaft journaled in ... | 07/14/1998 |
| 5593140 | Winch having a housing with a smooth-surfaced central portion A winch comprising a substantially cylindrical housing, rotatably disposed around a central shaft, which housing comprises, at the top thereof, a flange and has a central portion of a diameter smaller than the diameter of the flange and the diameter of th... | 01/14/1997 |
| 5346181 | Hauling sheave with cleats A hauling block 20 having a sheave 30 comprising two identical halves 32 and 34. The hauling surfaces 40 and 42 of the sheave 30 carry outwardly extending, cleat receiving pockets 54. Reinforced cleats 50 are seated in the pockets 54 and releasably fasten... | 09/13/1994 |
| 5072840 | Medical bed apparatus A medical bed apparatus is provided that has a body frame, a hoisting assembly and a hammock supported from the hoisting assembly by hanging strings. The body frame is positioned over a hospital bed or the like and a person is placed on the hammock. A pai... | 12/17/1991 |
| 5062241 | Varying radius helical cable spool for powered vehicle door systems An improved cable spool arrangement is disclosed for use in powered vehicle door operating systems, or in other cable-actuated devices, having one or more actuating cables. In one form of the invention, a groove, or other open channel-like opening, is for... | 11/05/1991 |
| 4911373 | Toroidal winch A winch having a torodially-shaped drum with an axis of rotation and at least one cable wound on the drum having a cable length extending from the drum parallel to and substantially equally spaced from said axis at all times during rotation of the winch. ... | 03/27/1990 |
| 4899988 | Fiber optic cable placing equipment The cable puller employs a conically tapered capstan and self-contained motor both carried on a readily collapsible and portable frame. The puller is adapted for placing inside of a manhole where the capstan is aligned with the duct through which the cabl... | 02/13/1990 |
| 4828225 | Power cable retriever An apparatus is provided for use at an airport for drawing in and paying out an electric cable, which reliably grips the cable even when it is covered with a slippery anti-freeze fluid used at airports. The apparatus includes a motor-driven traction wheel... | 05/09/1989 |
| 4760622 | Compound winding apparatus and counterbalance systems A compound counterbalance system for window sashes and the like, comprising: a biasing mechanism for easing operation of a window sash and the like, the biasing mechanism being movable at an inherently variable of force; a first biasing force transmission... | 08/02/1988 |
| 4706940 | Rope hoist apparatus Rope hoist apparatus comprising a single driven drive pulley (15) in which the rope (11) is pressed by a spring-loaded lever (32) by two pressure rollers (29 and 30) into the rope groove (19). The pressure rollers (29 and 30) are so arranged that the rope... | 11/17/1987 |
| 4688765 | Positive grip winch The present invention is an improved winch drum design which improves the gripping action of the drum on a rope by departing from the traditional belt-pulley theory. The winch drum has a series of depressions at spaced intervals around the circumference o... | 08/25/1987 |
| 4666128 | Single head capstan winch A single head capstan winch comprises a capstan head which is movably arranged on a supporting frame for being guided relative to a pressing roller and is also rotatably arranged on this supporting frame and provided with a dynamically balanced surface of... | 05/19/1987 |
| 4657202 | Tension take-up system for drums and the like A tension take-up system for cable support drums and the like features resilient tension absorbing rollers disposed laterally across the winding surface of the drum. The rollers are partially seated into recessed areas defined longitudinally across the wi... | 04/14/1987 |
| 4655433 | Riser tensioning system A tensioner (10) is disclosed for use in tensioning connecting lines (16) connecting a marine riser (14) to a floating platform (12). The tensioner (10) is a passive system which incorporates a series of cylindrical elastomeric members (42, 54, 60) which ... | 04/07/1987 |
| 4644694 | Winding device for cables A winding device for cables which is used to wind cables round take-up drums along grooves provided on the outer circumferences thereof, said grooves formed such that the cables will not cause chafing against the side walls of the grooves, so that no unus... | 02/24/1987 |
| 4575050 | Mobile cable winch In a portable cable winch the smooth shell of a motor-driven cable drum is provided with at least one conical surface having an angle of inclination corresponding to the angle of friction between the load-bearing cable and the cable drum. A clamping disk ... | 03/11/1986 |
| 4345741 | Driving pulley mechanism The mechanism comprises at least one driving pulley comprising of two parts which are each provided with one part of a cable groove, which groove has a relatively great output transmission capacity. The parts are pressed toward each other by pressing devi... | 08/24/1982 |
| 4315617 | Line haulers In a powered V-sheave hauling system, purposively spaced enlargements on the line permit automatic disengagement of line and sheave when any desired point on the line reaches the sheave. The line is then held from running backwards under its load. The inv... | 02/16/1982 |
| 4114874 | Appliance for swimmers A housing and a spool supported within the housing for rotation therein. A rope or like tension member wound on the spool and having at its free end a harness for engaging a swimmer's waist. A brake disc within the housing and a ratchet and pawl mechanism... | 09/19/1978 |
| 4109798 | Crane having overload release means A crane having a hoist winch with a hoist cable connected to a link which parts at a predetermined tension, and a jib over which the hoist cable is reeved for connection to a load. A derricking system on the crane includes a derricking winch and a derrick... | 08/29/1978 |
