US4651793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pet door flap with slow moving sill
Assignee: Individual
•
Filing: 1985-06-05
•
Granted: 1987-03-24
•
Expires: 2005-06-05
Abstract
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.
Inventors
- 👤 George N. Davlantes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:04
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/28; E06B7/32; Y; Y10; Y10S; Y10S160/00; Y10S160/16
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
95 words
A pet door comprising frame means, said frame means comprising top, bottom and vertical side frame members defining an opening having a width, and generally planar flap means of resilient, flexible material for closing said opening, said flap means hingedly connected to said top frame member and extending downwardly to said bottom frame member, said flap means terminating in integral vertical edge portions of the same resilient, flexible material, each said edge portion comprising in cross-section a convoluted shape, said flap means having a width selected to be greater than said width of said opening.
Claim 2
Dependent Claim
95 words
A pet door comprising frame means, said frame means comprising top, bottom and vertical side frame members defining an opening having a width, and generally planar flap means of resilient, flexible material for closing said opening, said flap means hingedly connected to said top frame member and extending downwardly to said bottom frame member, said flap means terminating in integral vertical edge portions of the same resilient, flexible material, each said edge portion comprising in cross-section a convoluted shape, said flap means having a width selected to be greater than said width of said opening.
Claim 3
Dependent Claim
28 words
The pet door of claim 1 wherein said edge portion comprises in cross-section a convoluted shape terminating in a web portion that is co-planar with said flap means.
Claim 4
Dependent Claim
28 words
The pet door of claim 1 wherein said edge portion comprises in cross-section a general Z-shape terminating in a web portion that is co-planar with said flap means.
Claim 5
Dependent Claim
32 words
The pet door of claim 1, 2 or 3 wherein said flap means is mounted in said top frame member for slidable movement in the horizontal direction between said vertical frame members.
Claim 6
Dependent Claim
74 words
The pet door of claim 1 wherein said flap means has a bottom portion bearing first magnetic means, said bottom frame member including a sill means mounted for vertical movement in said bottom frame member to meet said flap means bottom portion, said sill means bearing second magnetic means corresponding in position to said flap means first magnetic means, said bottom frame member including means for inhibiting said vertical movement of said sill means.
Claim 7
Dependent Claim
106 words
A pet door comprising frame means, said frame means comprising top, bottom and vertical side frame members, defining an opening having a width, and flap means for closing said opening, said flap means being made of a resilient, flexible material, being hingedly connected to said top frame member and extending downwardly to said bottom frame member, and comprising a general planar central thicker portion, and vertical edge portions comprising in cross-section a generally thinner convoluted shape terminating in a web portion that is co-planar with said flap means central portion, said flap means having a width selected to be greater than said width of said opening.
Claim 8
Dependent Claim
106 words
A pet door comprising frame means, said frame means comprising top, bottom and vertical side frame members, defining an opening having a width, and flap means for closing said opening, said flap means being made of a resilient, flexible material, being hingedly connected to said top frame member and extending downwardly to said bottom frame member, and comprising a general planar central thicker portion, and vertical edge portions comprising in cross-section a generally thinner convoluted shape terminating in a web portion that is co-planar with said flap means central portion, said flap means having a width selected to be greater than said width of said opening.
Claim 9
Dependent Claim
118 words
A pet door comprising: frame means, said frame means comprising top, bottom and vertical side frame members defining an opening, and generally planar flap means of resilient, flexible material for closing said opening, said flap means hingedly connected to said top frame member and extending downwardly to said bottom frame member, said flap means having a bottom portion bearing first magnetic means, said bottom frame member including a sill means mounted for vertical movement in said bottom frame member to meet said flap means bottom portion, said sill means bearing second magnetic means corresponding in position to said flap means first magnetic means, said bottom frame member including means for inhibiting said vertical movement of said sill means.
Claim 10
Dependent Claim
118 words
A pet door comprising: frame means, said frame means comprising top, bottom and vertical side frame members defining an opening, and generally planar flap means of resilient, flexible material for closing said opening, said flap means hingedly connected to said top frame member and extending downwardly to said bottom frame member, said flap means having a bottom portion bearing first magnetic means, said bottom frame member including a sill means mounted for vertical movement in said bottom frame member to meet said flap means bottom portion, said sill means bearing second magnetic means corresponding in position to said flap means first magnetic means, said bottom frame member including means for inhibiting said vertical movement of said sill means.
Claim 11
Dependent Claim
53 words
The pet door of claim 7 wherein said means for inhibiting comprises: piston means secured in said bottom frame member and having a first inhibiting surface, said sill means having a second inhibiting surface adjacent said piston first inhibiting surface, and defining a gap therebetween, and highly viscous material located in said gap.
Claim 12
Dependent Claim
23 words
The pet door of claim 8 wherein said gap defines an area that remains substantially constant throughout the movement of said sill means.
Claim 13
Dependent Claim
36 words
The pet door of claim 8 wherein said highly viscous material is selected so that when the sill is raised by hand it will take more than a minute to drop vertically to its original position.
References Cited (Backward Citations)
US839566A
Cited
US1728453A
Cited
US1666328A
Cited
US1690649A
Cited
US1681134A
Cited
US2560661A
Cited
US2748854A
Cited
US2758646A
Cited
US2832406A
Cited
US2882964A
Cited
US2839791A
Cited
US3241198A
Cited
US3464158A
Cited
US3654733A
Cited
US3690299A
Cited
US3797554A
Cited
US3811224A
Cited
US3918203A
Cited
US4053007A
Cited
US4047331A
Cited
US4408416A
Cited
US4173099A
Cited
EP0062153A1
Cited
GB2102868A
Cited
US4480407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-23 | 1990-09-22 | 1991-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-23 | 1994-09-22 | 1995-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-23 | 1998-09-22 | 1999-03-24 | $7700.00 | Window Closed / Lapsed |