US3734523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slalom sled
Assignee: Individual
•
Filing: 1970-09-11
•
Granted: 1973-05-22
•
Expires: 1990-09-11
Abstract
Abstract A sled including a platform body mounted on a chassis having parallel spaced runners. The sled is provided with a steering mechanism incorporating a rack and pinion drive for displacing the runners laterally to the path of travel for directional control. A brake system is also incorporated into the sled and is optionally operated by a hand lever or a foot lever mechanically linked to a brake member, the latter being adapted to contact the terrain surface and thereby retard the movement of the sled. The runners are suitable for traversing ice covered surfaces and other surface traversing means such as snow skis may be selectively attached to the runners for specific surfaces. The runners and skis have a curved design with a longitudinal keel and dependent parallel edges so as to reduce frictional drag and to improve the lateral stability of the sled.
Inventors
- 👤 L Field
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:42
CPC Classifications
B; B62; B62B; B62B13/00; B62B13/02; B62B13/06; B62B13/08; B62B13/12; B62B13/125
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
249 words
A sled capable of navigating over various terrain surfaces with directional and speed control, said sled comprising a chassis, a sled body supported by said chassis, spaced parallel runners for supporting the sled in a traversing position, steering means for displacing a forward portion of the runners laterally relative to the sled body to change the sled traversing direction, brake means having alternate modes of operation for controlling sled speed, including a rotatably mounted brake frame member, biasing means for urging the brake frame member to an idle position free of the terrain surface, a pivotally attached hand brake lever, a brake tie bar mechanically linking the brake frame member and the hand brake lever to provide one mode of brake operation whereby pivotal movement of the hand brake lever acts to rotate the brake frame against the biasing means and into braking contact with the terrain surface, a foot engagable member rotatably secured to the sled, a foot brake lever interconnecting the foot engagable member and the hand brake lever, said foot brake lever including guide means for controlling the extent of movement of the foot brake lever, check means, said check means restricting rotation has been inserted therefor, same line, of the hand brake lever in one direction only whereby movement of the foot engagable member provides a second mode of brake operation, and displaces the hand brake lever to rotate the brake frame member against the biasing means and into braking contact with the terrain surface.
Claim 2
Dependent Claim
249 words
A sled capable of navigating over various terrain surfaces with directional and speed control, said sled comprising a chassis, a sled body supported by said chassis, spaced parallel runners for supporting the sled in a traversing position, steering means for displacing a forward portion of the runners laterally relative to the sled body to change the sled traversing direction, brake means having alternate modes of operation for controlling sled speed, including a rotatably mounted brake frame member, biasing means for urging the brake frame member to an idle position free of the terrain surface, a pivotally attached hand brake lever, a brake tie bar mechanically linking the brake frame member and the hand brake lever to provide one mode of brake operation whereby pivotal movement of the hand brake lever acts to rotate the brake frame against the biasing means and into braking contact with the terrain surface, a foot engagable member rotatably secured to the sled, a foot brake lever interconnecting the foot engagable member and the hand brake lever, said foot brake lever including guide means for controlling the extent of movement of the foot brake lever, check means, said check means restricting rotation has been inserted therefor, same line, of the hand brake lever in one direction only whereby movement of the foot engagable member provides a second mode of brake operation, and displaces the hand brake lever to rotate the brake frame member against the biasing means and into braking contact with the terrain surface.
Claim 3
Dependent Claim
27 words
A sled as claimed in claim 1 wherein the check means comprises a protrusion on the foot brake lever for abutting contact with the hand brake lever.
Claim 4
Dependent Claim
30 words
A sled as claimed in claim 2, wherein the guide means includes a guide member for slidingly accommodating the foot brake lever and for defining one extent of its displacement.
Claim 5
Dependent Claim
39 words
A sled as claimed in claim 1, wherein the brake frame member includes speed retarding means having two spaced depending leg members, each of said leg members terminating in an acuminated end for penetrating engagement of the terrain surface.
Claim 6
Dependent Claim
39 words
A sled as claimed in claim 1, wherein the brake frame member includes speed retarding means having two spaced depending leg members and a brake shoe removably attachable to said leg members for frictional contact with the terrain surface.
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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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |