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:
Jan. 21, 1992
Filed:
Mar. 27, 1991
Leonard P Tetrault, Northport, NY (US);
Aerodyne Controls Corporation, Ronkonkoma, NY (US);
Abstract
A mechanism for instantly and accurately adjusting pressure of air passed by a pressure regulator with a valve assembly controlled by a flexible diaphragm. A compressed coil spring bears on the diaphragm. A non-rotating spring guide plate bears on the coil spring. A pinion shaft has a threaded end engaged with a threaded portion of the spring guide plate to move it axially of the coil spring. A pinion gear on the shaft is engaged by spur gears which are in turn engaged by a ring gear. Rotation of the ring gear advances and retracts the spring guide plate axially of the coil spring. A knob ring disposed adjacent a stationary calibrated pressure scale and secured to the ring gear, indicates the pressure of air passed by the regulator for each position of the knob ring around the scale.