Patent JPS57157302A successfully refreshed from Google Patents.
Patent US20050137602A1 successfully refreshed from Google Patents.
US3568748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient wheel
Assignee: National Aeronautics and Space Administration
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Filing: 1969-02-17
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Granted: 1971-03-09
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Expires: 1989-02-17
Abstract
Abstract A resilient wheel comprising a woven wire tire clamped to the rim of a conical wheel disc. The tread surface of the wire tire has tread units comprising abrasive coated strips clamped to the wire tire and arranged in a herringbone pattern around the tread area of the tire. A relatively rigid annular frame is provided inside the wire tire that limits deflection of the tire under load.
Inventors
- 👤 John N Calandro
- 👤 Norman J James
- 👤 Ferenc Pavlics
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:53
CPC Classifications
B; B60; B60C; B60C7/00; B60C7/10; B60C7/14; B60C11/00; B60C11/14; B60C11/18; B60C11/185; B60C27/00; B60C27/06; B60C27/16; B60C27/18; B60C7/06; B60C7/24; B60C7/26
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
111 words
A resilient wheel comprising: a substantially rigid support disposed centrally of said wheel and defining a circular periphery; a tire encircling said circular periphery of said support and being attached to said support; said tire comprising a resilient wire shell, the circumferential surface of which comprises a circular tread surface; diagonally positioned tread units attached to said tread surface of said wire shell, said units being arranged in a regular pattern; said tread units each comprising a plurality of adjacent read strips; and said strips of said tread units being pivotally connected to the adjacent strip of said unit whereby said strips may pivot when said wire shell flexes under load.
Claim 2
Dependent Claim
111 words
A resilient wheel comprising: a substantially rigid support disposed centrally of said wheel and defining a circular periphery; a tire encircling said circular periphery of said support and being attached to said support; said tire comprising a resilient wire shell, the circumferential surface of which comprises a circular tread surface; diagonally positioned tread units attached to said tread surface of said wire shell, said units being arranged in a regular pattern; said tread units each comprising a plurality of adjacent read strips; and said strips of said tread units being pivotally connected to the adjacent strip of said unit whereby said strips may pivot when said wire shell flexes under load.
Claim 3
Dependent Claim
31 words
The invention as defined in claim 1 wherein said pivotal connections between said adjacent tread strips comprises a fastener having a portion extending through said strips and through said wire shell.
Claim 4
Dependent Claim
41 words
The invention as defined in claim 1 including a relatively rigid frame connected to and extending around said periphery of said support and disposed within said tire whereby said frame limits the amount of the deflection motion of said resilient shell.
Claim 5
Dependent Claim
34 words
The invention as defined in claim 3 wherein said frame comprises a circular ring member extending around said support, said member being joined to a series of curved straps arranged transversely of said member.
Claim 6
Dependent Claim
20 words
The invention as defined in claim 1 wherein said tread strips comprise a polyimide material coated with an abrasive substance.
Claim 7
Dependent Claim
22 words
The invention as defined in claim 5 wherein said polyimide material comprises Vespal and said abrasive substance comprises a silicon carbide grit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |