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US 2008/0164665 A1Published application
Stair-climbing vehicle
AssigneeHsueh-Er Chang
InventorHsueh-Er Chang
Life of this patent
Estimating the term…
Abstract
A vehicle for carrying object can overcome stairs and special geography. Rotators having wheels with of without auxiliary wheel are used. Various combinations of rotators and auxiliary wheel are possible.
Claims11
A stair-climbing vehicle, comprising:
- a carrier;
- a shaft, said shaft being fixed at bottom of said carrier;
- two transverses, said transverses being separately and movably deposed at two ends of said shaft;
- two first rotators, each said first rotator being separately and movably deposed at an end of said transverse, said first rotator having five juts to be separately deposed with five wheels;
- two second rotators, each said second rotator being separately and movably deposed between two ends of said transverse, said second rotator having five juts to be separately deposed with five wheels
- two auxiliary wheels, each said auxiliary wheel being separately and movably deposed at another end of said transverse.
3 more elements
A stair-climbing vehicle, comprising:
- a carrier;
- two first rotators, each said first rotator being separately deposed in a direction at two sides of said carrier, said first rotator having five juts to be separately deposed with five wheels;
- two second rotators, said second rotators being separately deposed in said direction of said first rotators at two sides of said carrier, said second rotator having five juts to be separately deposed with five wheels;
- and
- two auxiliary wheel, said auxiliary wheel being separately deposed in said direction of said second rotators at two sides of said carrier.
2 more elements
A stair-climbing vehicle, comprising
- a carrier;
- a shaft, said shaft being fixed at two sides at bottom of said carrier;
- two transverses, said transverses being separately deposed at two sides in a direction of said carrier;
- two first rotators, said first rotator being separately deposed at an end of said transverse, said first rotator having five juts to be separately deposed with five wheels
- two second rotators, said second rotator being separately deposed at another end of said transverse, said second rotator having five juts to be separately deposed with five wheels;
- and
- two third rotators, said third rotator being separately deposed in said direction on said transverse, said third rotator having five juts to be separately deposed with five wheels.
4 more elements
Dependencies are inferred from the claim text.