Pressure-operated Patents (Class 236/26R)
With balancing pressure chamber (Class 236/27)
Stroke retarding (Class 236/28)
Relay, puppet (Class 236/29)
Bourdon type (Class 236/30)
Float (Class 236/31)
Gas burner controls (Class 236/26A)
Pressure responsive means controls draft (Class 236/26B)
Pressure responsive elements per se (Class 236/26C)
Pressure responsive means controls forced draft (Class 236/26D)
Pressure responsive means controls oil burner (Class 236/26E)
Pressure responsive means controls fluid coupling (Class 236/26F)
  • Temperature regulating system employing thermostatic switching devices to assure safe operation of the system in both hazardous and non-hazardous applications
    Patent number: 6158231
    Abstract: An energy control and transmission system which monitors temperature in piping systems, electronic systems and the like. Energy in the form of a heated or chilled fluid is delivered to the devices and/or regions of interest to maintain temperature conditions thereat within a safe range of values. Electrical energy employed in the system is confined to the location from which the fluid is pumped, eliminating the presence of electricity in hazardous or dangerous areas. Non-electrical temperature indicators are utilized to permit branching flow of the temperature controlling fluid from a closed loop responsive to detection of a temperature condition outside of the desired range of values. The opening of such a branching path triggers operation of a pressure sensitive switch which activates a pump for delivery of the temperature controlling fluid.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: December 12, 2000
    Inventor: Jan L. Singer
  • Firing rate control system for a fuel burner
    Patent number: 4787554
    Abstract: A boiler control system utilizing a microcomputer, a memory, and a firing rate control scheme provides a boiler with a more responsive control arrangement. This improved response is accomplished by the firing rate control converting the desired pressure setpoint to a computed temperature, and then establishing a computed pressure band for control of the boiler.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: November 29, 1988
    Assignee: Honeywell Inc.
    Inventors: James I. Bartels, Kenneth B. Kidder
  • Fuel burner control system with low fire hole
    Patent number: 4513909
    Abstract: A boiler control utilizing a pressure sensor is provided that operates the system in the low fire mode if the load is light and can be satisfied in that mode. If the low fire operation is inadequate to hold the load, and the pressure drops, the boiler is then operated in a modulating mode which includes a high fire limit.
    Type: Grant
    Filed: September 17, 1984
    Date of Patent: April 30, 1985
    Assignee: Honeywell Inc.
    Inventor: James I. Bartels
  • Adaptive low fire hold control system
    Patent number: 4513910
    Abstract: A boiler control utilizing a pressure sensor is provided that operates the system in the low fire mode if the load is light, and can be satisfied in that mode. If the low fire operation is inadequate to hold the load and the pressure drops, the boiler is then operated in a modulating mode which includes a high fire limit. This is accomplished by sensing the variation of a pressure responsive means and by providing a burner control system that monitors that pressure responsive means.
    Type: Grant
    Filed: September 17, 1984
    Date of Patent: April 30, 1985
    Assignee: Honeywell Inc.
    Inventor: James I. Bartels