Did You Know...
...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7341463 | Extension socket structure An extension socket structure includes a positioning sleeve, which has a front face with an opening disposed thereon and a rear face having a plurality of positioning slots disposed thereon, and an extension socket being inserted in the positioning sleeve for a sock... | 03/11/2008 |
| 6010360 | Lamp socket assembly for use with heat lamps A lamp socket assembly having a groove in the cap which matches a ridge in the cover to assist in tightening the assembly. A typical heat lamp assembly has a husk holding the socket which holds the heat lamp and a cap is affixed to the top of the husk. Th... | 01/04/2000 |
| 5593318 | Electrical receptacle for photoelectric controller An electrical receptacle assembly for attachment to a luminaire housing comprises a housing defining a plurality of contact seating channels extending therethrough along axes parallel to a contact member insertion axis, electrical contact members being se... | 01/14/1997 |
| 5328391 | Contact pin subassembly A contact pin subassembly including a plurality of contact pins, a contact pin holder which holds the contact pins and which is provided with a plurality of insulation ring portions in which the associated contact pins are slidably fitted, and springs whi... | 07/12/1994 |
| 4871327 | Combined electrical grounding and mechanical locking means for ceiling mounted device An apparatus is provided for simultaneously electrically grounding and mechanical securing an electric device to an overhead support which comprises a generally downwardly depending downrod attached to the support; a coupling for engaging the lower end po... | 10/03/1989 |
| 4294503 | Locking means for a lamp holder Locking means for a lampholder having an opening to receive a threaded component. A locking member is captively carried by the lampholder and is mounted for limited movement in a direction normal to the axis of the opening, and the locking member has at l... | 10/13/1981 |
