Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7338382 | Extendable vehicle steering shaft In a telescopic shaft for vehicle steering, assembled in a steering shaft of a vehicle and including a male shaft and a female shaft so fitted as to be mutually incapable of rotating but mutually slidable, at least one set of torque transmission members are disposed... | 03/04/2008 |
| 7174803 | Steering shaft for motor vehicles A steering shaft for motor vehicles which comprises an inner and an outer shaft part. Each shaft part has a polygonal cross section. The shaft parts engage one another in telescoping fashion and are positively connected to one another by barrel-shaped rolls that are... | 02/13/2007 |
| 6969199 | Floating bearing The invention relates to a movable bearing for a slide (9) guided on two shafts (4), with a linear bearing (3) guided on one of the shafts (4) and a bearing housing(2) that accommodates the linear bearing (3) and is connecte... | 11/29/2005 |
| 6752532 | Positioning device with a solid cylindrical pin A guide apparatus (1) slidably supports a shaft member (2) and a column (3) relative to each other. The column (3) has a through hole (3a) formed therein and the shaft member (2) penetrates the through hole (3 | 06/22/2004 |
| 6568853 | Guide device for relative movement between ram and column formed of splittable members A guide device includes a shaft member and a column. The column has a through hole formed therein and the shaft member penetrates the through hole of the column. A plurality of pockets are formed on an inner circumferential surface of the through hole of ... | 05/27/2003 |
| 6550970 | Linear bearing A linear bearing that can be used in applications requiring high rigidity, such as guide posts of presses and molds is composed of a guide shaft, an outer cylinder capable of moving in the axial direction relatively to the guide shaft outside the guide sh... | 04/22/2003 |
| 6444065 | Method of making rotatable rolls of plastic material Rotatable plastic rollers are produced by either injecting between a roller shaft and an outer running roller layer a thermoplastic material which, during cooling down, shrinks toward the roller shaft and away from the outer running roller layer on accoun... | 09/03/2002 |
| 6203201 | Linear bearing A linear bearing is provided which can allow a shaft to relatively reciprocally move with respect to an outer race in the axial direction, and also to rotate in the circumferential direction. In the linear bearing of the invention, an outer race supports ... | 03/20/2001 |
| 5489253 | Linear bearing for heavy load use The inner surface of an outer cylinder is made an outer cylinder raceway having a simple circular sectional configuration having a radius of curvature. On the outer circumference of an inner cylinder, a plurality of grooves having the radius of curvatures... | 02/06/1996 |
| 4966257 | Shock absorbing or oscillation damper device A shock absorber comprises a tube with a cavity therein and a piston rod extending through one end of the tube. At this end of the tube there is provided a gasket. Moreover, for guiding the piston rod, there are provided guiding rollers. These guiding rol... | 10/30/1990 |
| 4925164 | Coil spring with guide rollers A coil spring has a series of short length plastic rollers received on the spring coils so that the rollers engage either a cylinder wall in which the spring works or a rod received through the spring, or both. The rollers act as roller bearings to preven... | 05/15/1990 |
| 4884898 | Linear motion pillow block including fine tuning features This patent relates to pillow blocks, which are constructed to include one or more roller bearings disposed in tangential relation to the primary shaft at one or more positions around its periphery. Each roller bearing is mounted to rotate about its own s... | 12/05/1989 |
| 4715730 | Linear motion pillow blocks including self-aligning features This patent relates to roller bearing self-aligning pillow blocks, which are constructed to include one or more sealed roller bearings disposed in tangential relation to the primary shaft at one or more positions around its periphery. Each roller bearing ... | 12/29/1987 |
| 4596179 | Reciprocating machine A reciprocating engine comprising a cylinder, a piston performing reciprocating movement within the cylinder, a crank shaft performing rotational movement, a connecting rod connected rotatably at its one end to the crank shaft and at its the other end to ... | 06/24/1986 |
| 4500141 | Drill steel idler guide An idler guide for a rotary drilling rig has a plurality of spring-loaded floating bearings along the inside wall of a cylindrical bearing member for stabilizing and guiding the rotational and axial movement of drill pipe through the guide. The floating b... | 02/19/1985 |
| 4346945 | Multipurpose reciprocal bearing unit A reciprocal bearing unit to be provided between a shaft and a support member includes a plurality of thin members so layered in the axial direction of the shaft as to form a casing with a plurality of recessions in which a plurality of rollers are so arr... | 08/31/1982 |
