Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7669835 | Closure system, method of use, and devices including closure system A closure system and various exemplary embodiments for devices including the closure system are disclosed. The closure system may include a base, a sideplate configured to rotate with respect to the base, and a retaining mechanism carried by the sideplate and config... | 03/02/2010 |
| 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 |
| 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 |
| 7156775 | Starting block with pedal markings A starting block is used by a runner in a track event. The starting block contains a rail and a pair of foot pedal assemblies, one assembly connected to the left side of the rail and one assembly connected to the right side of the rail. Each foot pedal assembly cont... | 01/02/2007 |
| 6971636 | High speed safety block assembly A high speed safety block assembly includes a first and second cheek plates with a sheave and axle installed between the cheek plates. The cheek plates each have a recessed area on their inner surfaces and have interlocking ears which increase the safety of the bloc... | 12/06/2005 |
| 6651962 | High speed safety block assembly A high speed safety block assembly includes a first and second cheek plates with a sheave and axle installed between the cheek plates. The cheek plates each have a recessed area on their inner surfaces and have interlocking ears which increase the safety ... | 11/25/2003 |
| 6244570 | High speed safety block assembly A high speed safety block assembly includes a first and second cheek plates with a sheave and axle installed between the cheek plates. The cheek plates each have a recessed area on their inner surfaces and have interlocking ears which increase the safety ... | 06/12/2001 |
| 5845894 | Pulley with a pivoting flange and built-in jammer A pulley comprises a pair of flanges, a rotary roller mounted on a first spindle, and a second flange which oscillates on the first spindle. A jammer is incorporated inside the pulley and comprises a pivotable tumbler on a second spindle between an active... | 12/08/1998 |
| 5538224 | Line-handling block comprising two cheeks having bayonet mating interconnection A block for line-handling comprises two cheeks and a rotatable sheave sandwiched between the two cheeks. The two cheeks mate together through a central aperture of the sheave by a relative rotation of the cheeks via a bayonet fitting. The mated cheeks are... | 07/23/1996 |
| 5056760 | T-slot sheave A sheave that has the advantage of being able to be quickly coupled to a le, and quickly decoupled from the cable. A further advantage is that the shaft of the pulley on which the cable rides is journaled at each end in side members that interlock when t... | 10/15/1991 |
| 4690381 | Pulley block assembly for aerial line A pulley block assembly having a pulley block unit for an aerial line, comprising a pulley frame, a pulley rotatably supported by the pulley frame, and an inverting guide roller rotatably supported by the pulley frame opposite to the pulley in the pulley ... | 09/01/1987 |
| 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 |
| 4533026 | Device which can brake and/or stop a load secured to it and which falls, notably an anti-fall safety device A load carrying device, movable along a rope, has a casing formed of two cheeks, a shaft supported on the casing, and a pulley supported on the shaft. Two diverters are disposed on opposite cheeks of the casing so a rope enters the device on one diverter,... | 08/06/1985 |
| 4327897 | Cable guide for powered winch In a military vehicle having a powered winch, the improvement comprising a able guide that includes three rollers having concave edge surfaces guidably engaged with segmental surface areas of the cable. One of the rollers is carried by an auxiliary frame t... | 05/04/1982 |
| 4165830 | Crab pot warp line coiler A crab pot warp line coiler is disclosed utilizing the unique properties of "Crab Lay" type synthetic line. Drawn by the coiler from a pot hauler, the line passes initially around an input guide sheave and thereupon downwardly across a vertical span into ... | 08/28/1979 |
| 4056257 | Hoisting tackle block assembly A hoisting tackle block assembly is described for receiving and accommodating a rope loop without having to thread a free end of the rope through the block housing and over a sheave. The assembly includes a shaft with a sleeve mounted for rotation about t... | 11/01/1977 |
| 4013270 | Combined winch and boom assembly A rigid boom is provided with a cable receiving winch drum and a traction sheave to receive the cable therethrough. The drum is laterally removable from the boom and a latch and split cable guide mechanism on the sheave permits a new drum and cable to be ... | 03/22/1977 |
