H - Electricity – 01 – H
Patent
H - Electricity
01
H
360/1, 309/14
H01H 37/04 (2006.01) A47C 21/04 (2006.01) A47C 27/08 (2006.01) H01H 37/42 (2006.01)
Patent
CA 1270508
ABSTRACT OF THE DISCLOSURE A controller for an electric resistance waterbed mattress heater supplied with electric current by an elongate power cord extending between the heater and a power service outlet. The controller includes a small diameter elongate cylindrical housing in which an adjustable on and off switch is mounted and into which the cord is extended and connected with the switch. The switch includes a Bourdon tube to actuate the switch between opened and closed positions when the tube is caused to deflect by changes of pressure therein. A capillary tube is connected with and extends from the Bourdon tube to the exterior of the housing and about which it is formed and supported. An adjusting knob is positioned at one end of the body and is coupled with a part of the switch to move switch parts relative to each other and to the Bourdon tube to adjust and set the operating position of parts of the switch.
543330
Johnson Douglas S. Q.c.
Miles Floyd D.
Thermafoil Products Inc.
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