Hopper window

Details Hopper window Hopper window

1996-08-19

1997-07-29

Dorner, Kenneth J.

Movable or removable closures

Mounted for multidirectional or oblique movement

Swings on plural axes; e.g., pivotal link arms

49251, 49261, E05D 1528, E05D 1540

Patent

active

056512155

ABSTRACT:
A sash of a hopper window is linked to a shoe which engages a track in constant resistance to travel along the track such that the sash can be tilted by hand to any angle from the track within a predetermined range of angles, and will remain at the angle unaided.

REFERENCES:
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patent: 1388121 (1921-08-01), Porter
patent: 1605388 (1926-11-01), Bogert
patent: 1696607 (1928-12-01), Hysert
patent: 1750664 (1930-03-01), Dreusike
patent: 1760072 (1930-05-01), Lea
patent: 1786036 (1930-12-01), Stewart
patent: 1832058 (1931-11-01), Stewart
patent: 1919371 (1933-07-01), Klemm
patent: 2027240 (1936-01-01), Looney
patent: 2266076 (1941-12-01), Reynolds
patent: 2796639 (1957-06-01), Reynolds
patent: 3650070 (1972-03-01), Ringle, III
patent: 3978615 (1976-09-01), Kagoura
patent: 5433040 (1995-07-01), Morrison

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