Pet door flap with slow moving sill

Details Pet door flap with slow moving sill Pet door flap with slow moving sill

1985-06-05

1987-03-24

Britts, Ramon S.

Flexible or portable closure, partition, or panel

Plural and/or with rigid closure

Diverse types

49169, 49488, 160116, 160DIG16, E06B 728

Patent

active

046517936

ABSTRACT:
A flexible, resilient pet door flap hung in a frame so that it is movable in the horizontal direction between vertical side walls has peripheral Z-shaped edge portions terminating in web portions for effecting a seal against the side walls. The bottom portion of the frame includes a movable sill with magnets corresponding to magnets in the flap, and a secured piston in the frame having a surface adjacent a surface of the sill, with viscous material therebetween, to inhibit movement of the sill.

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patent: 4408416 (1983-10-01), Davlantes
patent: 4480407 (1984-11-01), Needham et al.

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