Patent US4850144A successfully refreshed from Google Patents.
US4850144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door extension apparatus
Assignee: Individual
•
Filing: 1989-01-27
•
Granted: 1989-07-25
•
Expires: 2009-01-27
Abstract
Abstract A door extension apparatus for use with a door having a bottom edge and having grooves in the bottom edge for normally receiving weather strips. The apparatus includes a first extension member for being secured to the grooves in the bottom edge of the door, the first extension member having a bottom edge, the bottom edge of the first extension member having grooves therein; and a second extension member for being secured to the grooves in the bottom edge of the first extension member.
Inventors
- 👤 Fred A. Grisham
- 👤 C. Lynwood Grisham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:47
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/70; E06B3/72; E06B3/725; E06B3/726; E06B3/04; E06B3/06; E06B3/08; E06B2003/7096
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
91 words
A door extension apparatus for use with a door having a bottom edge and having one or more grooves in said bottom edge for receiving one or more weather strips; said apparatus comprising: (a) a first extension member for being snapped into said grooves in said bottom edge of said door, said first extension member having a bottom edge, said bottom edge of said first extension member having grooves therein; and (b) a second extension member for being snapped into said grooves in said bottom edge of said first extension member.
Claim 2
Dependent Claim
91 words
A door extension apparatus for use with a door having a bottom edge and having one or more grooves in said bottom edge for receiving one or more weather strips; said apparatus comprising: (a) a first extension member for being snapped into said grooves in said bottom edge of said door, said first extension member having a bottom edge, said bottom edge of said first extension member having grooves therein; and (b) a second extension member for being snapped into said grooves in said bottom edge of said first extension member.
Claim 3
Dependent Claim
257 words
A door extension apparatus for use with a door having a bottom edge, said bottom edge of said door having a first groove therein extending across said door for receiving a first weather strip and having a second groove therein extending across said door for receiving a second weather strip; said apparatus comprising: (a) a first extension member for being snapped into said grooves in said bottom edge of said door, said first extension member having a bottom edge and a top edge, said top edge of said first extension member having a first projection means for being snapped into said first groove in said bottom edge of said door and having a second projection means for being snapped into said second groove in said bottom edge of said door, said bottom edge of said first extension member having a first groove therein extending across said first extension member for receiving a first weather strip and having a second groove therein extending across said first extension member for receiving a second weather strip; and (b) a second extension member for being snapped into said grooves in said bottom edge of said first extension member, said second extension member having a bottom edge and a top edge, said top edge of said second extension member having a first projection means for being snapped into said first groove in said bottom edge of said first extension member and having a second projection means for being snapped into said second groove in said bottom edge of said first extension member.
Claim 4
Dependent Claim
257 words
A door extension apparatus for use with a door having a bottom edge, said bottom edge of said door having a first groove therein extending across said door for receiving a first weather strip and having a second groove therein extending across said door for receiving a second weather strip; said apparatus comprising: (a) a first extension member for being snapped into said grooves in said bottom edge of said door, said first extension member having a bottom edge and a top edge, said top edge of said first extension member having a first projection means for being snapped into said first groove in said bottom edge of said door and having a second projection means for being snapped into said second groove in said bottom edge of said door, said bottom edge of said first extension member having a first groove therein extending across said first extension member for receiving a first weather strip and having a second groove therein extending across said first extension member for receiving a second weather strip; and (b) a second extension member for being snapped into said grooves in said bottom edge of said first extension member, said second extension member having a bottom edge and a top edge, said top edge of said second extension member having a first projection means for being snapped into said first groove in said bottom edge of said first extension member and having a second projection means for being snapped into said second groove in said bottom edge of said first extension member.
Claim 5
Dependent Claim
52 words
The door extension apparatus of claim 2 in which said bottom edge of said second extension member has a first groove therein extending across said second extension member for receiving a first weather strip and having a second groove therein extending across said second extension member for receiving a second weather strip.
Claim 6
Dependent Claim
38 words
The door extension apparatus of claim 3 in which each of said grooves has a shoulder and in which each of said projection means has a head portion for snapping over said shoulder of one of said grooves.
Claim 7
Dependent Claim
225 words
A door extension apparatus for use with a door having a bottom edge, said bottom edge of said door having a first groove therein extending across said door for receiving a first weather strip and having a second groove therein extending across said door for receiving a second weather strip; said door extension apparatus comprising a plurality of extension members for being stacked one on top of the other and attached to said bottom edge of said door to extend the length of said door, each of said extension members having a bottom edge and a top edge, said bottom edge of each of said extension member having a first groove therein for receiving a first weather strip and having a second groove therein for receiving a second weather strip, said top edge of each of said extension members having a first projection means for being snapped into said first groove in said bottom edge of said door or said bottom edge of one of said extension members and having a second projection means for being snapped into said second groove in said bottom edge of said door or said bottom edge of one of said extension member, each of said grooves having a shoulder and each of said projection means having a head portion for snapping over said shoulder of one of said grooves.
Claim 8
Dependent Claim
225 words
A door extension apparatus for use with a door having a bottom edge, said bottom edge of said door having a first groove therein extending across said door for receiving a first weather strip and having a second groove therein extending across said door for receiving a second weather strip; said door extension apparatus comprising a plurality of extension members for being stacked one on top of the other and attached to said bottom edge of said door to extend the length of said door, each of said extension members having a bottom edge and a top edge, said bottom edge of each of said extension member having a first groove therein for receiving a first weather strip and having a second groove therein for receiving a second weather strip, said top edge of each of said extension members having a first projection means for being snapped into said first groove in said bottom edge of said door or said bottom edge of one of said extension members and having a second projection means for being snapped into said second groove in said bottom edge of said door or said bottom edge of one of said extension member, each of said grooves having a shoulder and each of said projection means having a head portion for snapping over said shoulder of one of said grooves.
References Cited (Backward Citations)
US377838A
Cited
US1973210A
Cited
US2024192A
Cited
US3374580A
Cited
US3380194A
Cited
FR1497616A
Cited
US3413762A
Cited
GB1316453A
Cited
US3871133A
Cited
US4255902A
Cited
US4712331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-24 | 1993-01-23 | 1993-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-24 | 1997-01-23 | 1997-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-24 | 2001-01-23 | 2001-07-25 | $7700.00 | Window Closed / Lapsed |