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. 20, 1987
Filed:
Oct. 11, 1985
Paul Dietiker, Redondo Beach, CA (US);
Marvin D Nelson, St. Louis Park, MN (US);
Honeywell Inc., Minneapolis, MN (US);
Abstract
A fluid pressure regulating valve having a two-stage high and low flow rate control capability combined with a natural-LP gas control pressure changeover uses a spring biased pressure regulating diaphragm controlling a fluid through an orifice defined by a valve seat. A solenoid valve armature is attached to a spring providing the spring bias for the diaphragm and is arranged to be actuated by a selectively energizable solenoid coil. An extension of the armature is captured by a step regulator assembly which is threaded into a valve body containing the regulating diaphragm. The high fire and low fire adjustments in the step regulator assembly are on non-moving threaded members attached to the regulator assembly and bearing on the extension of the armature to vary the energized and deenergized position of the solenoid armature. A positive temperature coefficient material heated by an energizing current for the solenoid operating the valve is located in an energizing circuit of the solenoid coil to provide a change in the energization of the solenoid coil after a threshold temperature of the material is reached. The natural-LP gas pressure changeover utilizes a cam encircling the extension of the armature and a stop means resting on the cam while supporting the end of the armature extension. A screw driver slot is provided for varying the position of the stop member on the cam surface to provide stable natural and LP gas operating positions.