Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7533870 | Pulley A pulley comprises a pulley frame having two sides. A pulley wheel is located between the two sides. The pulley wheel is rotatably supported by the pulley frame. At least one of the sides is mounted for movement away from the pulley wheel to provide a gap between th... | 05/19/2009 |
| 7431269 | Ring sheave The present invention is a sheave assembly that includes a ring supported by a support assembly instead of a solid sheave wheel supported by a central axle. The support assembly may include a plurality of rollers or a curved shoe. The ring is made of a lubricated pl... | 10/07/2008 |
| 7347411 | Splaying snatch block A snatch block for facilitating the movement of loads in loading or unloading operations includes a sheave, two side sections and a top section. The top section is releasably coupled to at least one of the side sections and pivotable with respect to at least one of ... | 03/25/2008 |
| 7222840 | Rope-guiding device A rope-guide device suitable for marine use as a crab-pot puller, an anchor puller, a shrimp-pot hauler, and the like includes an arcuate, side-entry slot running the entire vertical length of its cylindrical body. A unique lock-mechanism prevents rope slippage by c... | 05/29/2007 |
| 7168687 | Snatch block, snatch block assembly and method of use Various exemplary embodiments for snatch block and snatch block assemblies are disclosed. A snatch block having a sideplate that is pivotable, enabling a bight of rope, cable, or chain to be inserted is disclosed. The pivotable sideplate may be engaged with a retain... | 01/30/2007 |
| 7152847 | Pulley block A pulley block has a body which rotatably supports a sheave, the block having a mounting pin which extends through a bore in the block. The pin has an enlarged head disposed internally of the body to retain the pin in the bore. Rotation of the pin may be prevented b... | 12/26/2006 |
| 6974125 | Pulley block A line-handling block particularly for sailing vessels has an attachment device (30) rotatably mounted in the body. Locking device (50) are slidable in keyhole slots (60) into or out of engagement with the attachment device (30). When in ... | 12/13/2005 |
| 6907934 | Universal top-drive wireline entry system bracket and method A bracket and tension rod device is mounted to a top-drive dolly to carry the weight of a sheave wheel assembly. The device is deployed by connecting the sheave wheel assembly to a rigid dolly arm with an adjustable tension rod to relieve a gooseneck from adverse te... | 06/21/2005 |
| 6814327 | Support for holding and securing vacuum and pressure hoses associated with a carpet cleaning system A method and apparatus for securing a vacuum hose and a pressure hose of a carpet cleaning system to a support. In one embodiment, the support is secured to a railing structure of a building or dwelling. The vacuum hose and pressure hose are extended from a base uni... | 11/09/2004 |
| 6742770 | Fail-safe device for raising/lowering articles A failsafe device for raising/lowering articles includes a frame and a fastener for attaching the frame to a ceiling or wall to elevated an article above the floor. A pulley or sheave is mounted on the frame about a substantially horizontal axis when the frame is mo... | 06/01/2004 |
| 6684805 | Rope loop connection system for yachts A connection system for Yachts comprising a lightweight rope loop (2) and a body part for connecting sheets, sails and blocks. A tensile connecting device comprises a high strength fiber rope with a first enlarged terminated end that is held captive in a ... | 02/03/2004 |
| 6481695 | Snatch block hook bolt assembly The present invention relates to an improvement in the construction of a snatch block hook bolt assembly which supports the trunnion or becket to which a hook may be attached. A snatch block having a first fixed side plate having a first aperture and a se... | 11/19/2002 |
| 6386516 | Sheave block with retractable sheave guards A sheave block for use with a wireline includes first and second opposing walls and a shaft extending therebetween. At least one grooved sheave is disposed on the shaft, each sheave being engageable with the wireline. At least one retractable sheave guard... | 05/14/2002 |
| 6263999 | Removable vertical fall arrest device A vertical fall arrest device that combines, in a single unit, a fall arrest function, the capability to automatically traverse intermediate supports provided along a safety line and ease of attachment and detachment from the safety line at any point thro... | 07/24/2001 |
| 6234454 | Failsafe device for raising/lowering articles A failsafe device for raising/lowering articles includes a frame and a fastener for attaching the frame to a ceiling or wall to elevate an article above the floor. A pulley or sheave is mounted on the frame about a substantially horizontal axis when the f... | 05/22/2001 |
| 6138992 | Winch pulley attachable to a motor vehicle-mounted box hitch A winch pulley accessory for directing the pull of a vehicle-mounted winch to move a motor vehicle in any desired direction. The pulley accessory comprises an elongated tubular member and a pulley block. The tubular member slides into a box hitch mounted ... | 10/31/2000 |
