JOHN K LEWIS
Vehicle Board in Vienna, VA
License number
Pennsylvania VR003453L
Category
Vehicle Board
Type
Vehicle Representative
Address
Address
2
Vienna, VA 22180
Pennsylvania
Pennsylvania
Professional information
Electrical Plug Guard
US Patent:
4305634, Dec 15, 1981
Filed:
Mar 25, 1980
Appl. No.:
6/133712
Inventors:
John S. Lewis - Vienna VA
International Classification:
H01R 1354
US Classification:
339 75R
Abstract:
The electrical plug guard comprises a disc member having a pair of elongated slots to frictionally receive the prongs of an electrical plug. The slots have centers offset with respect to each other along the length of the slots. The slots are effective to skew the prongs of the plug with respect to each other when the prongs are inserted in slots through the disc member. The disc member has a thickness sufficient to prevent finger contact with the prongs which are electrically active when partially inserted into an electrical plug outlet.
Personal Ambient Sound Referenced Annunciator
US Patent:
4297677, Oct 27, 1981
Filed:
Dec 10, 1979
Appl. No.:
6/101735
Inventors:
John S. Lewis - Vienna VA
Edmond P. DiGiannantonio - Reston VA
Howard R. Boyle - Alexandria VA
Edmond P. DiGiannantonio - Reston VA
Howard R. Boyle - Alexandria VA
International Classification:
G08B 1300
US Classification:
340148
Abstract:
A personally worn or portable annunciator device for alerting, warning, training, communicating or diagnostic use for people especially those with hearing impairments. This device which can be activated locally or remotely has as one of its means of generating a tactile sensation a transducer or buzzer, as well as a visual light both of which are activated automatically upon the detection of an audio signal substantially above the local ambient noise, or by a RF signal remotely generated by an auxiliary unit.