Patent US3695736A successfully refreshed from Google Patents.
US3695736A
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Endless-track-supported vehicle
Assignee: Kusan Inc
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Filing: 1970-09-03
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Granted: 1972-10-03
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Expires: 1990-09-03
Abstract
Abstract A supporting endless track for vehicles of any type comprising a plurality of ground engaging balls or rollers which are confined in a race and which successively move into ground engagement during vehicle movement.
Inventors
- 👤 Arnold E Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:01
CPC Classifications
B; B63; B63H; B63H1/00; B63H1/38; B62; B62D; B62D55/00; B62D55/06; B63H1/30; B63H1/34
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
87 words
An endless track capable of supporting a load comprising, in combination, an endless confining structure defining a race having a bottom opening including inturned flanges, and a plurality of unconnected, rotatable spherical members confined in but not filling said race by said flanges for universal, independent rotation therein and rotatable into successive ground engaging track-supporting position through said opening upon movement of the track, said confining structure including a slope for gravity movement of said spherical members therealong and being transparent for observation of said rotatable members.
Claim 2
Dependent Claim
87 words
An endless track capable of supporting a load comprising, in combination, an endless confining structure defining a race having a bottom opening including inturned flanges, and a plurality of unconnected, rotatable spherical members confined in but not filling said race by said flanges for universal, independent rotation therein and rotatable into successive ground engaging track-supporting position through said opening upon movement of the track, said confining structure including a slope for gravity movement of said spherical members therealong and being transparent for observation of said rotatable members.
Claim 3
Dependent Claim
15 words
The combination recited in claim 1 wherein said confining structure is formed by a channel.
Claim 4
Dependent Claim
27 words
The combination recited in claim 1 wherein said confining structure includes a second, oppositely disposed slope for the gravity movement of said rotatable members in either direction.
Claim 5
Dependent Claim
17 words
The combination recited in claim 1; and a platform mounted on the track for supporting a load.
Claim 6
Dependent Claim
27 words
The combination recited in claim 1; a second endless track spaced from the recited track, and a load supporting platform connecting and mounted on the two tracks.
References Cited (Backward Citations)
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |