The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 1991
Filed:
Jul. 27, 1989
Applicant:
Inventor:
Michael S Russell, Slough, GB;
Assignee:
Kidde-Graviner Limited, Derby, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C / ;
U.S. Cl.
CPC ...
74-57 ; 60 3975 ;
Abstract
For spinning up a gyroscope rotor, a motive power generating unit is used which contains a pyrotechnic gas-generating substance in the form of an azide composition. When electrically ignited, it produces a jet of filtered nitrogen gas which impacts on buckets in the periphery of the rotor and spins it up to speed. The gas generating unit can be used for generating motive power for other purposes.