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:
Oct. 27, 1981
Filed:
May. 02, 1980
Jay L Lewis, Knoxville, TN (US);
Robertshaw Controls Company, Richmond, VA (US);
Abstract
A pneumatically operated system having a control unit provided with a single inlet interconnected to a one pressure level pneumatic source and having an outlet arrangement interconnected to a pneumatically operated heating and cooling heat exchanger to control the same in either its heating mode or its cooling mode in relation to the pressure value of the pneumatic signal being directed thereto from the control unit through the outlet arrangement thereof, the control unit having a temperature sensing arrangement for controlling the value of the signal in relation to the sensed output temperature of the heat exchanger by operating a bleed arrangement of the control unit. The outlet arrangement comprises a single outlet and the bleed arrangement comprises a single bleed device having an arrangement of parts thereof that is the same regardless of whether the heat exchanger is operating in its heating mode or in its cooling mode whereby the heat exchanger is adapted to be operated in either its heating mode or its cooling mode by the single bleed device without changing the arrangement of the parts of the bleed device and by a one pressure level pneumatic source.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile