US3224381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel for carrying electronic equipment
Assignee: HP Inc
•
Filing: 1964-03-30
•
Granted: 1965-12-21
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Expires: 1984-03-30
Abstract
No abstract record available.
Inventors
- 👤 Clyde R Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:20
CPC Classifications
H; H01; H01R; H01R41/00; B; B66; B66C; B66C7/00; B66C2700/00; B66C2700/01; B66C2700/012; B66C2700/014
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A WHEEL ADAPTED TO ROLL ON AN ELONGATED MEMBER, THE WHEEL INCLUDING A PLASTIC HUB, A FIRST ANNULAR PLASTIC WHEEL FLANGE SECURED TO ONE SIDE OF THE HUB, A SECOND ANNULAR PLASTIC WHEEL FLANGE SECURED TO THE OPPOSITE SIDE OF THE HUB SO THE FLANGES ARE SPACED APART, THE FLANGES EXTENDING AWAY FROM EACH OTHER AT A RATE DECREASING WITH DISTANCE FROM THE HUB AXIS TO FORM AN ANNULAR GROOVE AROUND THE HUB TO RECEIVE THE MEMBER, AND AN ANNULAR STRIP DISPOSED AROUND THE CENTRAL PORTION OF THE GROOVE, THE STRIP HAVING A HIGHER COEFFICIENT OF FRICTION AGAINST THE MEMBER THAN DOES THE OUTER PORTION OF THE GROOVE.
Claim 2
Dependent Claim
108 words
A WHEEL ADAPTED TO ROLL ON AN ELONGATED MEMBER, THE WHEEL INCLUDING A PLASTIC HUB, A FIRST ANNULAR PLASTIC WHEEL FLANGE SECURED TO ONE SIDE OF THE HUB, A SECOND ANNULAR PLASTIC WHEEL FLANGE SECURED TO THE OPPOSITE SIDE OF THE HUB SO THE FLANGES ARE SPACED APART, THE FLANGES EXTENDING AWAY FROM EACH OTHER AT A RATE DECREASING WITH DISTANCE FROM THE HUB AXIS TO FORM AN ANNULAR GROOVE AROUND THE HUB TO RECEIVE THE MEMBER, AND AN ANNULAR STRIP DISPOSED AROUND THE CENTRAL PORTION OF THE GROOVE, THE STRIP HAVING A HIGHER COEFFICIENT OF FRICTION AGAINST THE MEMBER THAN DOES THE OUTER PORTION OF THE GROOVE.
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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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |