US4194752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skateboard
Assignee: SKF GmbH
•
Filing: 1978-03-27
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Granted: 1980-03-25
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Expires: 1998-03-27
Abstract
Abstract A skateboard comprising an elongated board and a pair of trucks mounted adjacent opposite ends of the board, each having a pair of rotatable wheels. Each truck consists of a tensile elastic suspension member and a pivot support consisting of a universally movable ball and socket joint.
Inventors
- 👤 Gerhard Tilch
- 👤 Wolfgang Friedrich
- 👤 Herbert Dobhan
- 👤 Hermann Hetterich
- 👤 Peter Horling
- 👤 Sigismund Finzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:43
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/01; A63C17/011; A63C17/012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
211 words
A skateboard comprising an elongated board, a pair of trucks mounted to said board adjacent opposite ends thereof, each truck having a pair of rotatable wheels, said truck comprising a tensile elastic suspension assembly and a pivot support member, said pivot support member consisting of a universally moveble ball and socket joint, said truck formed by a pair of complementary truck sections formed of sheet metal, one of said truck sections being of Y-shaped cross section and including an axle support portion formed by the stem of the Y and angularly disposed leg sections, a second complementary truck section of V-shaped cross section and of a predetermined configuration to fit and lie between the legs of said first truck section, said truck sections being connected by welding and being provided with stiffening ribs, means defining a groove-type recess in said axle within which the legs of the second truck section engage thereby to center the axle in the axle support portion, said pivot support comprising a ball head having a depending cylindrical pin which seats in a pocket formed by the arcuately shaped projections in one leg of the first and second truck sections, said ball head engaging a spherical cup formed in a complementary shaped portion of the base plate.
Claim 2
Dependent Claim
211 words
A skateboard comprising an elongated board, a pair of trucks mounted to said board adjacent opposite ends thereof, each truck having a pair of rotatable wheels, said truck comprising a tensile elastic suspension assembly and a pivot support member, said pivot support member consisting of a universally moveble ball and socket joint, said truck formed by a pair of complementary truck sections formed of sheet metal, one of said truck sections being of Y-shaped cross section and including an axle support portion formed by the stem of the Y and angularly disposed leg sections, a second complementary truck section of V-shaped cross section and of a predetermined configuration to fit and lie between the legs of said first truck section, said truck sections being connected by welding and being provided with stiffening ribs, means defining a groove-type recess in said axle within which the legs of the second truck section engage thereby to center the axle in the axle support portion, said pivot support comprising a ball head having a depending cylindrical pin which seats in a pocket formed by the arcuately shaped projections in one leg of the first and second truck sections, said ball head engaging a spherical cup formed in a complementary shaped portion of the base plate.
References Cited (Backward Citations)
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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) | 1983-03-25 | 1983-09-24 | 1984-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-25 | 1987-09-24 | 1988-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-25 | 1991-09-24 | 1992-03-25 | $7700.00 | Window Closed / Lapsed |