US3912290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible sled
Assignee: Individual
•
Filing: 1974-06-03
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Granted: 1975-10-14
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Expires: 1994-06-03
Abstract
Abstract A plurality of end aligned elongated sled sections are pivotally secured together at their adjacent ends for relative angular displacement about horizontal transverse axes between first operative positions with the sections in end aligned position and second relatively folded positions with the sled sections disposed in vertically stacked relation. Suitable structure is provided for releasably securing the sled sections in their operative positions and the sled sections include opposite side runner structures which, when the sled sections are in their operative positions, coact to form opposite side elongated runner assemblies extending the full length of the sled construction. The front and rear ends of the sled construction include opposite side vertically spaced support wheel mounting structures and opposite side wheel assemblies are provided for the front and rear ends of the sled construction, with each wheel assembly being selectively supportable from the corresponding vertically spaced wheel mounting structures. When the wheel assemblies are mounted from the lower set of wheel mounting structures, the lower peripheral portions of the wheel assemblies project considerably below the runner assemblies of the sled construction and when the wheel assemblies are supported from the upper set of wheel mounting structures, the lower peripheral portions of the wheel assemblies are spaced above the under surface portions of the runner assemblies. Also, the lower wheel mounting structures at the forward end of the sled are defined on opposite ends of an axle member extending transversely of the front sled section and having its mid-portion supported from the front sled section for oscillation about a vertical axis, the axle being disposed in a horizontal plane spaced above the runner assemblies.
Inventors
- 👤 Robert S Rich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:50
CPC Classifications
B; B62; B62B; B62B13/00; B62B13/16; B62B13/18; B62B3/00; B62B3/02; B62B2202/00; B62B2202/42
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
284 words
A sled construction including three end aligned elongated sled sections pivotally secured together at their adjacent ends for relative angular displacement about a horizontal transverse axis between first operative positions with said sections in end aligned position and second relatively folded positions with said sled sections disposed in vertically stacked relation, said sled sections each including a pair of lower opposite side longitudinally extending runner members, the central portions of the opposite end sections of said sled construction including opposite side support wheel means, said support wheel means and said end sections including coacting means for selectively supporting said wheel means in the upper and lower positions with the lower peripheral portions of said wheel means spaced above and below, respectively, the lower under surface portions of said runner members, said sled sections each including a pair of opposite side longitudinal bar members spaced above and supported from the corresponding runner members with bar members on each side of the sled disposed in opposing end-to-end relation when said sled sections are disposed in end aligned positions, said sled sections each including a plurality of upwardly concave arcuate braces extending and secured between corresponding longitudinally spaced portions of the corresponding bar members, said sled construction including front, intermediate and rear sled sections, the front ends of one pair of members of said intermediate sled sections being pivotally supported from the adjacent ends of the corresponding members of the adjacent sled section and the rear ends of the other pair of members of said intermediate sled section and the adjacent ends of the corresponding members of the adjacent sled section being pivotally supported from the adjacent ends of the corresponding members of the adjacent sled section.
Claim 2
Dependent Claim
284 words
A sled construction including three end aligned elongated sled sections pivotally secured together at their adjacent ends for relative angular displacement about a horizontal transverse axis between first operative positions with said sections in end aligned position and second relatively folded positions with said sled sections disposed in vertically stacked relation, said sled sections each including a pair of lower opposite side longitudinally extending runner members, the central portions of the opposite end sections of said sled construction including opposite side support wheel means, said support wheel means and said end sections including coacting means for selectively supporting said wheel means in the upper and lower positions with the lower peripheral portions of said wheel means spaced above and below, respectively, the lower under surface portions of said runner members, said sled sections each including a pair of opposite side longitudinal bar members spaced above and supported from the corresponding runner members with bar members on each side of the sled disposed in opposing end-to-end relation when said sled sections are disposed in end aligned positions, said sled sections each including a plurality of upwardly concave arcuate braces extending and secured between corresponding longitudinally spaced portions of the corresponding bar members, said sled construction including front, intermediate and rear sled sections, the front ends of one pair of members of said intermediate sled sections being pivotally supported from the adjacent ends of the corresponding members of the adjacent sled section and the rear ends of the other pair of members of said intermediate sled section and the adjacent ends of the corresponding members of the adjacent sled section being pivotally supported from the adjacent ends of the corresponding members of the adjacent sled section.
Claim 3
Dependent Claim
123 words
The combination of claim 1 wherein said coacting means for selectively supporting the wheel means on one end sled section in upper and lower positions includes a transverse axle member oscillatably supported from said one end sled section for oscillation about a vertical axis with said axle spaced above the lower under surfaces of said one end sled section and means for removably journalling the corresponding wheel means from the opposite ends of said axle, said mounting means including threaded blind bores in the ends of said axle member and a pair of stub axles including one pair of corresponding ends removably threaded in said blind bores, said wheel means being journalled on the other pair of corresponding ends of said stub axles.
Claim 4
Dependent Claim
68 words
The combination of claim 1 including coacting latch means releasably securing the rear ends of said one pair of members of said intermediate sled section and the adjacent ends of the corresponding members of the adjacent sled section together and the front ends of the other pair of members of said intermediate sled section and the adjacent ends of the corresponding members of the adjacent sled section together.
Claim 5
Dependent Claim
21 words
The combination of claim 3 wherein said one pair of members of said intermediate sled section comprise the runner members thereof.
Claim 6
Dependent Claim
154 words
The combination of claim 1 wherein said coacting means for selectively suppoRting the wheel means on one end sled section in upper and lower positions includes a transverse axle member oscillatably supported from said one end sled section for oscillation about a vertical axis with said axle spaced above the lower under surfaces of said one end sled section and mounting means for removably journalling the corresponding wheel means from the opposite ends of said axle member, said one sled section wheel means being disposed in the lower positions thereof when journalled from said axle member, said mounting means and one sled section including means operative to removably rotatably support the wheel means of said first sled section from the latter about fixed horizontal transverse axes with the last-mentioned wheel means in the upper positions and the lower peripheral portions thereof spaced outwardly of and only slightly above the corresponding lower under surface portions.
Claim 7
Dependent Claim
54 words
The combination of claim 5 wherein said mounting means includes threaded blind bores in the ends of said axle member and a pair of stub axles including one pair of corresponding ends removably threaded in said blind bores, said wheel means being journalled on the other pair of corresponding ends of said stub axles.
Claim 8
Dependent Claim
48 words
The combination of claim 6 wherein the opposite ends of said axle are spaced inwardly of the opposite sides of said one end sled section and said other pair of ends of said stub axles are disposed outwardly of the opposite sides of said one end sled section.
Claim 9
Dependent Claim
28 words
The combination of claim 5 wherein said one end sled section comprises the front section, the forward ends of the runner members of said front section curving upwardly.
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) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |