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. 11, 1986
Filed:
Jan. 10, 1985
Friedrich Bauer, Vienna, AT;
Karl Rein, Vienna, AT;
Hoerbiger Ventilwerke Aktiengesellschaft, Vienna, AT;
Abstract
A device for regulating the delivery of rotary compressors, such as screw-type compressors with oil injection, comprises a regulating valve for varying the cross-sectional area of a suction pipe and a non-return valve which closes said suction pipe. The two valves are disposed one behind the other in the flow direction within a casing incorporating a suction pipe. In order to provide a low resistance to flow and to simplify the construction, both valves are in the form of flap valves with the flap of the non-return valve arranged to close a valve seat provided in the casing and being pivotable against a resetting force about an axis extending outside the cross-sectional area of the valve seat.