Relay assembly
First Claim
1. In a relay comprising a housing of electrical insulating synthetic resin material, terminals in said housing extending through the housing to the exterior thereof, at least one of said terminals providing a contact within said housing, a contact arm within said housing connected to another of said terminals, electromagnetic operating means for engaging said contact arm with said terminal contact and for disengaging said contact arm from said terminal contact, means securing each terminal to said housing and to provide a leakproof seal between said terminals and housing, and means for admitting a gas into said housing:
- the improvement wherein said synthetic resin is poly hexamethylene terephthalic amide.
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Accused Products
Abstract
A high voltage magnetic relay is enclosed by an insulating housing containing a gas such as sulfur hexafluoride under pressure. The switch terminals removably extend through a wall of the housing and are sealed. The magnet structure is removably connected to the housing by a sealed joint. A fill valve removably extends through a wall of the housing and is sealed thereto. The armature shifts a pivotal arm in the housing between open and closed contact positions.
The housing is formed of a polyamide material having the property of being resistant to deterioriation by fluorine gas, said material being poly hexamethylene terephthalic amide.
46 Citations
19 Claims
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1. In a relay comprising a housing of electrical insulating synthetic resin material, terminals in said housing extending through the housing to the exterior thereof, at least one of said terminals providing a contact within said housing, a contact arm within said housing connected to another of said terminals, electromagnetic operating means for engaging said contact arm with said terminal contact and for disengaging said contact arm from said terminal contact, means securing each terminal to said housing and to provide a leakproof seal between said terminals and housing, and means for admitting a gas into said housing:
- the improvement wherein said synthetic resin is poly hexamethylene terephthalic amide.
- View Dependent Claims (2, 3, 4, 5, 6)
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7. In a relay comprising a housing of electrical insulating synthetic resin material, terminals in said housing extending through the housing to the exterior thereof, at least one of said terminals providing a contact within said housing, a contact arm within said housing connected to another of said terminals, electromagnetic operating means for engaging said contact arm with said terminal contact and for disengaging said contact arm from said terminal contact, means securing each terminal to said housing and to provide a leakproof seal between said terminals and housing, and means for admitting a gas into said housing:
- the improvement wherein said synthetic resin is amorphous, transparent polyamide made by polycondensation from terephthalic acid and an alkyl-substituted hexamethylene diamine.
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8. A relay comprising:
- a housing of electrical insulating material;
terminals in said housing providing contact means;
contact arm means within said housing connected with another of said terminals;
electromagnetic operating means for engaging said contact arm with and disengaging said contact arm means from said contact means;
means for admitting gas and retaining said gas under pressure in said housing;
said terminals each including a screw in a threaded bore in said housing;
a resilient seal ring between said screw and said housing to prevent loss of gas from said housing;
each screw having means for connection with an electrical conductor. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
- a housing of electrical insulating material;
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18. In a relay comprising a housing of electrical insulating synthetic resin material, terminals in said housing extending through the housing to the exterior thereof, at least one of said terminals providing a contact within said housing, a contact arm within said housing connected to another of said terminals, electromagnetic operating means for engaging said contact arm with said terminal contact and for disengaging said contact arm from said terminal contact, means securing each terminal to said housing and to provide a leakproof seal between said terminals and housing, and means for admitting a gas into said housing;
- said housing having formations between said terminals projecting from the housing and forming an elongated arc path.
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19. In a relay comprising a housing of electrical insulating synthetic resin material, terminals in said housing extending through the housing to the exterior thereof, at least one of said terminals providing a contact within said housing, a contact arm within said housing connected to another of said terminals, electromagnetic operating means for engaging said contact arm with said terminal contact and for disengaging said contact arm from said terminal contact, means securing each terminal to said housing and to provide a leakproof seal between said terminals and housing, and means for admitting a gas into said housing:
- the improvement wherein said synthetic resin is amorphous, transparent polyamide made by polycondensation from terephthalic acid and an alkyl-substituted hexamethylene diamine.
Specification