Round counter
US4001961A · kind A · utility
29Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1975 |
| Grant date | Jan 11, 1977 |
| Priority date | — |
| Expiry date | Sep 3, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41A19/01
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An electrochemical elapsed time meter indicator with round counter circui for a gun to indicate past usage whereby maintenance and repair or replacement procedures will insure greater reliability in critical field use. The meter, working on an electroplating principle as a function of current and time, may be activated by gun use such as by a switch on the gun trigger, an inductance or piezoelectric transducer in the buffer, a recoil operated microswitch or as part of the circuit in externally powered guns. The meter preferably is color coded to indicate weapon condition, area of use, and replacement or maintenance required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.