Patents Assigned to Safety Electrical Equipment Corp.
  • Air-conditioning/heating system
    Patent number: 4357988
    Abstract: A dual capacity air-conditioning/heating system including an evaporator, a blower, a compressor and compressor motor, the compressor motor having a two-speed mode of operation. The compressor motor speeds are changed by changing the shunt field current of the motor to achieve a significant reduction of energy consumption in the low-speed mode of operation. The blower motor has a two-speed mode of operation by changing the series armature resistance thereof.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: November 9, 1982
    Assignee: Safety Electrical Equipment Corp.
    Inventors: David J. Hudson, Willard P. Francis