Power plants – Motor operated by expansion and/or contraction of a unit of... – Mass is a liquid
Patent
1982-05-25
1984-05-29
Ostrager, Allen M.
Power plants
Motor operated by expansion and/or contraction of a unit of...
Mass is a liquid
236101R, F03G 706
Patent
active
044506872
ABSTRACT:
The invention relates to a temperature responsive control assembly which uses the volumetric expansion of a substance having a high coefficient of expansion, to expel a piston from a cylinder, such movements of the piston relative to the cylinder being used to control relative movements between first and second load elements, such as for example a window and a window frame, with the cylinder being connected to the first load element and the piston being connected by way of a high leverage operating linkage with the second load element, and wherein the thermally expansive substance is located in the cylinder between end plugs and the piston passes through one of the end plugs there being shaft seal means carried by the end plug and sealing around the piston passing through it, the piston having its inboard end immersed in the thermally expansive substance. The invention is characterized in that the piston bears axially with its outboard end upon an inboard end of a push rod which can be moved separately from and independently of the piston and which is guided for axial sliding movements, generally in line with the axis of movements performed by the piston, this push rod being connected and arranged to transmit control forces between the piston and the high leverage operating linkage operatively interconnecting the piston with the second load element.
REFERENCES:
patent: 3330480 (1967-07-01), Drapeau et al.
patent: 4140017 (1979-02-01), Cole et al.
Fails James C.
Ostrager Allen M.
Thermoforce Limited
Wofford Wm. T.
Zobal Arthur F.
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