Locking hinge mechanism

Details Locking hinge mechanism Locking hinge mechanism

1989-07-06

1990-09-25

Housel, James C.

Static molds

Miscellaneous mold adjuncts

In situ construction engineering or building type

16223, 16341, 16353, 16374, 249 48, 249170, 249171, 249185, E05D 1110, E04G 1704

Patent

active

049588001

ABSTRACT:
A locking hinge mechanism for concrete forms includes parallel hinge strips connected together by hinges positioned at intervals along the length of the strips. Each hinge includes provision for a wedge lock which, when fully inserted, positions the hinge strips at a secure 90.degree. angle. The hinge strips are spaced apart from the juncture of the strips, when arranged at the 90.degree. angle, so that concrete flashings do not clog the hinge. The hinge strips are in turn affixed to the side rails of the joining concrete forms to form a 90.degree. angle, such as for a column form arrangement.

REFERENCES:
patent: 791585 (1905-06-01), Schuller
patent: 953383 (1910-03-01), Holman
patent: 1078363 (1913-11-01), Lisicke
patent: 1159184 (1915-11-01), Dale
patent: 1455550 (1923-05-01), Rodell
patent: 1683814 (1928-09-01), Block
patent: 3357673 (1967-12-01), Williams
patent: 3507473 (1970-04-01), Blonde
patent: 3519242 (1970-07-01), Harkins
patent: 3724801 (1973-04-01), Sels et al.
patent: 3917216 (1975-11-01), Plaugh
patent: 4003543 (1977-01-01), Doubleday et al.

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