Lamp assembly

• US 5,339,233 A
• Filed: 05/12/1993
• Issued: 08/16/1994
• Est. Priority Date: 05/12/1993
• Status: Expired due to Fees

• Current Assignee: Roger Yang
• Original Assignee: Roger Yang
• Inventors: Yang, Roger
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US08/061,585
• Time in Patent Office: 461 Days
• Field of Search: 362/345, 362/402, 362/413, 362/414, 362/426, 362/427
• US Class Current: 362/402
• CPC Class Codes: F16M 11/10 around a horizontal axis F16M11/12 takes precedence
• CPC Class Codes: F16M 11/2064 for tilting and panning F16M11/2078 takes precedence
• CPC Class Codes: F16M 2200/044 for balancing rotational movement of the undercarriage
• 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 21/26 Pivoted arms

Abstract

A lamp assembly including a mid-angle trapezoidal open frame having four corners pivotably connected to an upper arm, an upper wiring tube, a lower arm, and a lower wiring tube, a triple-terminal connecting frame pivotably connected to the upper arm and the upper wiring tube to hold a lamp shade, swivel device revolvably fastened to an axle holder on a lamp stand to hold the lower arm and the lower wiring tube, a first retaining spring assembly to adjustably hold the lower arm and the lower wiring tube in a desired angle, and a second retaining spring assembly to adjustably hold the upper arm and the upper wiring tube in a desired angle.

Claims

1. A lamp assembly comprising:

a lamp stand;

an axle holder detachably fastened to said lamp stand by screws, said axle holder having an axle hole in a top surface;

a swivel device having a stub bottom shaft revolvably fastened to said axle hole on said axle holder, and an arched upright support, said arched upright support comprising a bevel frame obliquely extended upwards at one side;

a lamp shade having holes for dissipation of heat and a socket mount to hold a lamp socket;

a mid-angle trapezoidal open frame having a pin hole on each corner thereof;

a lower arm having a first forked connector at one end pivotably connected to said arched upright support and a second forked connector at an opposite end pivotably connected to a first of said pin holes of said mid-angle trapezoidal open frame;

a lower wiring tube having a bottom end pivotably connected to said bevel frame of said swivel device by a connecting member and a top end pivotably connected to a second of said pin holes of said mid-angle trapezoidal open frame;

a first retaining device to adjustably hold said lower arm and said lower wiring tube to said swivel device in a desired angle, said first retaining device comprising a stop loop fastened to said lower arm around said lower wiring tube, a spring coil sleeved on said lower wiring tube and stopped between a fixed ring and a movable ring on said lower wiring tube, the movable ring being stopped at the stop loop;

a triple-terminal connecting frame having a first terminal, a second terminal, and a third terminal, said third terminal being fixed to said lamp shade;

an upper arm having a first forked connector at one end pivotably connected to a fourth of said pin holes of said mid-angle trapezoidal open frame and a second forked connector pivotably connected to said first terminal of said triple-terminal connecting frame;

an upper wiring tube having a bottom end pivotably connected to a third of said pin holes of said mid-angle trapezoidal open frame by a connecting member and a top end pivotably connected to said second terminal of said triple-terminal connecting frame by a connecting member; and

a second retaining device to adjustably hold said upper arm and said upper wiring tube to said lower arm and said lower wiring tube in a desired angle, said second retaining device comprising a stop loop fastened to said upper arm around said upper wiring tube, a spring coil sleeved on said upper wiring tube and stopped between a fixed ring and a movable ring on said second retaining device being stopped at the stop loop on said upper arm.

2. The lamp assembly of claim 1 wherein:

said axle holder is fixed to a wall so that the lamp assembly is used as a wall lamp.

3. The lamp assembly of claim 1 wherein:

said axle holder is fixed to a desk so that the lamp assembly is used as a desk lamp.