Geometrical instruments – Area integrators – Electrical
Patent
1978-12-19
1980-12-30
Goldberg, Gerald
Geometrical instruments
Area integrators
Electrical
33180R, G01B 328
Patent
active
042415080
ABSTRACT:
This invention is a machine component, specifically a bolt, incorporating a means of indicating the clearance the component has with an associated operating part. The device is in the form of a hollow bolt, within which is a slidable, but frictionally restrained, pin which protrudes from the head of the bolt. The device finds particular usefulness in mechanisms which, in the position in which the clearance is critical, are unaccessible for direct measurement.
REFERENCES:
patent: 340883 (1886-04-01), Kells
patent: 2363165 (1944-11-01), Vierling
patent: 2413797 (1947-01-01), Stone
patent: 2445176 (1948-07-01), Hoffman
patent: 2514794 (1950-07-01), Prince
patent: 2667700 (1954-02-01), Pistoles
patent: 2729891 (1956-01-01), Winter
Corr Denis E.
Donahue B. A.
Goldberg Gerald
Orlob Glenn
The Boeing Company
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