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:
May. 07, 1985
Filed:
Apr. 12, 1983
Applicant:
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
13762521 ; 137495 ; 91433 ; 91467 ;
Abstract
The invention relates to a pneumatically driven control valve for the reversible operation of a pneumatic unit. In an addition to an air distribution system for regulating the speed of the pneumatic unit, the control valve incorporates an air volume control system which is fully integrated into the air distribution system. The key component is a rotary slide valve, the rotation of which distributes the compressed air while its axial displacement throttles the air stream flowing through the valve, the degree of throttling depending upon the pressure level of the compressed air delivered to the pneumatic unit. In this way, the control valve is kept simple in construction with very few moving parts and high functional accuracy.