Adjustable threshold and door sill

Details Adjustable threshold and door sill Adjustable threshold and door sill

1990-10-29

1992-01-28

Kannan, Philip C.

Movable or removable closures

Threshold

Adjustable

49481, 49482, 49488, E06B 170

Patent

active

050834002

ABSTRACT:
A new door threshold/weatherstripping device is disclosed that uses rollers, installed either in a door to contact a threshold surface, or in the threshold to contact the door. The rollers are supported by bearings that permit the rollers to turn freely as the door is opened or closed. The bearings are mounted in housings that have adjustable, spring loaded pistons. These pistons permit the spacing of rollers with respect to the threshold (or door) to be adjusted to ensure a tight seal. In the embodiment that utilizes a threshold mounted roller, a gripper pad is used to prevent the roller from turning when a person steps on it. This prevent possible slipping injuries. Both embodiments have brushes mounded adjacent to the rollers to clean them of dirt, snow and water.

REFERENCES:
patent: 377838 (1888-02-01), Pratt
patent: 600984 (1898-03-01), Wilson
patent: 1422569 (1922-07-01), Hammes
patent: 1595827 (1926-08-01), Frisque
patent: 1837959 (1931-12-01), Gaskin et al.
patent: 4123875 (1978-11-01), Herschberg
patent: 4320598 (1982-03-01), Rodak et al.

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