Patent US3690299A successfully refreshed from Google Patents.
US3690299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pet door apparatus
Assignee: Individual
•
Filing: 1971-03-29
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Granted: 1972-09-12
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Expires: 1991-03-29
Abstract
Abstract A pet door apparatus having an open frame to which is swingably secured a door, the door being capable of swinging loose in either direction with respect to the frame, a substantially Ushaped border element attached to the frame adjacent the end of each leg of the border element, the border element to swing only in one direction along with the door and remain in contact with the frame during the swinging movement of the door in the opposite direction, a slot located within each leg in the area of the attachment to permit the border element to become disconnected from the frame upon application of sufficient force.
Inventors
- 👤 Frances H Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:48
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/28; E06B7/32; Y; Y10; Y10S; Y10S160/00; Y10S160/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
87 words
A pet door apparatus comprising: a frame having a central opening to permit passage of an animal therethrough; a door secured at an edge thereof to said frame, said door being swingably mounted to swing in either the fore or aft direction with respect to said frame; a border element connected to said frame, and movaBle along with said door upon said door swinging in the aft direction, said border element including means which, upon encountering an abnormal condition are capable of becoming disconnected from said frame.
Claim 2
Dependent Claim
87 words
A pet door apparatus comprising: a frame having a central opening to permit passage of an animal therethrough; a door secured at an edge thereof to said frame, said door being swingably mounted to swing in either the fore or aft direction with respect to said frame; a border element connected to said frame, and movaBle along with said door upon said door swinging in the aft direction, said border element including means which, upon encountering an abnormal condition are capable of becoming disconnected from said frame.
Claim 3
Dependent Claim
50 words
Apparatus as defined in claim 1 wherein: said border element is substantially U-shaped and has a first leg, a second leg substantially parallel thereto, and a connecting element connecting said legs, and a fastener passing through each of said legs to effect the connection of said legs to said frame.
Claim 4
Dependent Claim
38 words
Apparatus as defined in claim 1 wherein: said means includes a slot formed within each of said legs, each of said slots extending between a respective fastener and the exterior of the free end of its respective leg.
Claim 5
Dependent Claim
23 words
Apparatus as defined in claim 3 wherein: the width of each of said slots is less than the width of its respective fastener.
Claim 6
Dependent Claim
25 words
Apparatus as defined in claim 4 wherein: said border element is connected to said frame directly adjacent the securement of said door to said frame.
Claim 7
Dependent Claim
17 words
Apparatus as defined in claim 5 wherein: said door is formed of a flexible hard rubber material.
Claim 8
Dependent Claim
18 words
Apparatus as defined in claim 6 wherein: said border element is formed of a flexible hard rubber material.
References Cited (Backward Citations)
US2560661A
Cited
US2758646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |