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:
Aug. 31, 1993
Filed:
Nov. 09, 1992
David J Vigil, Worland, WY (US);
Other;
Abstract
An inflatable bladder type valve that is used to restrict the flow of water passing through an irrigation pipe is described for insertion through a standard size opening or through an enlarged opening in an irrigation pipe. Means to convey a fluid, such as air, under pressure to the bladder type valve and an air release valve for limiting the air pressure are described. Means to secure the bladder type valve in position include a reinforced hook attached to a hose, a tapered wedge attached to a hose, and a high friction surface on the valve. A covering is placed over the bladder to restrict the dimensions of the bladder when it is inflated. A taped plug is described for restricting the flow of water through the enlarged opening when the valve is removed.