Patent US3583722A successfully refreshed from Google Patents.
US3583722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible bobsled
Assignee: Individual
•
Filing: 1969-05-15
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Granted: 1971-06-08
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Expires: 1989-05-15
Abstract
Abstract A seating platform is made of forward, intermediate and rear sections suitably hinged so that the sections may be folded with the undersides of the forward and rear sections facing one another. Two bunker plates are fixed to the sections and runners are detachably mounted on the lateral ends of the bunker plates. The detachable mounting means for the runners include mating slots and tongues with flexible pins locking the tongues in the slots. The sections are held in the seating position by mating cams and grooves between the intermediate and forward and rear sections and are locked in place by L-shaped bars slidably received in brackets mounted on the underside of the intermediate section. Pontoons suitable for water-skiing or snow skis may be detachably mounted on the runners. When folded the sections form a carrying case in which the detachable runners may be carried. A bobsled runner is provided with a replaceable shoe mounted in apertures in the runner.
Inventors
- 👤 Isidor R Jacobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:21
CPC Classifications
B; B62; B62B; B62B13/00; B62B13/16; A; A63; A63C; A63C17/00; A63C17/01; A63C17/018
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
134 words
A collapsible sled comprising: an elongated seating-platform including forward, rear and intermediate sections each having a seating surface for supporting a rider and all aligned in the same plane when said sections are extended for use; forward and rear platform supporting means secured to the undersides of said forward and rear sections; restraining means for holding said sections in extended, seating-platform positions, and first and second hinge means for securing said intermediate section to each of the forward and rear sections respectively for foldable movement of said forward and rear sections toward one another into a folded position with their undersides facing each other and wherein the separation of said first and second hinge means by said intermediate section provides a storage space between said forward and rear sections when in said folded position.
Claim 2
Dependent Claim
134 words
A collapsible sled comprising: an elongated seating-platform including forward, rear and intermediate sections each having a seating surface for supporting a rider and all aligned in the same plane when said sections are extended for use; forward and rear platform supporting means secured to the undersides of said forward and rear sections; restraining means for holding said sections in extended, seating-platform positions, and first and second hinge means for securing said intermediate section to each of the forward and rear sections respectively for foldable movement of said forward and rear sections toward one another into a folded position with their undersides facing each other and wherein the separation of said first and second hinge means by said intermediate section provides a storage space between said forward and rear sections when in said folded position.
Claim 3
Dependent Claim
22 words
The sled defined by claim 1 wherein said restraining means includes L-shaped bars slidably mounted in brackets seCured to said intermediate section.
Claim 4
Dependent Claim
18 words
The sled defined by claim 1 wherein said platform supporting means each include a set of detachable runners.
Claim 5
Dependent Claim
29 words
The sled defined by claim 3 wherein said platform supporting means each include a rectangular bunker plate, said runners being secured to the lateral ends of said bunker plates.
Claim 6
Dependent Claim
14 words
The sled defined by claim 3 further including pontoons secured to said detachable runners.
Claim 7
Dependent Claim
26 words
The sled defined by claim 3 further including snow skis having upstanding guides slidable over said runners and means for locking said skis on said runners.
Claim 8
Dependent Claim
93 words
A collapsible sled comprising: an elongated seating platform including forward, rear and intermediate sections; forward and rear platform supporting means secured to the undersides of said forward and rear sections; restraining means for holding said sections in extended, seating-platform positions, said restraining means including L-shaped bars slidably mounted in brackets secured to said intermediate section and interdigitating grooves and cams on said sections; and hinge means for securing said sections together for foldable movement of said forward and rear sections toward one another into a folded position with their undersides facing each other.
Claim 9
Dependent Claim
93 words
A collapsible sled comprising: an elongated seating platform including forward, rear and intermediate sections; forward and rear platform supporting means secured to the undersides of said forward and rear sections; restraining means for holding said sections in extended, seating-platform positions, said restraining means including L-shaped bars slidably mounted in brackets secured to said intermediate section and interdigitating grooves and cams on said sections; and hinge means for securing said sections together for foldable movement of said forward and rear sections toward one another into a folded position with their undersides facing each other.
Claim 10
Dependent Claim
35 words
The sled defined by claim 7 wherein said platform supporting means each include a detachable runner and further including means on the undersides of said forward and rear sections for carrying said runners when detached.
Claim 11
Dependent Claim
95 words
A collapsible sled comprising: an elongated seating-platform including forward, rear and intermediate sections; forward and rear platform supporting means secured to the undersides of said forward and rear sections and each including a set of detachable runners, said forward and rear sections having runner clips secured to their undersides for carrying said runners when detached; restraining means for holding said sections in extended, seating-platform positions, and hinge means for securing said sections together for foldable movement of said forward and rear sections towards one another into a folded position with their undersides facing each other.
Claim 12
Dependent Claim
95 words
A collapsible sled comprising: an elongated seating-platform including forward, rear and intermediate sections; forward and rear platform supporting means secured to the undersides of said forward and rear sections and each including a set of detachable runners, said forward and rear sections having runner clips secured to their undersides for carrying said runners when detached; restraining means for holding said sections in extended, seating-platform positions, and hinge means for securing said sections together for foldable movement of said forward and rear sections towards one another into a folded position with their undersides facing each other.
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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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |