Retractable device for a desk lamp

• US 5,101,332 A
• Filed: 04/30/1991
• Issued: 03/31/1992
• Est. Priority Date: 04/30/1991
• Status: Expired due to Fees

• Current Assignee: Wang Y. Hsia
• Original Assignee: Wang Y. Hsia
• Inventors: Hsia, Wang Y.
• Primary Examiner(s): Lazarus, Ira S.
• Assistant Examiner(s): Hagarman, Sue
• Application Number:
  US07/693,605
• Time in Patent Office: 336 Days
• Field of Search: 362/401, 362/410, 362/412, 362/413, 362/414, 362/418, 362/419, 362/431
• US Class Current: 362/401
• CPC Class Codes: F21S 6/00 Lighting devices intended to be free-standing F21S9/00, F21S10/00, F21S13/12 take precedence lighting devices specially adapted to be transported from place to place, e.g. lighting devices carried on wheeled supports F21L; details of supports for lighting devices F21V21/00
• CPC Class Codes: F21V 21/22 telescopic
• CPC Class Codes: F21V 21/26 Pivoted arms

Abstract

This invention relates to a retractable device for a desk lamp and in particular to one which including a tubular cylindrical casing having an end for connecting with an appropriate position of the desk lamp, a piston rod provided with an outer end for connecting with an appropriate position of the desk lamp and extending into the cylindrical casing, an annular ring fixedly mounted within the cylindrical casing for receiving a first rubber ring, a cap engaged with the other end of the tubular cylindrical casing, a plug mounted at the other end of the tubular cylindrical casing, and a second rubber ring disposed between the cap and the plug.

Claims

1. A retractable device for a desk lamp comprising:

a tubular cylindrical casing having an end for connecting with an appropriate position of said desk lamp;

a piston rod provided with an outer end for connecting with an appropriate position of the desk lamp and extending into said cylindrical casing;

an annular ring fixedly mounted within said cylinddrical casing for receiving a first rubber ring;

a cap engaged with the other end of said tubular cylindrical casing;

a plug mounted at the other end of said tubular cylindrical casing; and

a second rubber ring disposed between said cap and said plug.