US5842533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-legged walking apparatus
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1996-06-14
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Granted: 1998-12-01
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Expires: 2016-06-14
Abstract
Abstract A multi-legged walking apparatus includes a first plurality of legs having a large weight support capacity and a second plurality of legs providing a large thrust force. The first plurality of legs provide a smaller thrust force than the thrust force of the second plurality of legs, and the second plurality of legs have a smaller weight support capacity than the weight support capacity of the first plurality of legs. The overall weight of the apparatus is supported substantially by the first plurality of legs, and the overall thrust of the apparatus is provided substantially by the second plurality of legs.
Inventors
- 👤 Hiroki Takeuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:23
CPC Classifications
B; B62; B62D; B62D57/00; B62D57/02
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
98 words
A multi-legged walking apparatus comprising: a first plurality of legs having a large weight support capacity and a second plurality of legs providing a large thrust force, in which the first plurality of leg provides a smaller thrust force than the thrust force of the second plurality of legs and the second plurality of legs has a smaller weight support capacity than the weight support capacity of the first plurality of legs, overall apparatus weight is supported substantially by the first plurality of legs and overall and apparatus thrust is provided substantially by the second plurality of legs.
Claim 2
Dependent Claim
98 words
A multi-legged walking apparatus comprising: a first plurality of legs having a large weight support capacity and a second plurality of legs providing a large thrust force, in which the first plurality of leg provides a smaller thrust force than the thrust force of the second plurality of legs and the second plurality of legs has a smaller weight support capacity than the weight support capacity of the first plurality of legs, overall apparatus weight is supported substantially by the first plurality of legs and overall and apparatus thrust is provided substantially by the second plurality of legs.
Claim 3
Dependent Claim
22 words
An apparatus according to claim 1, wherein a center of gravity of the apparatus is positioned above the first plurality of legs.
Claim 4
Dependent Claim
23 words
An apparatus according to claim 2 that further includes a counterbalance for adjusting a position of the center of gravity of the apparatus.
Claim 5
Dependent Claim
41 words
An apparatus according to claim 1, wherein the first plurality of legs are front legs and the second plurality of legs are back legs, and the front and back legs are each attached to an apparatus frame by a hip joint.
Claim 6
Dependent Claim
25 words
An apparatus according to claim 4, wherein each front leg is comprised by a lower link and an upper link connected by a knee joint.
Claim 7
Dependent Claim
26 words
An apparatus according to claim 5 that includes a rotary actuator with a brake on each knee joint for controlling a position of the knee joint.
Claim 8
Dependent Claim
21 words
An apparatus according to claim 5 that includes a linear actuator on each knee joint for controlling a front leg length.
Claim 9
Dependent Claim
26 words
An apparatus according to claim 4, wherein each back leg is comprised by a lower link and an upper link rotatably connected by a knee joint.
Claim 10
Dependent Claim
20 words
An apparatus according to claim 8 that includes a rotary actuator on each knee joint for generating a thrust force.
Claim 11
Dependent Claim
25 words
An apparatus according to claim 4 that includes a rotary actuator on each front leg hip joint for controlling a position of the hip joint.
Claim 12
Dependent Claim
22 words
An apparatus according to claim 4 that includes a rotary actuator on each back leg hip joint for generating a thrust force.
Claim 13
Dependent Claim
47 words
A multi-legged walking apparatus having front and back legs in which the front legs each have a weight support mechanism, the back legs each have an actuator for generating a thrust force, and a center of gravity of the apparatus is located more toward the front legs.
Claim 14
Dependent Claim
47 words
A multi-legged walking apparatus having front and back legs in which the front legs each have a weight support mechanism, the back legs each have an actuator for generating a thrust force, and a center of gravity of the apparatus is located more toward the front legs.
Claim 15
Dependent Claim
20 words
An apparatus according to claim 12 that further includes a counterbalance for adjusting the position of the center of gravity.
Claim 16
Dependent Claim
21 words
An apparatus according to claim 12, wherein the front legs are each attached to an apparatus frame by a hip joint.
Claim 17
Dependent Claim
21 words
An apparatus according to claim 12, wherein the back legs are each attached to an apparatus frame by a hip joint.
Claim 18
Dependent Claim
26 words
An apparatus according to claim 12, wherein each front leg is comprised by a lower link and an upper link rotatably connected by a knee joint.
Claim 19
Dependent Claim
26 words
An apparatus according to claim 16 that includes a rotary actuator with a brake on each knee joint for controlling a position of the knee joint.
Claim 20
Dependent Claim
21 words
An apparatus according to claim 16 that includes a linear actuator on each knee joint for controlling a front leg length.
Claim 21
Dependent Claim
26 words
An apparatus according to claim 12, wherein each back leg is comprised by a lower link and an upper link rotatably connected by a knee joint.
Claim 22
Dependent Claim
20 words
An apparatus according to claim 19 that includes a rotary actuator on each knee joint for generating a thrust force.
Claim 23
Dependent Claim
35 words
An apparatus according to claim 12, wherein the weight support mechanism is comprised by a knee joint having a rotary actuator with a brake for locking the upper and lower links comprising each front leg.
Claim 24
Dependent Claim
35 words
An apparatus according to claim 12, wherein the weight support mechanism is comprised by a knee joint having a linear actuator with a brake for locking the upper and lower links comprising each front leg.
Claim 25
Dependent Claim
25 words
An apparatus according to claim 14 that includes a rotary actuator on each front leg hip joint for controlling a position of the hip joint.
Claim 26
Dependent Claim
25 words
An apparatus according to claim 14 that includes a rotary actuator on each back leg hip joint for controlling a position of the hip joint.
References Cited (Backward Citations)
US4203423A
Cited
US4662465A
Cited
JPS61139567A
Cited
JPS62251284A
Cited
US4834200A
Cited
US5127484A
Cited
US5121805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-11-30 | 2002-06-01 | 2002-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-30 | 2006-06-01 | 2006-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-30 | 2010-06-01 | 2010-12-01 | $7700.00 | Window Closed / Lapsed |