Movable or removable closures – Plural wings radiate from common pivot; i.e. – revolving
Patent
1989-08-22
1991-02-05
Kannan, Philip C.
Movable or removable closures
Plural wings radiate from common pivot; i.e., revolving
49 46, 192 81C, 403323, E05D 1502
Patent
active
049893688
ABSTRACT:
A revolving door includes an elongated pivot column having a plurality of integrally formed first grooves extending longitudinally therealong at equidistantly spaced intervals therearound. A plurality of barrier members are provided. At least one of the members is associated with each first groove and arranged to extend radially outward of the groove. A locking device is concealably contained and interposed between the side wall of each first groove and a terminal end of each barrier member mountingly associated with the groove for retaining the barrier member in the groove. The locking member includes a second groove which extends longitudinally along the side wall of each first groove and a rigid locking bar extending into the second groove. The locking bar has a round side and a flat side and is selectively rotatable to wedging engage a wall of the second groove and the terminal end of each barrier member.
REFERENCES:
patent: 1022684 (1912-04-01), Kleinbaum
patent: 1655501 (1928-01-01), Hedley et al.
patent: 1658264 (1928-02-01), Sutton et al.
patent: 1791922 (1931-02-01), Distler et al.
patent: 1914237 (1933-06-01), Blanchard
patent: 1933725 (1933-11-01), Frankford
patent: 2393068 (1946-01-01), Sexton
patent: 2823325 (1958-02-01), Stephan
patent: 3339681 (1967-09-01), Holladay
patent: 3397486 (1968-08-01), Foxwell et al.
patent: 3839825 (1974-10-01), Nica
patent: 3886684 (1975-06-01), Sheckells
patent: 3978613 (1976-09-01), Hayward et al.
patent: 4020927 (1977-05-01), Collins
patent: 4159048 (1979-06-01), Baxter et al.
patent: 4321992 (1982-03-01), Gallo
patent: 4358909 (1982-11-01), Trikilis
patent: 4701074 (1987-10-01), Hall
patent: 4801257 (1989-01-01), Lenk
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