Selectively operable doorstop for converting a double-acting doo

Details Selectively operable doorstop for converting a double-acting doo Selectively operable doorstop for converting a double-acting doo

1981-09-21

1984-12-25

Moore, Richard E.

Closure fasteners

Keepers

292288, 16 86A, E05C 2102

Patent

active

044899688

ABSTRACT:
A selectively removable or retractable doorstop for converting double-acting, double or single doors to a single-acting, single door, for permitting control over traffic into and out of public premises at desired times. The doorstop includes an intercept portion which can be selectively removably or retractably inserted into the path of a double-acting door thereby restricting it to opening in one direction only. Different embodiments of the doorstop are provided respectively for temporary or permanent mounting on or in a doorjamb, or on or in the stile of a temporarily fixed-in-place door, thus giving a selection of options for any specific situation.

REFERENCES:
patent: 438626 (1890-10-01), Kern
patent: 925184 (1909-06-01), Hess
patent: 1375769 (1921-04-01), Bleackacek
patent: 2264962 (1941-12-01), Adams
patent: 2527413 (1950-10-01), Grossman
patent: 2532586 (1950-12-01), Wickwire
patent: 3130455 (1964-04-01), Borlenghi
patent: 4021880 (1977-05-01), Murphy
patent: 4110867 (1978-09-01), Gwozdz

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