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 Title: |
US4685693:
Upright wheelchair
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Vadjunec, Carl F.; Youngstown, OH 44509
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| Assignee: |
None
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| Published / Filed: |
1987-08-11
/ 1986-09-16
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| Application Number: |
US1986000908010
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| IPC Code: |
Advanced:
A61G 5/00;
A61G 5/14;
A61G 5/10;
Core:
more...
IPC-7:
A47C 13/00;
B62D 51/00;
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| U.S. Class: |
Current:
280/250.1;
297/DIG.004;
Original:
280/242.WC;
297/DIG.4;
005/061;
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| Field of Search: |
280/242 WC,249,648
297/DIG. 4
180/074
005/431
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| Priority Number: |
| 1986-09-16 |
US1986000908010 |
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| Abstract: |
An upright wheelchair that allows the user to be in an upright standing position in the chair and self-propel the chair from that position by use of auxiliary drive wheels inner-connected with the main wheels. An enlarged chair back provides vertical support for the user and is pivoted for horizontal positioning with a fold-out support.
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| Attorney, Agent or Firm: |
Harpman & Harpman ;
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| Primary / Asst. Examiners: |
Love, John J.; McGiehan, Donn
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| Maintenance Status: |
E2 Expired Check current status
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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 5 claims |
I claim:
1. An upright wheelchair having a main support frame, with upstanding side frame configurations, main support wheels and multiple directional wheels on said main support frame, a back body support pivotally secured between said upstanding side frame configurations, inner-drive wheels secured in spaced relation to said main support wheels, secondary drive wheels vertically aligned with said inner-drive wheels and rotatably engaging same in reverse direction and said main support wheels, means on said back body support for locking same in vertical position, means on said back body support for supporting same in horizontal position, means for supporting a chair user in upright position on said back body support, secondary means for securing the user on said back body support, means for locking said main support wheels, inner-drive wheels and said secondary drive wheels.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
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| Description: |
Show description
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| Forward References: |
Show 52 U.S. patent(s) that reference this one
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