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 310/122 - By additional dynamoelectric machine


Subclass of Class 310 - Electrical generator or motor structure
Definition: Subject matter in which the mechanically controlled element
No. of patents: 5
Last issue date: 12/17/2002


NumberTitleIssue Date
6493924Method for enabling a high torque/high speed brushless DC motor
A high torque/high speed brushless DC motor system for controlling both the speed and torque of the motor including a rotor and a stator, the stator of the motor including a first, second and third winding. The system further includes means for sensing th...
12/17/2002
4755700Variable speed AC motor
In a first type of variable speed electric motor, two coaxial shafts are mounted in a housing. Two rotors are mounted on each shaft. Two stators are mounted in the housing. Each of the stators is in operative association with a rotor mounted on a differen...
07/05/1988
4473752Aircraft engine starting with synchronous ac generator
The invention relates to a starter-generator machine (10) for starting turbine type aircraft engines. The machine combines an induction motor with a synchronous samarium cobalt generator. In the machine, a rotor-shaped stator (22) is fixed and positioned ...
09/25/1984
4101794Motor seals
A submersible motor comprising a first housing including a motor and a second housing enclosing electrical connections between the motor and a jacketed electrical cord to the second housing. The first housing has a cavity therein in the periphery thereof....
07/18/1978
4087698Alternating current power generating system
A system for generating alternating current of selected voltage at a target frequency includes a plurality of A.C. generators, at least one of which has a rotatably mounted stator. A prime mover drives a power input shaft at speeds extending through a wid...
05/02/1978
 
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