IP Library Granted Patent US 8,253,281
Granted Patent B2
US 8,253,281 · App. 12/394,328 · Granted Aug 28, 2012

Energy harvesting apparatus incorporated into shock absorber

Assignee: GM Global Technology Operations LLC
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 8,253,281
App. No.
12/394,328
Granted
Aug 28, 2012
Kind
B2
Abstract

An energy harvesting apparatus, for deployment on a vehicle, comprises a vehicle shock absorber including a dust tube, and a damper tube telescopically mounted within the dust tube and configured for oscillating translational movement with respect thereto. A magnet is fixedly coupled to one of the dust tube or the damper tube, and a coil is fixedly coupled to the other of the dust tube or the damper tube to achieve relative translational movement between the magnet and the coil to induce a current in the coil.

Claims (21)

1. An energy harvesting apparatus, for deployment on a vehicle, the apparatus comprising:

a vehicle shock absorber, comprising:

a dust tube;

a damper tube telescopically mounted within the dust tube and configured for oscillating translational movement within the dust tube;

a magnet fixedly coupled to the dust tube;

a coil fixedly coupled to the damper tube to achieve relative translational movement between the magnet and the coil inducing a current in the coil; and

an energy converter coupled to the coil and mounted on the damper tube, the energy converter comprising a rectifier mounted on the damper tube.

2. An apparatus according claim 1 further comprising an energy storage device coupled to the energy converter.

3. An apparatus according to claim 2 wherein the energy storage device is a battery.

4. An apparatus according to claim 2 wherein the energy storage device is a capacitor.

5. An energy harvesting apparatus, for deployment on a vehicle, the apparatus comprising:

a vehicle shock absorber, comprising:

a dust tube, the dust tube configured as a cylinder with an inner surface and an opposite facing, outer surface;

a damper tube telescopically mounted within the dust tube and configured for oscillating translational movement within the dust tube;

a magnet fixedly coupled on the damper tube;

a coil fixedly coupled on the inner surface of the dust tube to achieve relative translational movement between the magnet and the coil; and

an energy converter coupled to the coil and mounted on the outer surface of the dust tube, the energy converter comprising a rectifier mounted on the outer surface of the dust tube.

6. An apparatus according to claim 5 wherein the magnet is fixedly coupled to an outer surface of the damper tube.

7. An apparatus according to claim 5 further comprising an energy storage device coupled to the energy converter.

8. An apparatus according to claim 7 wherein the energy storage device is a battery.

9. An apparatus according to claim 7 wherein the energy storage device is a capacitor.

Assignments (8)
RELEASE OF SECURITY INTEREST Recorded Nov 7, 2014
From: WILMINGTON TRUST COMPANY
To: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Reel/Frame 034185/0789 →
CHANGE OF NAME Recorded Feb 10, 2011
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Reel/Frame 025781/0245 →
SECURITY AGREEMENT Recorded Nov 8, 2010
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: WILMINGTON TRUST COMPANY
Reel/Frame 025324/0515 →
RELEASE OF SECURITY INTEREST Recorded Nov 5, 2010
From: UAW RETIREE MEDICAL BENEFITS TRUST
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 025315/0091 →
RELEASE OF SECURITY INTEREST Recorded Nov 4, 2010
From: UNITED STATES DEPARTMENT OF THE TREASURY
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 025246/0056 →
SECURITY AGREEMENT Recorded Aug 28, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UAW RETIREE MEDICAL BENEFITS TRUST
Reel/Frame 023162/0048 →
SECURITY AGREEMENT Recorded Aug 27, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UNITED STATES DEPARTMENT OF THE TREASURY
Reel/Frame 023201/0118 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 12, 2009
From: NAMUDURI, CHANDRA S.; LI, YUNJUN; TALTY, TIMOTHY J.; ELLIOTT, ROBERT B.; MCMAHON, NANCY
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 022670/0045 →
Continuity (1)
Related Publication 20100219798A1 · Sep 2, 2010