Patent US3685824A successfully refreshed from Google Patents.
US3685824A
Expired / Lapsed
US
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Training hurdle
Assignee: Three Line Research and Development Co Inc
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Filing: 1971-03-10
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Granted: 1972-08-22
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Expires: 1991-03-10
Abstract
Abstract A training hurdle comprising a pair of legs pivoted to form an ''''X'''', with feet at the lower ends of the legs and pins at the upper ends of the legs received in openings in a crossbar. The bar has a plurality of openings and the legs are adapted to be pivoted to different angular positions for adjustment of the height of the crossbar. The bar is adapted to fall off the pins when struck by a hurdler.
Inventors
- 👤 Governor V Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:58
CPC Classifications
A; A63; A63K; A63K3/00; A63K3/04; A63K3/043
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
180 words
A hurdle comprising a pair of legs of generally equal length, means interconnecting the legs intermediate their ends for their disposition in the form of an ''''X'''' with the legs at various angles to one another for varying heights of the ''''X '''', each leg having a foot at its lower end for supporting the ''''X'''' in upright position on a track, each leg having at its upper end a pin projecting generally at right angles to the plane of the legs and in forward direction in respect to the mode of setting up the hurdle on a track, and a crossbar having at least one opening therein adjacent one of its ends extending transversely to the length of the crossbar for receiving the pin on one of the legs and a series of openings adjacent its other end spaced at intervals lengthwise of the crossbar each extending transversely to the length of the crossbar for receiving the pin on the other Leg with the crossbar readily slidable off the pins in said forward direction when struck by a hurdler.
Claim 2
Dependent Claim
180 words
A hurdle comprising a pair of legs of generally equal length, means interconnecting the legs intermediate their ends for their disposition in the form of an ''''X'''' with the legs at various angles to one another for varying heights of the ''''X '''', each leg having a foot at its lower end for supporting the ''''X'''' in upright position on a track, each leg having at its upper end a pin projecting generally at right angles to the plane of the legs and in forward direction in respect to the mode of setting up the hurdle on a track, and a crossbar having at least one opening therein adjacent one of its ends extending transversely to the length of the crossbar for receiving the pin on one of the legs and a series of openings adjacent its other end spaced at intervals lengthwise of the crossbar each extending transversely to the length of the crossbar for receiving the pin on the other Leg with the crossbar readily slidable off the pins in said forward direction when struck by a hurdler.
Claim 3
Dependent Claim
31 words
A hurdle as set forth in claim 1 wherein each leg is formed of a tubular metal rod bent at one end constituting its upper end to form the respective pin.
Claim 4
Dependent Claim
19 words
A hurdle as set forth in claim 2 wherein the interconnecting means comprises a pivot extending through the legs.
Claim 5
Dependent Claim
28 words
A hurdle as set forth in claim 3 wherein the pivot is a bolt having a nut threaded thereon for clamping the legs in various positions of adjustment.
Claim 6
Dependent Claim
22 words
A hurdle as set forth in claim 1 wherein the crossbar has a series of said openings adjacent its said one end.
Claim 7
Dependent Claim
33 words
A hurdle as set forth in claim 2 wherein each rod is bent at its other end constituting its lower end to form the foot with the foot extending both rearward and forward.
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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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |