Robert L Murdock

US Patent:

43261841, Apr 20, 1982

Filed:

Aug 4, 1980

Appl. No.:

6/174823

Inventors:

Robert E. Murdock - Stone Mountain GA

Assignee:

Kearney-National Inc. - Atlanta GA

International Classification:

H01H 7110

US Classification:

337168

Abstract:

An electric cutout includes a fuseholder in which a fusible element is mounted, a conducting element pivotally mounted to the lower end of the fuseholder and having a pair of trunnions disposed within a pair of spaced jaws on which a pair of guide surfaces are respectively mounted for cooperation with complementary guiding surfaces of arcuate configuration on the conducting element so that rotation of the fuseholder and conducting element about the trunnions may be effected in such manner that the trunnions are securely held against the bight portions of the jaws thereby to prevent rocking action of the fuseholder during closing movement thereof, an ejector latching element pivotally mounted on the conducting element and arranged to eject the fusible element upon rupture thereof and also arranged to engage a part of the fuseholder so as to prevent relative movement between the conducting element and the fuseholder, a U-shaped contact fixed in position adjacent the jaws and arranged to engage opposite surfaces of the conducting element so as to form a low impedance contact therebetween, and yieldable latching means fixed in position and arranged for engagement by latch elements formed on the upper end of the fuseholder and constituting conducting portions of the circuit through the cutout.

US Patent:

40023966, Jan 11, 1977

Filed:

Feb 13, 1976

Appl. No.:

5/657856

Inventors:

Robert E. Murdock - Atlanta GA

Assignee:

Kearney-National, Inc. - Atlanta GA

International Classification:

H01R 1352

US Classification:

339111

Abstract:

An electric terminal such as a transformer bushing having a contact socket of conducting material is provided with a quench tube arranged in aligned substantially coaxial relation with the contact socket. An associated connector which may be of the elbow type is provided with a contact pin which includes a tubular element of conducting material having an end of reduced diameter on which a hollow sleeve is disposed thereabout and formed of strong plastic material having an enlarged end nose portion of the same or of a different plastic material together with a sleeve of arc extinguishing material which is disposed about the plastic sleeve and arranged with one end in snug engagement with the enlarged end portion which is bevelled at its outer end to facilitate entry of the contact pin into and through the quench tube and into the contact socket so as to form a connection between the contact socket and the tubular element of conducting material.