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 Title: |
US5746282:
Power-assisted cart
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Fujiwara, Shigeki; Osaka, Japan
Yamashita, Hideki; Osaka, Japan
Maeda, Hiroshi; Daito, Japan
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| Assignee: |
Matsushita Electric Works, Ltd., Osaka, Japan
other patents from MATSUSHITA ELECTRIC WORKS, LTD. (358985) (approx. 1,141)
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| Published / Filed: |
1998-05-05
/ 1996-04-12
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| Application Number: |
US1996000629945
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| IPC Code: |
Advanced:
B60K 26/02;
B60L 11/18;
B60L 15/00;
B62B 3/00;
B62B 3/14;
B62B 5/00;
B62B 5/06;
B62D 51/04;
IPC-7:
B62D 6/00;
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| ECLA Code: |
B60K26/02; B60L11/18A; B60L15/00; B62B3/14P; B62B5/00P; B62B5/06; B62D51/04; L62B5/00P6F; L60L200/26; Y02T10/70; Y02T10/70B;
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| U.S. Class: |
Current:
180/006.2;
180/006.5;
Original:
180/006.2;
180/006.5;
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| Field of Search: |
180/6.2,6.28,6.44,6.48,6.5,6.26,6.24,7.1,19.1,19.2,19.3,3.5,170
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| Priority Number: |
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| Abstract: |
A power-assisted cart includes a wheeled platform for supporting a load thereon; driving wheels mounted on the wheeled platform for, when driven, moving the wheeled platform; a drive unit for driving the driving wheels; an operating unit which may be in the form of a handle mounted on the wheeled platform for receiving an external force applied thereto when the cart is desired to be moved; a force detector for detecting a magnitude and direction of the external force applied to the operating unit; and a control for generating to the drive unit an output substantially proportional to the external force detected by the force detector.
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| Attorney, Agent or Firm: |
Kenyon & Kenyon ;
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| Primary / Asst. Examiners: |
Avila, Stephen;
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Family: |
Show 6 known family members
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First Claim:
Show all 22 claims |
What is claimed is:
1. A power-assisted cart comprising:
- a wheeled platform for supporting a load thereon;
- a first driving wheel mounted on the wheeled platform for, when driven, moving the wheeled platform;
- a drive means for driving the first driving wheel;
- an operating member mounted on the wheeled platform for receiving an external force applied thereto when the cart is desired to be moved;
- a force detector for detecting a magnitude and direction of the external force applied to the operating member to thereby detect thrust and yawing forces applied to the power-assisted cart; and
- a control means for controlling the drive means to apply a torque to the first driving wheel substantially proportional to the external force detected by the force detector so that the external force, when added to a force resulting from the torque applied to the first driving wheel results in a desired total force being applied to the cart.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 17 U.S. patent(s) that reference this one
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