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. 03, 1976
Filed:
Apr. 25, 1974
Robert O Brandt, Garner, NC (US);
Other;
Abstract
The present invention relates to a pneumatic amplifier of the type having a main internal chamber with a thin imperviable member extending thereacross. The thin imperviable member responds to and amplifies a wide range of pressure input signals supplied to the main internal chamber of the pneumatic amplifier valve. In effect, the imperviable member separates the main internal chamber into two compartments. The first compartment receives the pressure input signals which are to be amplified, and the other compartment on the opposite side of the imperviable member receives a steady flow of air from an air supply. Consequently, the imperviable member assumes an operative profile or contour due to the air pressure present in each of the two compartments. A portion of the compartment channeling the air supply through the valve represents a positive and linear amplification of the particular pressure gain signal being applied to the valve. It was discovered that the particular gain of the pneumatic of the present invention could be varied and changed by effecting a change in the operative contour or profile of the imperviable member. To accomplish this, the pneumatic valve of the present invention includes a threaded shaft having a generally rounded head secured to the interior end thereof. By adjustably moving the threaded shaft, the generally rounded head engages the imperviable member and depresses or changes the contour of the valve to effectuate a change or varyance in gain.