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:
May. 19, 1981
Filed:
Jul. 25, 1979
Douglas R Scott, Knoxville, TN (US);
Robertshaw Controls Company, Richmond, VA (US);
Abstract
A pneumatic control system for controlling a pneumatically operated device in relation to the operation of a pneumatic signal sending thermostat and a pneumatic signal sending set point adjuster, the set point adjuster being adapted to direct its pneumatic signal to pneumatically operated temperature setting means of the thermostat to set the temperature sensor of the thermostat to a particular temperature thereof whereby a valve means of the thermostat is adapted to direct its pneumatic signal to the device to control the device in relation to the differential between the temperature sensed by the temperature sensor and the temperature setting thereof. The thermostat has an output chamber for directing its pneumatic signal and is disposed remote from the pneumatically operated temperature setting means thereof which is interconnected to the valve means by interconnection means, the temperature sensor being effectively interconnected to the interconnection means intermediate the valve means and the setting means. The set point adjuster has a temperature sensor for changing its setting in relation to sensed temperature thereof. The set point adjuster has a setting means that includes an adjustable spring member that also comprises the temperature sensor thereof.