| 6105939 | Stuffing box sheave assembly with retention pad A stuffing box sheave assembly includes a brace having a tubular collar positioned at one end and a pair of spaced apart forked arms outwardly projecting from the opposing end. A nylon wheel is rotatably mounted between the forked arms. The wheel has an a... | 08/22/2000 |
| 5626168 | Double roller elements for jacquard machines The double roller elements for Jacquard machines are produced as one piece plastic carcasses each comprising a central body (60) with end plates (64, 66) integrally hinged thereto. The body has hollow spindles (88) to receive the rollers, (94) and once th... | 05/06/1997 |
| 5249543 | Snatch block A snatch block which may be opened to receive a line has a sheave assembly and a pair of sideplates on the sides of the sheave assembly, as well as a head connecting the sideplates. One of the sideplates and sheave is hinged from the head and can pivot to... | 10/05/1993 |
| 5201496 | Line releasing pulley system A line releasing pulley system suitable for the remote conveyance of an article, such as an improvised explosive device, along a complex path, involving many direction changes. The pulley system comprises a pulley frame having a pivoting cheek plate that ... | 04/13/1993 |
| 5139206 | Wire prefeeder A wire prefeeder has a tower standing on a base. A horizontal upper shaft is mounted fixedly to the upper end of the tower and a plurality of pulleys are on the shaft. A carriage is adapted to in the tower and another horizontal lower shaft which has a pl... | 08/18/1992 |
| 4708321 | Multiple sheave assembly with angled rollers Disclosed is a sheave assembly for supporting a downward extending cable wherein a plurality of rollers are disposed upward and outward in a staggered manner from a plane defined by a downward facing arcuate path along which the cable approximately passes... | 11/24/1987 |
| 4676484 | Helicopter transportable traveling block A helicopter transportable traveling block having means for ready assembly and disassembly into component portions of preselected maximum weight, the traveling block being formed into two sub-assemblies, each having an inner and outer plate with a shaft t... | 06/30/1987 |
| 4632364 | Bundle conductor stringing block gate An improved line stringing block utilizes a double gate mechanism to transfer a lead line from the exterior of the block frame to the interior of the block frame. An outer gate is held open until the line is received within a passageway in the block frame... | 12/30/1986 |
| 4614332 | Snatch block with improved hook bolt assembly This concerns a snatch block for free stringing rope to a sheave supported between two side plates, one of which is movable. One of the side plates, called a swing plate, is rotatable with respect to the sheave. A removable bolt holds the two side plates ... | 09/30/1986 |
| 4549723 | Cable block device A cable block device which is capable of clamping upon a strand of any conventional diameter and which is capable of retaining a cable or cables of any conventional diameter. The cable block device includes a bracket which hooks over a strand to support t... | 10/29/1985 |
| 4542884 | Removable double action rope grip A rope grip which comprises a shell (12) and a plate (16) defining a first gripping surface and a cylinder (20) defining a second gripping surface is disclosed. The two surfaces are in a facing spaced relationship and define a passage (30) for receiving a... | 09/24/1985 |
| 4371147 | Vehicle mountable cable reel apparatus A truck mounted hydraulic cable reel apparatus for heavy power cable includes bed frame members supporting a circular turntable. A motor rotates the turntable 45° to either side of a longitudinal center line. Two vertical stanchions are mounted on the tu... | 02/01/1983 |
| 4325537 | Snatch block A novel snatch block particularly suitable for marine use and for movement on a boat deck mounted track, comprising a track slide portion and an upper sheave assembly. The sheave assembly comprises a pair of normally spaced-apart side cheeks; a sheave pin... | 04/20/1982 |
| 4301994 | Bundle conductor stringing block An improved bundle conductor stringing block having a main frame constructed essentially of structural steel components and including a cantilever suspension yoke positioned to form a tow-line receiving passage through which a helicopter can dispense a co... | 11/24/1981 |
| 4201369 | Pulley arrangement for the laying out of electrical leads in a bundle fashion A pulley arrangement for the laying out of electrical leads in a bundle fashion is disclosed. The arrangement comprises a pulley supporting framework having a suspension hook and at least one wheel in said framework. The arrangement further includes two t... | 05/06/1980 |
| 3976210 | Anti-tipping log skidder A log skidder has a pair of upper and lower rollers mounted rearwardly of a towing winch to receive a cable therefrom. In normal operation, the cable is solely guided over the upper roller whereas during the ascent of a steep grade, for example, the cable... | 08/24/1976 |
