Vertically slidable window

Details Vertically slidable window Vertically slidable window

1981-03-23

1984-12-11

Kannan, Philip C.

Flexible or portable closure, partition, or panel

Plural and/or with rigid closure

Diverse types

49116, E06B 344, E05F 1700

Patent

active

044872429

ABSTRACT:
A vertically slidable window comprises two upper and lower sashes to open and close the window opening. The vertical side members of the upper sash and the vertical side members of the lower sash are provided with toothed rack members opposed to each other and pinions are installed between each pair of rack members to mesh with the latter, so that the upper and lower sashes can be raised and lowered in interlocked relation.

REFERENCES:
patent: 1021492 (1912-03-01), Strauss
patent: 1023723 (1912-04-01), Cossey
patent: 1418550 (1922-06-01), Fentress
patent: 1807425 (1931-05-01), McCalmon
patent: 2120986 (1938-06-01), Morris
patent: 2568800 (1951-09-01), Galla
patent: 2587547 (1952-02-01), Steingruber
patent: 2970677 (1961-02-01), Springs, Jr. et al.
patent: 3199858 (1965-08-01), Koblensky

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