Other

General Electric Company

Trw Limited

Camco International, Inc.

Burton T Mackenzie

Maurice Prober

Stanley E Kiersztyn

Edward W Bryant

A maximum temperature indicator comprises a body of inexpensive and highly durable polymeric material adapted to be affixed to a support, such as within a mechanical device. The polymeric material undergoes a detectable physical change unique to a maximum temperature to which the polymeric material was exposed. After exposure, the polymeric material is easily tested to accurately determine the maximum temperature that the sample was exposed to.

Maximum temperature indicator

A low profile electrical cable (10) suitable for use in an oil well where a high temperature corrosive atmosphere is present. The cable is comprised of a plurality of conductors (12) wherein each conductor is insulated by wrapping it in two heat-sealed layers (14) in an insulating material such as a polyimide plastic. The insulation layers around each conductor are then jacketed by an extruder layer (16) of a material which is mechanically and chemically stable to at least 400.degree. F. The insulated and jacketed conductors are disposed in a side-by-side parallel relationship and wrapped in a metal armor (20) such as a nickel-copper alloy. The physical properties of the insulating and jacketing materials allow very thin layers to be used for producing a cable which is smaller in overall dimensions than prior cables of comparable electrical capacity. Optionally, a braid (18) may be included around the jacket (16) of each conductor to enhance the overall strength characteristics of the cable.

Low profile submersible electrical cable

Polyolefin compounds containing nitrile polysiloxane fluid which have improved electrical properties, and electrical conductors insulated therewith.

Dielectric insulating polyolefin compositions containing nitrile

Dielectric insulating polyolefin compounds and conductor products

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Lawrence, KS, United States of America

Burton T Mackenzie