IP Library Granted Patent US 8,201,985
Granted Patent B2
US 8,201,985 · App. 13/153,167 · Granted Jun 19, 2012

Light bulb utilizing a replaceable LED light source

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Quick Facts
Patent No.
US 8,201,985
App. No.
13/153,167
Granted
Jun 19, 2012
Kind
B2
Abstract

The present invention is a light bulb featuring a removable LED light source. The preferred source being a lighting source with a three dimensional lead frame as disclosed in the parent applications to this application. Control circuitry is included to convert electrical power into power usable by the LEDs.

Claims (14)

1. A light source, comprising:

a replaceable LED unit having an interlocking structure element;

a socket having a corresponding interlocking structure element that mates with the interlocking structure element of the replaceable LED unit;

a base supporting the socket, the base capable of interfacing with a lighting fixture; and

operable electrical connections between the base and the replaceable LED unit.

2. The light source recited in claim 1 , wherein the interlocking structure element and the corresponding interlocking structure element are screw threads.

3. The light source recited in claim 1 , wherein the replaceable LED unit comprises a plurality of LEDs.

4. The light source recited in claim 3 , wherein the plurality of LEDs are arranged on the replaceable LED unit to direct light in different directions with respect to the light source.

5. The light source recited in claim 4 , wherein the replaceable LED unit comprises a polygonal profile with n faces, n being an integer larger than 2, and wherein at least one of the plurality of LEDs are arranged on at least one face of the replaceable LED unit.

6. The light source recited in claim 1 , further comprising a removable cover that attaches to the base and at least partially covers the removable LED unit.

7. The light source recited in claim 6 , wherein the removable cover permits transmission of light through the cover.

8. The light source recited in claim 7 , wherein when the removable cover is removed a user has access to the replaceable LED unit to remove the replaceable LED unit and install a new replaceable LED unit.

9. The light source recited in claim 8 , wherein the removable cover comprises interlocking threads that interface with corresponding interlocking threads on the base.

10. The light source recited in claim 1 , wherein the operable electrical connections comprise control circuitry electrically connected to the base to convert the electrical current from AC to DC.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 3, 2021
From: EPISTAR CORPORATION
To: SATCO PRODUCTS, INC.
Reel/Frame 058009/0072 →
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE'S ADDRESS PREVIOUSLY RECORDED ON REEL 036709 FRAME 0596. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Oct 6, 2015
From: CAO GROUP, INC.
To: EPISTAR CORPORATION
Reel/Frame 036771/0838 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 2, 2015
From: CAO GROUP, INC.
To: EPISTAR CORPORATION
Reel/Frame 036709/0596 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 3, 2011
From: CAO, DENSEN
To: CAO GROUP, INC.
Reel/Frame 026389/0530 →