Bizarre Patents
A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 7552657 | Long-span lead screw assembly with anti-backlash nut A lead screw assembly having a lead screw rotatable within a hollow tubular portion of a reinforcing rail. A nut engages with threads of the lead screw and is movable along the reinforcing rail. The lead screw includes plurality of first threaded portions having an ... | 06/30/2009 |
| 7219570 | Long-span lead screw assembly with anti-backlash nut A lead screw assembly having a lead screw rotatable within a hollow tubular portion of a reinforcing rail. A nut engages with threads of the lead screw and is movable along the reinforcing rail. The lead screw includes plurality of first threaded portions having an ... | 05/22/2007 |
| 6467362 | Reinforced lead screw with spring biased anti-backlash nut An anti-backlash nut is assembled on a reinforced lead screw for bilateral motion lengthwise of the lead screw as the screw is rotated. A hollow, elongate reinforcing rail extends lengthwise of and surrounds the lead screw. A slot in the rail extends leng... | 10/22/2002 |
| 6422101 | Reinforced lead screw with springless anti-backlash nut An anti-backlash nut assembly is on a reinforced lead screw having a threaded lead screw rotatable about a central axis. A hollow, elongated reinforcing rail extends lengthwise of and surrounding the lead screw. The reinforcing rail has a slot extending l... | 07/23/2002 |
| 6415673 | Reinforced lead screw with anti-backlash nut An anti-backlash nut is assembled on a reinforced lead screw for bilateral motion lengthwise of the lead screw as the screw is rotated. A hollow, elongate reinforcing rail extends lengthwise of and surrounds the lead screw. A slot in the rail extends leng... | 07/09/2002 |
| 6240798 | Reinforced anti-backlash nut with graduated thread depth fingers An anti-backlash nut has flexure members which are continuously biased inwardly against a lead screw by a force-applying sleeve which acts on ramps on the flexure member. The spline means include means on the longitudinal flexure members and the force app... | 06/05/2001 |
| 6202500 | Reinforced lead screw with anti-backlash nut An anti-backlash nut assembly is disclosed on a reinforced lead screw. The mechanism includes a hollow, elongate reinforcing rail surrounding a lead screw and an anti-backlash nut assembly movable along the reinforcing rail. The anti-backlash nut assembly... | 03/20/2001 |
| 6131478 | Anti-backlash nut assembly An anti-backlash nut, movable along a rotatable screw. The nut has internal threads complementary to the threads in the screw. The nut has two nut halves movable as a unit and also rotatable relative to each other on the screw, and are connected to the nu... | 10/17/2000 |
| 6117249 | Treating metallic machine parts A method of treating a metallic machine part to increase wear life and to change surface appearance comprising the steps of roughening the surface, thereafter changing its color by case hardening and, subsequently, increasing the lubricity of the case har... | 09/12/2000 |
| 6099166 | Longitudinal stabilizer for vibration reducing bushing A rider having a centralizing or radially stabilizing bushing that reduces vibration and a longitudinal stabilizer element or lip to prevent longitudinal translation of the stabilizing bushing. The centralizing bushing maintains contact, alignment, and ge... | 08/08/2000 |
| 6041671 | Miniature anti-backlash nut assembly An anti-backlash mechanism is described in the form of a pair of nuts or nut halves with internal threads complementary to the threads on a lead screw. The mechanism is traslated by rotation of the screw. One of the nuts has an outer cantilevered wall wit... | 03/28/2000 |
| 5937702 | Spring bias wedge in reinforcing rail The reinforced lead screw has a hollow, elongated reinforcing rail surrounding a lead screw and a nut-bearing movable along the reinforcing rail. The nut-bearing has a portion projecting through a slot in the reinforcing rail and includes threads to engag... | 08/17/1999 |
| 5913940 | Adjustable preload anti-backlash nut An anti-backlash nut designed to translate along a lead screw in two longitudinal directions is disclosed. The nut has one or more longitudinal flexure members each having one end fixed to the nut and the other one free floating. Internal threads are form... | 06/22/1999 |
| 5913941 | Reinforced lead screw The reinforced lead screw has a hollow, elongate reinforcing rail surrounding a lead screw and a nut-bearing movable along the reinforcing rail. The nut-bearing has a portion projecting through a slot in the reinforcing rail and includes threads to engage... | 06/22/1999 |
| 5732596 | Anti-backlash nut assembly An anti-backlash nut, movable along a rotatable screw. The nut has internal threads complementary to the threads in the screw. The nut has two nut halves movable as a unit and also rotatable relative to each other on the screw. Means are connected to the ... | 03/31/1998 |
| 5601372 | Vibration reducing brushing A centralizing bushing associated with a shaft for reducing noise and fluctuations between the bushing and the shaft when they are moving relative to each other. The bushing is mounted in the rider and includes a bearing engagable with the shaft. There ar... | 02/11/1997 |
| 5027671 | Reinforced anti-backlash nut An anti-backlash nut has flexure members which are continuously biased inwardly against a lead screw by a force applying sleeve which acts on ramps on the flexure member. The spline means include means on the longitudinal flexure members and the force app... | 07/02/1991 |
