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:
Oct. 31, 1978
Filed:
Feb. 28, 1977
Gordon F Ehret, Alhambra, CA (US);
William N Rowley, Palos Verdes Estates, CA (US);
Wylain, Inc., Dallas, TX (US);
Abstract
A test plug assembly for insertion into a housing for preventing liquid under pressure from flowing therethrough includes an assembly body with an undersurface shaped and dimensioned to mate with a shaped upper portion of the housing. A plurality of flanges which project from the outer surface of the body are located and spaced apart so that the studs can pass between the flanges when the body is inserted into the housing and so that the uppermost surface of the flanges will engage the lowermost surface of the studs when the shaped upper portion and undersurface are in contact and the body is rotated relative to the housing. The body further includes a gripper for gripping the body so it can be rotated into engagement with the housing. A method of pressure testing a fitting for a liquid inlet includes the steps of installing an inlet fitting on a pipe which is located beneath the underwater surface and which communicates with a source of liquid under pressure, mounting a liquid jet housing on the fitting by forming a leak proof connection between the fitting and housing, inserting a removable plug into the housing which is capable of preventing liquid from passing through the housing at a testing pressure, introducing liquid at a testing pressure into the housing through the inlet fitting, and replacing the removable plug with the housing's normal internal assembly.