US3695736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless-track-supported vehicle
Assignee: Kusan Inc
•
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 04:47
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)
US534442A
Cited
US1688927A
Cited
CH32510A
Cited
US1105862A
Cited
US1478321A
Cited
US1760423A
Cited
US2644691A
Cited
US3523385A
Cited
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 |