Edward R Engel

US Patent:

61696536, Jan 2, 2001

Filed:

Dec 21, 1998

Appl. No.:

9/217152

Inventors:

Edward Ira Engel - Hamilton OH

Assignee:

Square D Company - Palatine IL

International Classification:

H02B 100

US Classification:

361600

Abstract:

An apparatus for providing precise alignment between primary and secondary contacts mounted on a circuit breaker and associated stationary primary and secondary contacts located with substantial precision with respect to X, Y and Z coordinates and mounted on a back panel of a switchgear breaker compartment. A locking/locate cradle is provided with two generally parallel guide rails that slidably receive and support the circuit breaker within the breaker compartment. The precise X, Y and Z-axes alignment of the guide rails with the X, Y and Z axes position of the stationary primary and secondary contacts on the back panel is crucial for proper mating and connection with the associated breaker primary and secondary contact. The back panel is provided with at least one alignment slot having two indexing sections spaced apart by an aligning section. The two indexing sections are located with substantial precision with respect to X, Y and Z coordinates of the back panel and the X, Y and Z coordinate position of the stationary primary and secondary contacts mounted on the back panel.

US Patent:

62714899, Aug 7, 2001

Filed:

Dec 31, 1999

Appl. No.:

9/477915

Inventors:

Edward I. Engel - Hamilton OH
Larry Gene Ratliff - Middletown OH

Assignee:

Square D Company - Palatine IL

International Classification:

H01H 150
H01H 2154

US Classification:

200256

Abstract:

A pressure switch device and method of forming the device is disclosed. The switch has a hinge terminal having a fixed end of a blade apparatus pivotally attached thereto, a jaw terminal adapted to receive a free end of the blade apparatus at a receiving portion, the blade apparatus having two blades fastened together and a spacer between the blades. Pairs of cams at either end of the blades rotate to engage protrusions in order to create a pressure lock. The pressure is enhanced by a spring washer. A connecting link attached one of each pair of cams, a drive link attached to the blades and connecting link, and a drive shaft cooperate to open and close the switch such that the switch may be first placed in a closed position, and then locked by further rotation of the drive shaft as the cam protrusions engage. The drive shaft is spring loaded to create torsional force which must be overcome to rotate the drive shaft in either direction.