Elements for forming frames

Details Elements for forming frames Elements for forming frames

1975-09-15

1978-01-10

Perham, Alfred C.

Static structures (e.g., buildings)

With adjunctive means for assembly or disassembly

Structure includes tool or opening to provide access for a...

49504, 52213, 52656, 403231, E06B 104, E04C 238

Patent

active

040671577

ABSTRACT:
Elements for forming a frame such as a metal door frame having spring clips by which a head rail and side members are connected, and a spacer or tie bar by which the elements can be stabilized during erection of the frame in a door way.

REFERENCES:
patent: 1795326 (1931-03-01), Baum
patent: 3156331 (1964-11-01), Sklar
patent: 3726552 (1973-04-01), Widerby
patent: 3769773 (1973-11-01), Mochizuki
patent: 3884003 (1975-05-01), Herr et al.
patent: 3889423 (1975-06-01), Begin

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