Lamp with removable base and replaceable bulb capsule

• US 5,465,025 A
• Filed: 05/10/1993
• Issued: 11/07/1995
• Est. Priority Date: 05/10/1993
• Status: Expired due to Fees

• Current Assignee: RCS Industries, Inc.
• Original Assignee: Litertronics International Incorporated
• Inventors: Hendrickson, Thomas S.
• Primary Examiner(s): O'Shea, Sandra L.
• Assistant Examiner(s): Patel, Ashok
• Application Number:
  US08/059,777
• Time in Patent Office: 911 Days
• Field of Search: 313/378, 313/50, 313/51, 313/113, 313/318.09, 313/318.10, 313/318.11, 313/318.12, 362/226, 362/310, 362/448, 362/455, 362/440, 362/441, 362/368, 439/602, 439/613, 439/615, 439/616, 439/617
• US Class Current: 313/318.09
• CPC Class Codes: F21V 17/06 the fastening being onto or by the lampholder
• CPC Class Codes: F21V 19/0005 of sources having contact pins, wires or blades, e.g. pinch sealed lamp F21V19/001 takes precedence
• CPC Class Codes: H01R 33/09 for baseless lamp bulb
• CPC Class Codes: H01R 33/94 Holders formed as intermediate parts for linking a counter-part to a coupling part

Abstract

A lamp has a globe with an open rear portion encircled by a mounting collar. A removable base structure includes a base member with a cylindrical wall telescopically receiving the mounting collar therein, with pins on the collar latching in J-shaped slots on the base. A ceramic socket is received in a cup-shaped socket holder having an annular flange fixed to the base member. The holder has an aperture through which a replaceable bulb capsule can be received so that its wire terminal leads can be plugged directly into the socket. A wave spring is retained on the holder flange for engagement with a flange on the mounting collar to bias the assembly in its latched condition, with the socket holder and the bulb capsule extending into the globe through the open end thereof.

Claims

1. A lamp for use with a replaceable bulb capsule, comprising:

a globe having a light transmitting front portion and a rear portion defining an opening thereinto, first mounting means discrete from said globe and mounted on said rear portion and including a hole aligned with said opening, and removable base structure including a socket constructed to removably receive the replaceable bulb capsule, said base structure including second mounting means for telescopically receiving said rear portion therein for engagement with said first mounting means in a mounted condition in which said socket and the replaceable bulb capsule received therein extend through said opening and said hole into said globe.

2. The lamp of claim 1, wherein said first mounting means comprises a cylindrical member encircling said rear portion of said globe, said second mounting means including a cylindrical portion of said base structure.

3. The lamp of claim 1, wherein said base structure includes an externally threaded portion.

4. The lamp of claim 1, wherein said globe includes a reflectorized portion.

5. The lamp of claim 4, wherein said reflectorized portion is frustoconical in shape.

6. The lamp of claim 1, wherein said globe is formed of glass.

7. A lamp for use with a replaceable bulb capsule, comprising:

a globe having a light transmitting front portion and a rear portion defining an opening thereinto, mounting means on said rear portion including a hole aligned with said opening, removable base structure including a socket holder having a cylindrical side wall with opposed ends and an end wall closing said side wall at one end thereof with said side wall being open at the other end thereof, said end wall having an aperture therein, a socket received in said holder and through said open end aligned with said aperture to removably receive the replaceable bulb capsule through said aperture, means for retaining said socket in said holder, and means for retaining said removable base structure on said mounting means in a mounted condition in which said socket holder and the replaceable bulb capsule received in said socket extend through said opening and said hole into said globe.

8. The lamp of claim 7, wherein said socket includes a ceramic body having electrically conductive contact portions therein.

9. The lamp of claim 7, wherein said base structure includes a base member having a cylindrical wall discrete from said socket holder and fixed thereto.

10. The lamp of claim 9 wherein said socket holder includes an annular flange extending laterally outwardly therefrom and fixed to said cylindrical wall of said base member.

11. The lamp of claim 10, wherein said means for retaining said socket includes tabs struck from said flange and engageable with said socket.

12. A lamp for use with a replaceable bulb capsule, comprising:

a globe having a light transmitting front portion and a rear portion defining an opening thereinto, mounting means on said rear portion including a hole aligned with said opening, removable base structure including a socket constructed to removably receive the replaceable bulb capsule, latch means accommodating movement of said base structure into a latched condition in latching engagement with said mounting means, and resilient bias means engageable with said mounting means and said base structure when said base structure is latched in its mounted condition for resiliently holding said latch means in the latched condition.

13. The lamp of claim 12, wherein said bias means includes an annular wave spring.

14. The lamp of claim 13, wherein said base structure includes an annular flange against which said spring is seated, and retaining means on said flange for retaining said spring thereon.

15. The lamp of claim 14 wherein said retaining means includes an upstanding cylindrical side wall with an annular inturned lip having an inner diameter less than the outer diameter of the wave spring.

16. The lamp of claim 14, wherein said base structure includes a base member and a socket holder discrete from said base member and receiving said socket therein, said flange being unitary with said socket holder and fixed to said base member.

17. The lamp of claim 14, wherein said mounting means includes an annular flange which cooperates with said annular flange on said base structure for compressing said wave spring therebetween when said base structure is latched in its mounted condition on said mounting means.

18. A lamp comprising:

a globe having a light transmitting front portion and a rear portion defining an opening thereinto, first mounting means discrete from said globe and mounted on said rear portion and including a hole aligned with said opening, removable base structure including a socket, and a replaceable bulb capsule including a light-transmitting envelope and at least one wire terminal lead projecting therefrom for removable insertion directly in said socket, and said base structure including second mounting means telescopically receiving said rear portion therein for engagement with said first mounting means in a mounted condition in which said socket and said bulb capsule received in said socket extend through said opening and said hole into said globe.

19. The lamp of claim 18, wherein said socket includes two holes therein, said bulb capsule having two wire terminal leads respectively receivable in said socket holes.

20. The lamp of claim 18 wherein said capsule envelope is filled with gases under superatmospheric pressure.