US4838564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steerable roller skate
Assignee: Individual
•
Filing: 1984-10-01
•
Granted: 1989-06-13
•
Expires: 2004-10-01
Abstract
Abstract Roller skates provided with essentially spherical wheels mounted on trucks pivotally connected to a sole plate with longitudinally offset skate wheel axes and yieldable resilient neutralizing bias accommodating steering truck displacement in response to skater leaning.
Inventors
- 👤 Patrick T. Jarvis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:28
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/04; A63C17/06; A63C17/061; A63C17/064; A63C17/22; A63C17/24
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
129 words
Roller skate comprising pair of longitudinally spaced roller means mounted on longitudinally extending member, each of said roller means having a roller axis and transversely arcuate longitudinally split rolling surfaces diminishing tranversely outwardly in rolling radius, each of said roller means having a truck with a vertical pivotal axis outboard of a horizontal displaceably mounted axle capable of providing steering action in an arcuate path, longitudinally extending progressive rate resilient means for biasing each truck to a neutral position, and means responsive to the weight of a skater leaning on said longitudinally extending member for displacing said truck and axle against progressively increasing rate resistance of said resilient means to steer said skate in the direction of leaning, said resilient means being preloaded to resist displacement from neutral position.
Claim 2
Dependent Claim
129 words
Roller skate comprising pair of longitudinally spaced roller means mounted on longitudinally extending member, each of said roller means having a roller axis and transversely arcuate longitudinally split rolling surfaces diminishing tranversely outwardly in rolling radius, each of said roller means having a truck with a vertical pivotal axis outboard of a horizontal displaceably mounted axle capable of providing steering action in an arcuate path, longitudinally extending progressive rate resilient means for biasing each truck to a neutral position, and means responsive to the weight of a skater leaning on said longitudinally extending member for displacing said truck and axle against progressively increasing rate resistance of said resilient means to steer said skate in the direction of leaning, said resilient means being preloaded to resist displacement from neutral position.
Claim 3
Dependent Claim
18 words
Roller skate of claim 1 wherein both longitudinal spaced roller means are provided with like steering action means.
References Cited (Backward Citations)
US200186A
Cited
US103346A
Cited
GB191011727A
Cited
FR436795A
Cited
US2204280A
Cited
US2529314A
Cited
GB741159A
Cited
US2719724A
Cited
US3414280A
Cited
DE2724396A1
Cited
US4153263A
Cited
DE2903174A1
Cited
DE2938316A1
Cited
US4294456A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-12 | 1992-12-12 | 1993-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-12 | 1996-12-12 | 1997-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-12 | 2000-12-12 | 2001-06-13 | $7700.00 | Window Closed / Lapsed |