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:
Feb. 21, 1989
Filed:
Dec. 22, 1987
Jiri E Lhota, Salviagatan, SE;
Garphyttan Haldex AB, Landskrona, SE;
Abstract
The compressed air flow in an air drier is directed to either one of its two drying towers by a switch-over valve whose switch-over function is performed with the air drier unloaded by an unloader valve arranged between the air drier and a compressor. The unloader valve is caused to perform its unloading function not only at a predetermined pressure in an air tank to which the air is fed but also--by an electronic control device--after a predetermined time during periods of prolonged continuous air loading from the compressor through the air drier even if the predetermined pressure is not reached.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile