Back to results
US 5,293,012 AGranted
Disconnecting switch
AssigneeA&E Manufacturing Company
InventorJozef Levi
Life of this patent
Estimating the term…
Abstract
A disconnecting switch with improved contacts in the form of a spool contact having one or more circumferential V-grooves and a finger contact having fingers which are provided internally with spring members for maintaining contact pressure. Spaced plastic inserts provide a maintenance free bearing for rotation of switch members.
Claims16
A rotary action disconnecting switch comprising:
- a first generally cylindrical contact having two abutting frusto-conical surfaces forming a circumferential V-groove;
- a second contact in the form of a cylindrical finger;
- and
- means imparting relative rotary motion between said contacts to swing from an open switch position in which said contacts are spaced apart to a closed switch position in which said finger is in contact with both frusto-conical surfaces of said V-groove.
1 more element
A rotary action disconnecting switch comprising:
- a first contact;
- a second contact;
- at least one of said first and second contacts being mounted for rotation through a bearing to a stationary switch terminal, said bearing being a compound bearing having a pair of spaced apart inserts providing a pair of opposed frusto-conical load carrying friction bearing surfaces facing each other, said inserts being made with a plastic resin;
- and
- means imparting relative rotary motion between said contacts by rotation of said at least one of said first and second contacts to swing from an open switch position in which said contacts are spaced apart to a closed switch position in which said contacts are maintained in contact with each other.
2 more elements
Dependencies are inferred from the claim text.