US4607839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snow ski machine
Assignee: Individual
•
Filing: 1983-03-04
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Granted: 1986-08-26
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Expires: 2003-03-04
Abstract
Abstract The snow ski machine is a snow ski exerciser and teaching aid device which simulates the total motion of downhill parallel skiing minus forward motion consisting of two parallel simulated skis resting on a swivel near the skier's feet with said swivel being a pivot between the skis and a cart which follows two parallel rails horizontally moving from side to side by means of the shifting and transfer of the skier's weight with said cart pulling against two springs mounted on the center front and center back of the cart while the front of the skis rest unattached in guides which follow the angle of the skis on a pivot as the skier moves on the skiing device from side to side.
Inventors
- 👤 Mark M. Knudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:50
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/18; A63B22/00; A63B22/16
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
265 words
A snow ski machine which serves as an exercise device and a snow ski training device comprising: (a) a main support frame having a central axis aligned generally from front to rear of the device; (b) at least one track-like secondary support means mounted substantially perpendicular to the main support frame/axis, the support means being tiltable from side to side about the main axis; (c) a movable cart supported on the track-like support means and movable thereon from one side of the main axis to the other; (d) resilient means connected between the main support frame/axis and the movable cart to urge the cart to a central position over the main support frame/axis on the track-like support means; (e) a pair of assimilated skis pivotally mounted in substantially side by side position on the said cart; (f) a front ski guide means mounted on the main support frame/axis at a position removed from the secondary support means including guides to slidably maintain the assimilated skis in parallel position relative to each other when the cart is moved upon the track-like support means; and (g) surface means on each ski to receive a foot of a person using the device to support the weight of the person, the movable cart being movable from one side of the main support frame/axis to the other side of the main support frame/axis, responsively to shifts in the center of weight distribution of the person, while being progressively resisted by the resilient means at a greater distance from the main support frame/axis, in assimilation of down hill parallel snow skiing.
Claim 2
Dependent Claim
265 words
A snow ski machine which serves as an exercise device and a snow ski training device comprising: (a) a main support frame having a central axis aligned generally from front to rear of the device; (b) at least one track-like secondary support means mounted substantially perpendicular to the main support frame/axis, the support means being tiltable from side to side about the main axis; (c) a movable cart supported on the track-like support means and movable thereon from one side of the main axis to the other; (d) resilient means connected between the main support frame/axis and the movable cart to urge the cart to a central position over the main support frame/axis on the track-like support means; (e) a pair of assimilated skis pivotally mounted in substantially side by side position on the said cart; (f) a front ski guide means mounted on the main support frame/axis at a position removed from the secondary support means including guides to slidably maintain the assimilated skis in parallel position relative to each other when the cart is moved upon the track-like support means; and (g) surface means on each ski to receive a foot of a person using the device to support the weight of the person, the movable cart being movable from one side of the main support frame/axis to the other side of the main support frame/axis, responsively to shifts in the center of weight distribution of the person, while being progressively resisted by the resilient means at a greater distance from the main support frame/axis, in assimilation of down hill parallel snow skiing.
Claim 3
Dependent Claim
85 words
The apparatus of claim 1 in which the main support frame is a horizontal shaft serving as a support and horizontal axis for both the perpendicular at least one parallel track, which is centered near the rear of the main support frame, and a ski guide support means, centered near the front of said main support frame; with the at least one track, and the ski guide support means tiltable together relative to the position of the movable cart on the at least one track.
Claim 4
Dependent Claim
59 words
The apparatus of claim 2 in which the at least one track is mounted perpendicularly over and near the rear of the main support frame, making it easily removable for easy storage and having vertically adjustable feet located at each end determining the angle of tilt, the track and ski guides support means assumes across the main support frame.
Claim 5
Dependent Claim
26 words
The apparatus of claim 1 in which the movable cart travels along the track from side to side by means of contoured wheels fitting the track.
Claim 6
Dependent Claim
24 words
The apparatus of claim 1 in which each of the resilient means between the main support frame and the movable cart consists of springs.
Claim 7
Dependent Claim
20 words
The apparatus of claim 1 in which the two assimilated skis pivot on a vertical axis on the movable cart.
Claim 8
Dependent Claim
29 words
Apparatus of claim 6 in which the vertical axis between the pivot of the assimilated skis and the movable cart is located near the rear of the assimilated skis.
Claim 9
Dependent Claim
36 words
The apparatus of claim 1 in which footpads are provided on the skis, made of a pliable non-skid material allowing a users feet to horizontally pivot on the right and left edges of each foot independently.
Claim 10
Dependent Claim
94 words
The apparatus of claim 1 in which boot clamp boards are provided on the surface means on top of the skis, each having an adjustable clamp to accomodate different size ski boots and each foot clamp board extending out past the front of the ski boot to allow for a forward lean to the posture of the user, and to allow the boot clamp boards to have freedom to pivot on their left and right edges, and also allowing the user the freedom to step off the skis in case he loses his balance.
Claim 11
Dependent Claim
56 words
The apparatus of claim 1 in which the ski guides support the front section of the assimilated skis, keeping the skis parallel and allowing the skis to slide forward and backward through the ski guides, while the ski guides maintain the ever changing angles of the assimilated skis, while the snow ski machine is in operation.
Claim 12
Dependent Claim
42 words
The apparatus of claim 10 in which the ski guide support means may be moved forward or backward and attached at different positions along the main support frame, increasing or decreasing the potential angulation between the skis and the main support frame.
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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) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |