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 Title: |
US5921338:
Personal transporter having multiple independent wheel drive
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Edmondson, Jonathan L.; Cashmere, WA
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| Assignee: |
Robin L. Edmondson, Rainier, WA
Roger Edmondson, Rainier, WA
other patents from ROBIN L. EDMONDSON (755537) (approx. 1)
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| Published / Filed: |
1999-07-13
/ 1997-08-11
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| Application Number: |
US1997000909501
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| IPC Code: |
Advanced:
B60G 21/045;
B60K 1/04;
B60K 7/00;
B60K 17/04;
B60K 17/356;
B60K 20/04;
B60K 23/08;
B60K 26/00;
B62D 5/04;
IPC-7:
B60K 1/02;
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| ECLA Code: |
B60K26/00; B60G21/045; B60K1/04; B60K7/00E; B60K17/04B; B60K17/356; B60K20/04; B60K23/08; L60G200/300; L60G202/132; L60G206/605; L60G300/24; L60G300/50; L60K7/00S; L60K7/00W;
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| U.S. Class: |
Current:
180/065.51;
180/006.5;
180/065.1;
280/124.11;
280/124.111;
Original:
180/065.5;
180/065.1;
180/006.5;
280/124.11;
280/124.111;
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| Field of Search: |
180/6.5,242,243,65.1,65.6
280/124,106,124.11,124.111
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| Priority Number: |
| 1997-08-11 |
US1997000909501 |
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| Abstract: |
A multiple wheel drive personal transporter includes a lightweight skeletal frame based on a single cylindrical fore-aft beam to which front and rear axle, motor drive and wheel assemblies are connected. Each wheel is driven by a battery powered electrical motor and transmission gear sprocket chain drive. All wheels, or by user control option just front wheels, are powered on in parallel and energized by PWM drive circuitry. Throttle, forward/reverse, steering and other controls are available on a single flight stick. The seat is mounted over the beam near the rear, with front and rear battery trays and the user's weight distributed for optimum stability and traction and the beam is made of telescoped tubular sections incorporating a seat tilt limiting differential that responds to differential rotation of the front and rear wheel assemblies as the transporter traverses uneven ground.
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| Attorney, Agent or Firm: |
Christensen O'Connor PLLCJohnson & Kindness ;
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| Primary / Asst. Examiners: |
Mai, Lanna; Cuff, Michael
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| Maintenance Status: |
E1 Expired Check current status
CC Certificate of Correction issued
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| INPADOC Legal Status: |
Show legal status actions
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| Family: |
None
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First Claim:
Show all 14 claims |
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A motor powered, wheeled personal transporter, comprising:
- a frame having a front longitudinally extending cylindrical beam attached to a front wheel assembly and a rear longitudinally extending cylindrical beam attached to a rear wheel assembly;
- bushing means connecting said front longitudinally extending cylindrical beam and said rear longitudinally extending cylindrical beam, said bushing means allowing independent rotation of said front longitudinally extending cylindrical mean and of said rear longitudinally extending cylindrical beam;
- seat means attached to said bushing means; and
- belt means attached to, and interwoven between, said front longitudinally extending cylindrical beam and said rear longitudinally extending cylindrical beam such that relative rotation between said front wheel assembly and said rear wheel assembly causes relative rotation between said front longitudinally extending cylindrical beam and said rear longitudinally extending cylindrical beam to rotate said seat means a lesser amount than the relative rotation between said front wheel assembly and said rear wheel assembly.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 39 U.S. patent(s) that reference this one
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