US3838647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means and techniques for moving objects particularly useful in water skiing
Assignee: Individual
•
Filing: 1973-04-16
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Granted: 1974-10-01
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Expires: 1993-04-16
Abstract
Abstract A towing system in which a moving traction means has pickup means thereon movable into engagement with one end of an elongated element, such element being capable of transmitting tension forces but being incapable of transmitting compressive forces and having a body attached to its other end. Such element is maintained taut preparatory to and during the instant of initial connection between the traction means and elongated element so as to extend tautly at a right angle with respect to direction of movement of such traction means whereby the body is accelerated smoothly and without substantial jerk from zero speed to the speed of the traction means.
Inventors
- 👤 B Rixen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:26
CPC Classifications
B; B63; B63B; B63B34/00; B63B34/60; B63B34/63
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
194 words
In a system wherein it is desired to accelerate a body from a substantially stationary condition to a speed commensurate with the speed of a moving traction means, means defining a path of movement of said traction means, an elongated element having one of its ends attachable to said means with said body being attachable to the other end of said element, said element at the time of its attachment to said traction means extending substantially perpendicular to said path, said traction means being a self-propelled traction vehicle running on its said path of movement on a track and wherein said body is a towed vehicle moving under tractional influence exercised by said traction vehicle on said elongated element on a curved line towards said path of movement of said traction vehicle, said curved line taking such a course that the instantaneous direction of movement of said towed vehicle predominantly corresponds to the instantaneous direction of said elongated element and wherein said curved line of said towed vehicle and said track of said traction vehicle ultimately extends in the same direction once said towed vehicle has substantially reached the speed of said traction vehicle.
Claim 2
Dependent Claim
194 words
In a system wherein it is desired to accelerate a body from a substantially stationary condition to a speed commensurate with the speed of a moving traction means, means defining a path of movement of said traction means, an elongated element having one of its ends attachable to said means with said body being attachable to the other end of said element, said element at the time of its attachment to said traction means extending substantially perpendicular to said path, said traction means being a self-propelled traction vehicle running on its said path of movement on a track and wherein said body is a towed vehicle moving under tractional influence exercised by said traction vehicle on said elongated element on a curved line towards said path of movement of said traction vehicle, said curved line taking such a course that the instantaneous direction of movement of said towed vehicle predominantly corresponds to the instantaneous direction of said elongated element and wherein said curved line of said towed vehicle and said track of said traction vehicle ultimately extends in the same direction once said towed vehicle has substantially reached the speed of said traction vehicle.
Claim 3
Dependent Claim
38 words
In an system as set forth in claim 1, in which said body is a track-bound towed vehicle, too, and wherein said curved line has been constructed so as to form a curved track for said towed vehicle.
Claim 4
Dependent Claim
33 words
In a system as set forth in claims 2, in which said track of the traction vehicle is straight for a distance which is at leAst equal to the length of said element.
Claim 5
Dependent Claim
52 words
In a system as set forth in claim 2 wherein said towed vehicle is pulled toward said traction means by the length of said elongated element once said towed vehicle has substantially reached the speed of said traction vehicle so that said towed vehicle may be directly coupled to said traction means.
Claim 6
Dependent Claim
47 words
In a system as set forth in claim 2 in which said tracks of said traction vehicle and of said towed vehicle are rail means arranged in a plane and in which there are guide means at the lower part of said vehicles engaging with said tracks.
Claim 7
Dependent Claim
118 words
In a system as set forth in claim 2 wherein said towed vehicle at the initial instant of the transmission of power thereto from said traction means is away from the point of connection between said elongated element and said traction means and wherein the longitudinal axis of said towed vehicle then runs in the traveling direction at said instant in the direction of said elongated element at an angle of at least zero but at most 45* therewith, said curved track being prolonged by at least the length of said towed vehicle beyond its point of connection with said elongated element and running in the range of this prolongation in substantially the same direction as said axis.
Claim 8
Dependent Claim
52 words
In a system as set forth in claims 1, wherein said towed vehicle is pulled towards said traction vehicle by the length of said elongated element once said towed vehicle has substantially reached the speed of said traction vehicle so that said towed vehicle may be directly coupled to said traction vehicle.
Claim 9
Dependent Claim
40 words
A system as set forth in claim 1 in which said curved line of said towed vehicle and said track of said traction vehicle are the same once said towed vehicle has substantially reached the speed of said traction vehicle.
Claim 10
Dependent Claim
43 words
A system as set forth in claim 1 in which said curved line of said towed vehicle and said track of said traction vehicle extend generally parallel to each other once said towed vehicle has substantially reached the speed of said traction vehicle.
References Cited (Backward Citations)
US3190646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |