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:
Jul. 05, 1994
Filed:
Mar. 23, 1993
Perfection Corporation, Madison, OH (US);
Abstract
An improved gas riser comprises a pipe nipple, casing, adaptor sleeve, tube, and stiffener. The adaptor sleeve features an internal stop which accurately positions an end of the plastic tube before the tube is plastically deformed into grooves in an internal surface of the adaptor sleeve. Each of the first and second ends of the adaptor sleeve can be manufactured in different diameters to fit pipe nipples and casings that are required by different code regulations. The method of assembling the gas riser comprises inserting a first end of the adaptor sleeve into a second end of a pipe nipple, inserting a second end of the adaptor sleeve into a first end of the casing, welding the second end of the pipe nipple and the first end of the casing to the adaptor sleeve, inserting a stiffener into a tube end, inserting the tube end into the adaptor sleeve, pulling a mandrel through the assembly which plastically deforms the stiffener and forms a seal by urging the tube into grooves on an interior surface of the adaptor sleeve.