Charles Hugh Draper

US Patent:

42636370, Apr 21, 1981

Filed:

Jun 14, 1977

Appl. No.:

5/806564

Inventors:

Charles W. Draper - Clearwater FL
Raymond H. Legatti - Belleair FL

Assignee:

Square D Company - Palatine IL

International Classification:

H02H 328

US Classification:

361 45

Abstract:

An electric receptacle for trade size outlet boxes having a ground fault circuit interrupting mechanism incorporated therein. A receptacle housing includes contact jaws seated therein to receive the plug of a conductor leading to a load, electronic components to detect a ground fault and grounded neutral condition on the load side of the receptacle, plus a coil and trip mechanism to open the receptacle circuit on occurrence of a ground fault or grounded neutral condition. The complete receptacle assembly is approximately the same depth as conventional household receptacles which do not have ground fault circuit interrupting means included therein. Means to periodically test the ground fault interrupting mechanism is also included in the receptacle assembly, as well as means to indicate the circuit has been interrupted and means to reset.

US Patent:

43096816, Jan 5, 1982

Filed:

Mar 31, 1980

Appl. No.:

6/135594

Inventors:

Charles W. Draper - Clearwater FL
Raymond H. Legatti - Belleair FL

Assignee:

Square D Company - Palatine IL

International Classification:

H01H 8302

US Classification:

335 18

Abstract:

An electric receptacle for trade size outlet boxes having a ground fault circuit interrupting machanism incorporated therein. A receptacle housing includes contact jaws seated therein to receive the plug of a conductor leading to a load, electronic components to detect a ground fault and grounded neutral condition on the load side of the receptacle, plus a coil and trip mechanism to open the receptacle circuit on occurrence of a ground fault or grounded neutral condition. The complete receptacle assembly is approximately the same depth as conventional household receptacles which do not have ground fault circuit interrupting means included therein. Means to periodically test the ground fault interrupting mechanism is also included in the receptacle assembly, as well as means to indicate the circuit has been interrupted and means to reset.

US Patent:

40158888, Apr 5, 1977

Filed:

Nov 5, 1975

Appl. No.:

5/629163

Inventors:

Charles W. Draper - Clearwater FL
Raymond H. Legatti - Belleair FL

Assignee:

Square D Company - Park Ridge IL

International Classification:

H01R 306

US Classification:

339 14P

Abstract:

A portable electrical device has a molded body having a cavity closed by a rear wall. Two conductive prongs project through the rear wall for reception into a phase port and a neutral port, respectively, of an electrical outlet. A retractable grounding pin or prong, when in an extended position, extends outwardly from the rear wall in parallel spaced relationship with the two prongs and is receivable by a ground port of the outlet if there is one. When the device is used with an electrical outlet not having a ground port, the grounding pin retracts within the cavity against a spring bias. An indicating pin is operatively connected to the grounding pin and moves, in response to retracting movement of the grounding pin, to an exposed position within a recess in a front wall of the body to provide a visual indication that the device is not grounded by the grounding pin.