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. 04, 1983
Filed:
Nov. 24, 1980
Applicant:
Inventor:
Michael J Scott, Feilding, NZ;
Assignee:
Allflex International Limited, Palmerston North, NZ;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01J / ;
U.S. Cl.
CPC ...
137103 ; 91468 ; 119 1408 ; 13762568 ;
Abstract
A venting valve comprising a body having first and second ports. A movable valve member having a venting passage is located in the body and is biassed to a first position where the venting passage provides communication between the first and second ports. A chamber is located within said body and a third port opens into the chamber. The construction and arrangement is such that the introduction of sub-atmospheric pressure into the chamber via the third port causes the valve member to move to a second position where the first port is isolated from the second port but is opened to the third port via the chamber.