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 Title: |
US3580344:
STAIR-NEGOTIATING WHEEL CHAIR OR AN IRREGULAR-TERRAIN-NEGOTIATING VEHICLE
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| Country: |
US United States of America
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| Inventor: |
Floyd, Johnnie E.; Austin, TX 78704
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| Assignee: |
None
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| Published / Filed: |
1971-05-25
/ 1968-12-24
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| Application Number: |
US1968000786674
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| IPC Code: |
Advanced:
A61G 5/06;
Core:
A61G 5/00;
IPC-7:
B62D 57/02;
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| ECLA Code: |
A61G5/06A; A61G5/06B2;
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| U.S. Class: |
Current:
180/008.2;
280/005.26;
Original:
180/8-A;
280/005.26;
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| Field of Search: |
180/008,8.01,5.26
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| Priority Number: |
| 1968-12-24 |
US1968000786674 |
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| Abstract: |
A vehicle including a variable-length central frame upon which is pivotally and rotatably mounted multiple wheel assemblies. A central propelling means powering the wheel assemblies. A central propelling means powering the wheel assemblies through a central differential operably connected to individual planetary gear set differential wheel transmissions driving individual spider arm wheel assemblies which rotate the peripheral wheels and/or spider-arms as the need demands to climb or descend stairs, negotiate uneven terrain, and execute various maneuvers. The operator preselects through a central control a desired maneuver or function. The vehicle senses the most appropriate mechanical function and performs the maneuver by the optimum safe means.
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| Attorney, Agent or Firm: |
Hodges, Jr, Willard J. ;
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| Primary / Asst. Examiners: |
Friaglia, Leo;
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| Family: |
None
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First Claim:
Show all 11 claims |
1. An uneven-terrain-negotiating vehicle:
- a. a frame having a front portion and a rear portion,
- b. a central control means mounted on said frame,
- c. power means mounted on said frame,
- d. a multiplicity of wheel transmissions mounted adjacent to periphery of said frame constructed and arranged so as to have at least one wheel transmission mounted on the front portion of said frame and at least one wheel transmission mounted on the rear portion of said frame,
- e. a central differential means operably interconnected to said power means and said wheel transmissions, said differential constructed and arranged to differentially supply rotating force to said wheel transmission mounted on the front portion of said frame and said wheel transmission mounted on the rear portion of said frame,
- f. a braking means operably associated with said central differential adapted to selectively retard the output of said differential to a wheel transmission,
- g. wheel assemblies mounted for rotation on each said wheel transmission including peripheral wheels and spider arms, and
- h. control means including selective clutching means operably integrated with each said wheel transmission selectively imparting rotating force to peripheral wheels or spider arms through a planetary gear set differential
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
Show drawing descriptions
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| Description: |
Show description
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| Forward References: |
Show 59 U.S. patent(s) that reference this one
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