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US3635490A Expired / Lapsed US ⏱️ 0.0 years remaining

One-piece plastic sled

Assignee: Individual
•
Filing: 1969-08-21
•
Granted: 1972-01-18
•
Expires: 1989-08-21
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Abstract

Abstract A snowsled molded of one piece of a plastic material wherein the runners are so designed as to accommodate various types of snow conditions. The surfaces of the runners are provided with secondary ribs so that when someone is seated upon the sled, it will cause the runners to tilt outwardly so that it will run upon this secondary runner if the snow conditions are hard. Under softer snow conditions, the runners are forced inwardly so that the sled runs upon the larger flat portions of the running surfaces thereby providing a larger running surface so that the sled stays higher up in the snow. By this tilting action together with the configuration of the runners, the sled thus presents the best running surface automatically no matter what the snow conditions are. In addition, the runners are curved so as to permit the sled to be easily maneuvered.

Inventors

  • 👤 John E Demaree
  • 👤 Michael S Demaree

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 07:59
CPC Classifications
B; B62; B62B; B62B13/00; B62B13/02; B62B13/06

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 64 words
A one-piece snowsled comprising: a centrally located longitudinally extending seat area; a pair of runners longitudinally disposed on each side of said sEat area, depending support means positioning said seat area above said runners; said runners having a wide horizontally disposed running surface, each running surface having an inner edge which is curved gradually upwardly and outwardly near the front portion of the sled.
Claim 2
Dependent Claim 64 words
A one-piece snowsled comprising: a centrally located longitudinally extending seat area; a pair of runners longitudinally disposed on each side of said sEat area, depending support means positioning said seat area above said runners; said runners having a wide horizontally disposed running surface, each running surface having an inner edge which is curved gradually upwardly and outwardly near the front portion of the sled.
Claim 3
Dependent Claim 22 words
The article described in claim 1 wherein said runners further include secondary runners disposed along the innermost edge of said horizontal runners.
Claim 4
Dependent Claim 24 words
The article described in claim 1 wherein a secondary rib is disposed along the innermost edge of the runner and along said curved edge.
Claim 5
Dependent Claim 24 words
The article described in claim 3 wherein the curved edge of said runners begins at a point near the longitudinal center of the runners.
Claim 6
Dependent Claim 39 words
The article described in claim 3 further including another secondary rib disposed along the outermost edge of the horizontal running surface, said rib extending from the sternmost end of each runner a distance less than the entire runner length.
Claim 7
Dependent Claim 50 words
A sled of the type described in claim 1 wherein: said seat area, said depending support means and said runners are constructed of a pliable material whereby the application of a load to said seat area deforms said sled to cause the outermost edges of said runners to tilt upwardly.
Claim 8
Dependent Claim 31 words
A sled of the type described in claim 1 wherein said seat area has a plurality of transversely disposed ribs, said ribs extending at least partially down said depending support means.

References Cited (Backward Citations)

US2829902A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-01-17 1975-07-19 1976-01-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-01-17 1979-07-19 1980-01-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-01-17 1983-07-19 1984-01-18 $7700.00 Window Closed / Lapsed

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