US4293968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interconnected water skis
Assignee: Individual
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Filing: 1978-11-06
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Granted: 1981-10-13
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Expires: 1998-11-06
Abstract
Abstract Application of at least one slot notch or groove to or near the rear of a single or pair of towed planing boards or surfaces. Such slots or the like induce a water geyser at speed that improves the appearance and/or directional control of such boards. Such slots or the like are especially effective and practical for deep displacement type boards whose zero and low speed efficiency and stability is especially improved for paired boards or ski when such are fitted with a rigid or preferably semi-rigid connector as hereinafter described. The addition of slots or the like, and where applicable suitable connectors, to generally improve combination displacement-planing boards by: economically providing an aesthetically pleasing water spout induced at speed for planing boards, economically providing a novel and improved apparatus for establishing directional control and stability, improving the lateral stability of ski sets especially at zero and low velocities, practically reducing the bulk or required net displacement of ski sets especially at zero and low velocities and more simply providing a foot restraint.
Inventors
- 👤 Elliott M. Levine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:28
CPC Classifications
B; B63; B63B; B63B34/00; B63B34/50; B63B34/56
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
163 words
A pair of buoyant water ski components or the like and means incorporated thereto connect said components in spaced and parallel relationship with one another to form a platform, and foot engaging means on the upper surface of each of said components, said connecting means including a connector member and means detachably securing said connector member by one end thereof to one of said skis and by the other end thereof to the other of said skis intermediate the ends of said skis, and approximately midway along the length of said skis, said connector member being in the form of a torsion bar whereby said skis are each movable independently in a fore and aft vertical pitching movement, within limits, around the axis of said connector member, due to the torsional characteristics of said connector, the connector means at the ends of said connector member including further means for maintaining the parallelism of said skis and facilitating horizontal plane rigidity of said skis.
Claim 2
Dependent Claim
163 words
A pair of buoyant water ski components or the like and means incorporated thereto connect said components in spaced and parallel relationship with one another to form a platform, and foot engaging means on the upper surface of each of said components, said connecting means including a connector member and means detachably securing said connector member by one end thereof to one of said skis and by the other end thereof to the other of said skis intermediate the ends of said skis, and approximately midway along the length of said skis, said connector member being in the form of a torsion bar whereby said skis are each movable independently in a fore and aft vertical pitching movement, within limits, around the axis of said connector member, due to the torsional characteristics of said connector, the connector means at the ends of said connector member including further means for maintaining the parallelism of said skis and facilitating horizontal plane rigidity of said skis.
Claim 3
Dependent Claim
33 words
The device according to claim 1 in which said connector member is adjustably secured to said skis whereby said skis can be fixed in a fore and aft direction relative to one another.
Claim 4
Dependent Claim
102 words
The device according to claim 2 in which said connector bar is secured to said skis on one side of the longitudinal axis of said skis whereby said skis can be secured to said connector bar in a relatively close parallel relationship when said skis are positioned whereby the connections of said bar to said skis is on the inner side of said longitudinal axis and can be secured to said connector bar in a relatively wide parallel position when said skis are positioned whereby the connections of said bar to said skis is on the outer side of said longitudinal axis.
Claim 5
Dependent Claim
102 words
The device according to claim 1 in which said connector bar is secured to said skis on one side of the longitudinal axis of said skis whereby said skis can be secured to said connector bar in a relatively close parallel relationship when said skis are positioned whereby the connections of said bar to said skis is on the inner side of said longitudinal axis and can be secured to said connector bar in a relatively wide parallel position when said skis are positioned whereby the connections of said bar to said skis is on the outer side of said longitudinal axis.
Claim 6
Independent Claim
93 words
The device according to claims 1, 2 or 4 in which said means to detachably secure said connector member to said skis include a detachable vertically situated splined connection between said connector bar and said skis, said splined connections being lockably secured in any one of a plurality of positions whereby said skis are in fixed symmetrical side by side relationship or in fixed echelon relationship as desired so as to realize a substantially rigid platform with no substantial roll for individual skis but with controlled and limited pitching movement for said skis.
Claim 7
Dependent Claim
90 words
The device according to claim 3 in which said means to detachably secure said connector member to said skis include a detachable vertically situated splined connection between said connector bar and said skis, said splined connections being lockably secured in any one of a plurality of positions whereby said skis are in fixed symmetrical side by side relationship or in fixed echelon relationship as desired so as to realize a substantially rigid platform with no substantial roll for individual skis but with controlled and limited pitching movement for said skis.
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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) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |