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:
Jun. 27, 2000
Filed:
Feb. 14, 1997
James Richard Ellett, Edmonton, CA;
Argus Machine Co. Ltd., Edmonton, CA;
Abstract
A pig injector has a magazine having a plug at one end and connected to a pig injector valve at the other end. The pig injector valve has a rotatable pig receiving chamber with a length L. Plural pigs of length L between rounded ends are positioned end to end within the elongate interior cavity of the magazine. A method of injecting pigs into a pipe at a pig injector valve comprising: (a) storing plural pigs in a magazine connected to the pig injector valve; (b) rotating the ball of the pig injector valve to be in position to receive a pig and close the pipe; (c) moving a pig from the magazine into the pig injector valve; (d) rotating the ball of the pig injector valve to open the pig injector valve and release the pig in the pipe; (e) moving the pig away from the pig injector valve with fluid pressure in the pipe; and subsequently repeating steps (b)-(e) with a second pig. Steps (b)-(e) may be repeated plural times and at regular intervals.