Calibration and mounting structure for motor controllers or the

Details Calibration and mounting structure for motor controllers or the Calibration and mounting structure for motor controllers or the

1976-01-29

1977-09-06

Harris, George

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

337 94, H01H 6100

Patent

active

040471411

ABSTRACT:
A motor overload protector or the like is disclosed in which a bimetal snap disc is centrally supported by a stud which is press fitted into a bore within the body. The stud is knurled to provide axially extending teeth having a root diameter at least substantially equal to the diameter of the body stud receiving bore prior to the insertion of the stud so that sufficient friction is provided to maintain the stud in the calibrated position. Additional locking is provided where necessary by forming the stud with annular ribs which interlock with a potting material applied after assembly of the stud within the body. The device is calibrated by maintaining the disc at the desired operating temperature as the stud is pressed into the body stud receiving bore until the disc operates.

REFERENCES:
patent: 2488049 (1949-11-01), Bolesky
patent: 2839640 (1958-06-01), Epstein
patent: 2892910 (1959-06-01), Diebold
patent: 3103566 (1963-09-01), Epstein

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