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 Title: |
US4790400:
Stepping vehicle
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Sheeter, Eric; Fulford Harbour, British Colombia, Canada
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| Assignee: |
None
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| Published / Filed: |
1988-12-13
/ 1987-07-20
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| Application Number: |
US1987000075475
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| IPC Code: |
Advanced:
B62D 57/00;
E02F 9/04;
IPC-7:
B62D 57/02;
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| ECLA Code: |
B62D57/00; E02F9/04;
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| U.S. Class: |
Current:
180/008.6;
180/008.1;
180/008.3;
Original:
180/008.6;
180/008.1;
180/008.3;
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| Field of Search: |
180/8.1,8.2,8.3,8.4,8.5,8.6
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| Priority Number: |
| 1986-07-24 |
GB1986000018044 |
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| Abstract: |
A vehicle 1 comprises an upper mounting 2 which is a hollow beam pivotally attached via pivot means 4 to a lower mounting 3 which is also a hollow beam. A work platform 15 is fixed on to the upper mounting for translational movement with the mountings. Inner beams 5, 6, 10 and 11 are slidable within the outer beams 2 and 3 and have attached to each of their ends yokes, which in turn have attached at each of their ends legs 8 and 13. The legs have feet 9 and 14 and are telescopically extendible, so that the weight of the vehicle can be supported alternately on each set of legs i.e. on legs 8 or legs 13. By causing all the inner beams to slide in the outer beams simultaneously while the vehicle is supported on one set of legs and then transferring the weight to the other set of legs and causing the inner beams to slide in the opposite direction, the vehicle can "walk". The work platform can move forward continuously. By rotating the upper and lower mountings relative to each other the vehicle can be steered and caused to travel in any direction.
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| Attorney, Agent or Firm: |
Sughrue, Mion, Zinn, Macpeak and Seas ;
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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
Family Legal Status Report
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| Designated Country: |
BE DE ES FR GB IT NL SE
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| Family: |
Show 6 known family members
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First Claim:
Show all 16 claims |
I claim:
1. A vehicle comprising:
- a first substantially horizontal mounting;
- a second substantially horizontal mounting beneath the first mounting;
- pivot means by which the 1st and 2nd mountings are pivotally interconnected;
- means for rotating the mountings relative to each other about the pivot through at least about 45°;
- substantially horizontal, first and second mounting extensions, each comprising front and rear portions and slidably mounted on, respectively, the first and second mountings for longitudinal motion relative to the mountings;
- means for reciprocally sliding each substantially horizontal mounting extension longitudinally relative to its associated mounting, and
- first and second sets of supports for alternately supporting the mountings above the ground and that include ground engaging members and that are connected, respectively, to the first and second mounting extensions at the ends of the extensions distant from the mountings,
- means for raising and lowering the ground engaging members of one set above or below the ground engaging members of the other set whereby each set of supports may alternately serve as a load bearing set of supports that support the mounting above the ground and the ground engaging members of which are in a load bearing contact with the ground,
- and in which a work platform is secured on the first or second mountings for substantially horizontal movement with the mountings and the pivot,
- and the means for sliding the mounting extensions comprise
- means for sliding the mounting extension connected to the load bearing supports in a first direction relative to its associated mounting and thereby moving the pivot in a second opposite, direction relative to the load bearing supports, and
- means for simultaneously sliding the other mounting extension relative to its associated mounting in the said second direction.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 54 U.S. patent(s) that reference this one
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