Dennis Sterling Holt
Engineers at Hosley St, Manchester, NH

License number
Colorado 16775
Issued Date
Dec 14, 1979
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Professional Engineer
Address
Address
59 Hosley St, Manchester, NH 03103

Professional information

Dennis Holt Photo 1

Socket For Compact Fluorescent Lamp

US Patent:
2009020, Aug 13, 2009
Filed:
Feb 12, 2008
Appl. No.:
12/069732
Inventors:
Karl-Wilhelm Vogt - Ense, DE
Tobias Brown - New Paltz NY, US
Markus Pieper - Arnsberg, DE
Albert M. Cavallaro - Durham NH, US
Dennis S. Holt - Manchester NH, US
International Classification:
H01R 13/66
US Classification:
43962002
Abstract:
A device for holding a compact fluorescent lamp in a light fixture with a socket and a lamp base is shown and described. The bayonet-type fixing of the lamp base in a socket is effected by means of a plug-and-rotate motion. In order to give manufacturers of light fixtures the possibility of manufacturing light fixtures for lamps with a predetermined or maximally admissible lamp wattage, the invention proposes a key system with seven key pairs. Each key pair comprises a lamp key and a socket key and characterizes a predetermined lamp wattage. Concretely speaking, the socket key is a lug arranged in a hole and the lamp key is a plug corresponding to the socket hole with a outwardly open cutout. In addition, a key system for making predetermined lamp types recognizable is described.


Dennis Holt Photo 2

Lamp Base

US Patent:
2009004, Feb 19, 2009
Filed:
Aug 17, 2007
Appl. No.:
11/893662
Inventors:
Albert M. Cavallaro - Durham NH, US
George W. Mortimer - Park Forest IL, US
Dennis S. Holt - Manchester NH, US
Assignee:
OSRAM SYLVANIA INC. - Danvers MA
International Classification:
H01J 5/48
US Classification:
31331801, 313483, 439226
Abstract:
A special purpose lamp () (SPL) and a socket () therefore, the SPL () having a light source (), a base () connected to the light source. The base () has electrical connectors () and a negative key (). The socket () includes a pocket () for receiving the base (), receptors () for receiving the electrical connectors () and a positive keyway () for receiving the negative key (). In a preferred embodiment, the base () has a portion () that is substantially rectangular in cross-section and the negative key () is associated with a corner () of the portion (). Lamps so constructed can fit older sockets while older lamps will not fit the sockets of the invention.