Patent US3637204A successfully refreshed from Google Patents.
US3637204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pole vault crossbar apparatus
Assignee: Individual
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Filing: 1970-10-28
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Granted: 1972-01-25
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Expires: 1990-10-28
Abstract
Abstract A crossbar for pole vaulting is placed on pegs mounted for vertical travel on two standards. The pegs are moved upward by halyards attached to the pegs and run over wheels at the top of the standards or downward by downhauls attached to the pegs. Therefore, the crossbar may be replaced when the pegs are at a height which is conveniently reached by attendants. The pegs and the crossbar are then raised to the desired height and stopped when protuberances on the halyards engage adjustable stops on the standards. For automatic operation, an electrically conductive crossbar for pole vaulting is set upon pegs which are mounted for vertical travel on the two standards. If the bar is knocked off, the change in electrical resistance between the pegs is noted and the pegs run down the standards so the crossbar is manually replaced on the pegs at which time the change in electrical resistance between pegs cause the pegs to be run up the standards. The height the pegs reach on the standard is adjusted by a limit switch on the standard.
Inventors
- 👤 Theodore R Dawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:22
CPC Classifications
A; A63; A63B; A63B5/00; A63B5/02
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
71 words
In an apparatus for supporting a. a crossbar for pole vaulting having b. two standards each having c. a crossbar-supporting peg thereon, d. the improvement comprising in combination with the above: e. electrical means connected to the standards for detecting if the crossbar is on the pegs, and f. means connected to the standards for automatically lowering the pegs responsive to the detection that the crossbar is not on the pegs.
Claim 2
Dependent Claim
71 words
In an apparatus for supporting a. a crossbar for pole vaulting having b. two standards each having c. a crossbar-supporting peg thereon, d. the improvement comprising in combination with the above: e. electrical means connected to the standards for detecting if the crossbar is on the pegs, and f. means connected to the standards for automatically lowering the pegs responsive to the detection that the crossbar is not on the pegs.
Claim 3
Dependent Claim
39 words
The invention as defined in claim 1 with the additional limitation of said means for detecting including g. said crossbar made of electrically conductive material and h. an electrical circuit between the standards which is completed by said crossbar.
Claim 4
Dependent Claim
49 words
The invention as defined in claim 2 with the additional limitations of said means for lowering the pegs including j. wheels journaled in the top and bottom of each standard, k. an endless belt trained over the wheels of each standard, and m. said pegs attached to said belts.
Claim 5
Dependent Claim
34 words
The invention as defined in claim 1 with the additional limitation of g. means connected to the standards for raising the pegs to an adjustable position when the crossbar is placed on the pegs.
Claim 6
Dependent Claim
49 words
The invention as defined in claim 1 with the additional limitation of said means for lowering the pegs including g. wheels journaled in the top and bottom of each standard, h. an endless belt trained over the wheels of each standard, and j. said pegs attached to said belts.
Claim 7
Dependent Claim
26 words
The invention as defined in claim 5 with the additional limitation of k. a reversible electrical motor drivingly connected to the bottom wheel of each standard.
Claim 8
Dependent Claim
30 words
The invention as defined in claim 6 with the additional limitation of m. means for supplying power to the motor responsive to the position of the pegs upon the standards.
Claim 9
Dependent Claim
26 words
The invention as defined in claim 6 with the additional limitation of m. means for supplying power to the motor responsive to said means for detecting.
Claim 10
Dependent Claim
39 words
The invention as defined in claim 8 with the additional limitation of said means for detecting including n. a crossbar of electrically conductive material and o. an electrical circuit between the standards which is completed only by said crossbar.
Claim 11
Dependent Claim
81 words
In an apparatus for supporting a. a crossbar for pole vaulting including b. two standards having c. crossbar-supporting pegs thereon, d. the improved method of setting the crossbar to the desired height comprising: e. detecting if the crossbar is on the pegs, f. automatically lowering the pegs responsive to the detection that the crossbar is not on the pegs, and g. automatically raising the pegs to an adjustable height responsive to the detection that the c. crossbar is on the pegs.
Claim 12
Dependent Claim
81 words
In an apparatus for supporting a. a crossbar for pole vaulting including b. two standards having c. crossbar-supporting pegs thereon, d. the improved method of setting the crossbar to the desired height comprising: e. detecting if the crossbar is on the pegs, f. automatically lowering the pegs responsive to the detection that the crossbar is not on the pegs, and g. automatically raising the pegs to an adjustable height responsive to the detection that the c. crossbar is on the pegs.
Claim 13
Dependent Claim
41 words
The invention as defined in claim 10 with the additional limitation of h. attaching each peg to an endless belt, j. journaling each belt to one of the standards, and k. raising and lowering the pegs by moving the endless belts.
Claim 14
Dependent Claim
29 words
The invention as defined in claim 10 with the additional limitation of h. measuring the electrical resistance between the pegs to detect if the crossbar is on the pegs.
Claim 15
Dependent Claim
41 words
The invention as defined in claim 12 with the additional limitation of j. attaching each peg to an endless belt, k. journaling each belt to one of the standards, and m. raising and lowering the pegs by moving the endless belts.
Claim 16
Dependent Claim
161 words
In an apparatus for supporting a. a crossbar for pole vaulting including b. two standards, each having c. a crossbar-supporting peg thereon, d. the improvement comprising in combination with the above: e. each of said pegs being mounted for vertical travel up and down said standard, f. a wheel at the top of each of the standards, g. a flexible tension member extending from the bottom of each standard to and over the wheel, h. said peg attached to said flexible tension member, j. a standard extension of each standard called a riser, k. said wheel at the top of said riser, m. said riser vertically adjustable, n. a halyard end of said flexible tension member extending from the peg over said wheel to within said riser, o. a weight attached to said halyard end of the flexible tension member within said riser, and p. a downhaul end of said flexible tension member extending down from said peg outside the riser.
Claim 17
Dependent Claim
161 words
In an apparatus for supporting a. a crossbar for pole vaulting including b. two standards, each having c. a crossbar-supporting peg thereon, d. the improvement comprising in combination with the above: e. each of said pegs being mounted for vertical travel up and down said standard, f. a wheel at the top of each of the standards, g. a flexible tension member extending from the bottom of each standard to and over the wheel, h. said peg attached to said flexible tension member, j. a standard extension of each standard called a riser, k. said wheel at the top of said riser, m. said riser vertically adjustable, n. a halyard end of said flexible tension member extending from the peg over said wheel to within said riser, o. a weight attached to said halyard end of the flexible tension member within said riser, and p. a downhaul end of said flexible tension member extending down from said peg outside the riser.
Claim 18
Dependent Claim
59 words
The invention as defined in claim 14 with the additional limitations of q. a detent attached to the bottom of the riser, r. said detent extending into the riser in operative relationship to the top of the weight so that the detent engages the top of the weight and prevents the weight from rising when the detent is engaged.
Claim 19
Dependent Claim
37 words
The invention as defined in claim 14 with the additional limitations of q. a spring-loaded reel attached to the bottom of said standard, and r. said downhaul end of said flexible tension member wound around said reel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |