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:
Mar. 17, 1987
Filed:
Nov. 12, 1985
Kenneth M Kinsey, Henryetta, OK (US);
Tommy E Talton, Okmulgee, OK (US);
Robert L Lay, Schulter, OK (US);
Other;
Abstract
An energy saver door closer for use with a sliding door. A long cylindrical housing is attached to one vertical edge of the sliding door, a weight is in the cylinder and a cable connects the weight over a pulley in the top of the cylinder to an anchor in the door jam. A seal surrounds the weight so that there is a sealing contact with the housing to form a pneumatic cylinder therein. The lower part of the cylinder is provided with passageways which lets air go in or out. The upper part of the weight is provided with a valve which is always biased to the opened position but is held closed so long as the cable is taut When the cable is loose, the valve opens and air can rush out and the door will close faster.