Device for adjustably positioning a cross bar

Details Device for adjustably positioning a cross bar Device for adjustably positioning a cross bar

1984-11-08

1986-07-08

Hafer, Robert A.

Undertaking

182189, 256 11, 272101, A63K 304, A63B 502, A62B 120, E04H 1700

Patent

active

045989060

ABSTRACT:
An apparatus and a method for enabling changes in the height of a cross bar in athletic equipment, such as pole vaulting equipment. The apparatus generally comprises a pair of adapters for attachment to the upright standards which have a plurality of outwardly extending arms thereon. The adapters also have arms which can be located above the uppermost of the arms on the standards or below the lowermost of the arms on the standards and which arms on the adapters are also located to receive and hold the cross bar thereon.

REFERENCES:
patent: 1193972 (1916-08-01), Balenti
patent: 3612460 (1971-10-01), Smith
patent: 3749368 (1973-07-01), Miller
patent: 3771767 (1973-11-01), Dougherty
patent: 4065103 (1977-12-01), Sweezey
patent: 4245838 (1981-01-01), Gordon
Popular Mechanics, pp. 114-115, 9/1963, vol. 120, #3.

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