US3600000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Security device for sled
Assignee: Individual
•
Filing: 1969-03-20
•
Granted: 1971-08-17
•
Expires: 1989-03-20
Abstract
Abstract A security arrangement in and for a sled of the type to be used by small children, comprising an integral or attached hump portion forcing the occupant of the sled to sit with the legs flexed thereby to eliminate the risk of fractures due to longitudinal thrusts.
Inventors
- 👤 Kjell Bergstrom
- 👤 Hakan Jorulf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:42
CPC Classifications
B; B62; B62B; B62B15/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
136 words
A plastic riding sled for children having provision for forcing the rider to sit with flexed legs to thereby reduce the risk of fractures due to longitudinal thrusts comprising: a geneRally rectangular flat bottom surface bounded by raised side, front and rear walls defining a substantially coplanar upper edge, said sidewalls extending substantially vertically from said bottom wall, said upper edge including a peripheral flange extending outwardly from said walls, and an annular rim of shock-absorbing material secured to at least a portion of said upper edge, and an arcuately curved hump secured to said bottom surface intermediate said front and rear walls, said hump curving from front to rear and extending continuously from side to side, at least a portion of said hump being corrugated to increase the friction between the hump and a rider.
Claim 2
Dependent Claim
136 words
A plastic riding sled for children having provision for forcing the rider to sit with flexed legs to thereby reduce the risk of fractures due to longitudinal thrusts comprising: a geneRally rectangular flat bottom surface bounded by raised side, front and rear walls defining a substantially coplanar upper edge, said sidewalls extending substantially vertically from said bottom wall, said upper edge including a peripheral flange extending outwardly from said walls, and an annular rim of shock-absorbing material secured to at least a portion of said upper edge, and an arcuately curved hump secured to said bottom surface intermediate said front and rear walls, said hump curving from front to rear and extending continuously from side to side, at least a portion of said hump being corrugated to increase the friction between the hump and a rider.
Claim 3
Dependent Claim
125 words
A plastic riding sled for children having provision for forcing the rider to sit with flexed legs to thereby reduce the risk of fractures due to longitudinal thrusts comprising: a generally rectangular flat bottom surface bounded by raised side, front and rear walls defining a substantially coplanar upper edge, said sidewalls extending substantially vertically from said bottom wall, said upper edge including a peripheral flange extending outwardly from said walls, and a second bottom surface overlying the full area of said flat bottom surface, said front wall, and said rear wall to define a double bottom, said second bottom surface including an arcuately curved hump intermediate said front and rear walls, said hump curving from front to rear and extending continuously from side to side.
Claim 4
Dependent Claim
125 words
A plastic riding sled for children having provision for forcing the rider to sit with flexed legs to thereby reduce the risk of fractures due to longitudinal thrusts comprising: a generally rectangular flat bottom surface bounded by raised side, front and rear walls defining a substantially coplanar upper edge, said sidewalls extending substantially vertically from said bottom wall, said upper edge including a peripheral flange extending outwardly from said walls, and a second bottom surface overlying the full area of said flat bottom surface, said front wall, and said rear wall to define a double bottom, said second bottom surface including an arcuately curved hump intermediate said front and rear walls, said hump curving from front to rear and extending continuously from side to side.
Claim 5
Dependent Claim
22 words
The sled as defined in claim 2 wherein shock-absorbing material is positioned between said second bottom surface and said flat bottom surface.
References Cited (Backward Citations)
US1530405A
Cited
US2531946A
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US2826423A
Cited
US2829902A
Cited
US3199887A
Cited
US3276784A
Cited
US3384910A
Cited
US3479046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |