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 |
| 4380420 | Internal gear machine with rotary valve disk The hydraulic internal gear machine includes a positive displacement unit for the working fluid, the unit being formed of a rotary outer gear which is rigidly connected to a rotary control plate provided with control openings arranged between respective t... | 04/19/1983 |
| 4222714 | Radial piston pump A radial piston pump has a housing, a shaft mounted for rotation in the housing and including an eccentric provided with a cam track, inlet and outlet ports in the housing, valve means installed in the ports, a plurality of radially reciprocable pistons s... | 09/16/1980 |
