U.S. patents available from 1976 to present.
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Patent No. 5823572

Self Defense Weapon With Memo

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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Class 74/152 - Cooperating holding pawl


Subclass of Class 74 - Machine element or mechanism
Definition: Devices, in which a holding pawl is adapted to prevent retrograde
No. of patents: 3
Last issue date: 03/16/1999


NumberTitleIssue Date
5881854Mechanism for controlling a rotary member by means of a pivoting handle, and a seat fitted with such a mechanism
The mechanism is to apply drive in both directions of rotation to a ring having an inside set of teeth, the drive being applied by means of a pivoting handle. The ring cooperates with two locking pawls mounted on a stationary cheekplate and with a toothed...
03/16/1999
4403523Reversible stepping actuator
A high torque reversible stepping actuator for valves can drive in small increments in response to fluid pressue pulses. The stepping actuator has oppositely facing ratchet wheels on a common shaft linked to the stepping actuator output. A pair of operato...
09/13/1983
4206658Rotary ratchet mechanism
Rotary ratchet mechanism includes a ratchet wheel rotating about a first axis. A dog at one end of a lever engages a tooth of a wheel to rotate it in one direction. The lever is pivoted to a member at a point spaced from its end, the member being movable ...
06/10/1980
 
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