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. 22, 1991
Filed:
Dec. 22, 1989
Marvin D Burns, Milbury, OH (US);
The DeVilbiss Company, Toledo, OH (US);
Abstract
An improved pressure gauge which constantly indicates gas pressure in a line. A tubular adapter is attached in a gas supply line. The adapter is provided with a passage which permits gas to flow into an annular chamber defined between an outer sleeve secured to the line adapter and a tubular plunger. The plunger, an annular seal, and a spring are retained on the adapter by the sleeve. The seal, plunger and spring are arranged concentrically about the adapter. Gas pressure entering the chamber forces the seal to engage the plunger which, when sufficiently high, compresses the spring, moving and exposing the plunger. The outer surface of the plunger is provided with numbers and lines thereon which indicate gas pressure at the gauge.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile