Projective lamp

• US 5,136,489 A
• Filed: 06/18/1991
• Issued: 08/04/1992
• Est. Priority Date: 06/18/1991
• Status: Expired due to Fees

• Current Assignee: Gary Hsieh, Hsiang T. Cheng
• Original Assignee: Gary Hsieh, Hsiang T. Cheng
• Inventors: Hsieh, Gary, Cheng, Hsiang T.
• Primary Examiner(s): Ostrager, Allen M.
• Assistant Examiner(s): Hagarman, Sue
• Application Number:
  US07/717,055
• Time in Patent Office: 413 Days
• Field of Search: 362/125, 362/218, 362/220, 362/226, 362/285, 362/294, 362/372, 362/373, 362/418, 362/419, 362/424, 362/427
• US Class Current: 362/294
• CPC Class Codes: F21S 8/04 intended only for mounting on a ceiling or the like overhead structures F21S8/02 takes precedence; details of ceiling bases F21V21/03
• CPC Class Codes: F21V 21/22 telescopic
• CPC Class Codes: F21V 21/30 Pivoted housings or frames

Abstract

A projection lamp capable of being easily assembled to a screw socket and is both extensively and pivotally adjustable. The lamp includes a lamp housing having a conductive threaded cap an two opposite inner guiding rails, and annular member having two opposite wings capable of being slidably positioned along the guiding rails, and a lamp body pivotally connected under the annular member and having a reflective shade and a bulb electrically connected to the threaded cap.

Claims

1. A projection lamp comprising;

a) a lamp housing including a conductive threaded cap for attachment to a screw socket, two opposed inner guiding rails, and at least one guiding rail including a toothed portion;

b) an annular member including a pair of opposed wings for engaging the guiding rails and permitting the annular member to slide and be positioned along the rails, and a central hole;

c) a compartment within the lamp housing positioned between the threaded cap and the annular member for containing electrical elements;

d) a resilient member recessed within one wing for permitting the annular member to slide and be positioned along the guide rail;

e) a lamp body including a reflective shade and a bulb electrically connected to the threaded cap; and

f) a connecting member rotatably secured within the central hole of the annular member and the lamp body being pivotally connected to the connecting member.

2. A projection lamp comprising:

a) a lamp housing including a conductive threaded cap for attachment to a screw socket and two opposed inner guiding rails;

b) an annular member including two opposite wings for engaging the guiding rails and permitting the annular member to slide an be positioned along the rails, and a central hole;

c) a lamp body pivotally connected to the annular member and including a generally semispherical body housing, a ring member provided with an annular groove, a reflective shade engaged within the annular groove and extending above the ring member, and a bulb electrically connected to the threaded cap.

3. The projection lamp of claim 2 wherein each of the lamp housing, body housing and ring member includes a plurality of heat-dissipating slots formed therein.