US4712331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door
Assignee: HARDGLASS IND CO Ltd
•
Filing: 1987-05-27
•
Granted: 1987-12-15
•
Expires: 2007-05-27
Abstract
Abstract The door comprising a door main body, and an air shielding member attached to at least one of both side edges in the vertical direction and both side edges in the lateral direction of the door main body, in which the air shielding member is adapted to shield the exit/entrance of airs through the gaps between the door main body and surfaces opposing thereto and comprises an engaging member for engagement with the door main body and a shielding member outwardly protruding side way from the door main body. The door main body includes a pair of longitudinally extending and outwardly protruding side plates which are parallel to each other, and each of which has an engaging groove on its inner surface. The engaging member has a longitudinally extending flat plate portion made of a rigid synthetic resin and is integrally formed with a pair of longitudinally extending attaching plates which protrude parallel to each other and are spaced for direct insertion between the sides plates. The attaching plates each have a longitudinally extending holding protrusion for positive engagement with a respective one of the grooves in the side plates of the door main body.
Inventors
- 👤 Kenichi Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:38
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/16; E06B7/22; E06B7/23; E06B7/2316
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
312 words
A door comprising: a door main body (11) including a pair of longitudinally extending side plates (1d) which outwardly protrude in parallel spaced relation with respect to each other from at least one side edge of said door, each of said side plates having an engaging groove (1e) on its inner side surface, the engaging grooves extending in the longitudinal direction along the length of said side plates; and an air shielding member (3) attached to said side plates of said door main body, said air shielding member comprising a resiliently deformable flat plate portion (3a) made of a rigid synthetic resin and extending in the longitudinal direction along each of the protruding surfaces of said side plates, a pair of attaching plates (3b) disposed between said side plates and protruding inwardly in parallel spaced relation with respect to each other from respective longitudinally extending side edges of said flat plate portion with the outside surfaces of said attaching plates maintained in close contact with respective inside surfaces of said side plates, each of said attaching plates having a holding protrusion (3c) extending in the longitudinal direction along the length of said attaching plates for locking engagement with a respective one of said engaging grooves of said side plates, and a pair of shielding plates (3d) made of a soft synthetic resin and protruding outwardly in parallel spaced relation with respect to each other from respective longitudinally extending side edges of said flat plate portion, said air shielding member adapted to be directly fitted into shielding engagement with said door main body by positioning said longitudinally extending holding protrusions (3c) against the longitudinally extending side plates (1d) and pushing the shielding member inwardly while resiliently deforming said flat plate portion (3a) and said attaching plates (3b) until both the protrusions (3c) are lockingly engaged with respective ones of said engaging grooves (1e).
Claim 2
Dependent Claim
312 words
A door comprising: a door main body (11) including a pair of longitudinally extending side plates (1d) which outwardly protrude in parallel spaced relation with respect to each other from at least one side edge of said door, each of said side plates having an engaging groove (1e) on its inner side surface, the engaging grooves extending in the longitudinal direction along the length of said side plates; and an air shielding member (3) attached to said side plates of said door main body, said air shielding member comprising a resiliently deformable flat plate portion (3a) made of a rigid synthetic resin and extending in the longitudinal direction along each of the protruding surfaces of said side plates, a pair of attaching plates (3b) disposed between said side plates and protruding inwardly in parallel spaced relation with respect to each other from respective longitudinally extending side edges of said flat plate portion with the outside surfaces of said attaching plates maintained in close contact with respective inside surfaces of said side plates, each of said attaching plates having a holding protrusion (3c) extending in the longitudinal direction along the length of said attaching plates for locking engagement with a respective one of said engaging grooves of said side plates, and a pair of shielding plates (3d) made of a soft synthetic resin and protruding outwardly in parallel spaced relation with respect to each other from respective longitudinally extending side edges of said flat plate portion, said air shielding member adapted to be directly fitted into shielding engagement with said door main body by positioning said longitudinally extending holding protrusions (3c) against the longitudinally extending side plates (1d) and pushing the shielding member inwardly while resiliently deforming said flat plate portion (3a) and said attaching plates (3b) until both the protrusions (3c) are lockingly engaged with respective ones of said engaging grooves (1e).
Claim 3
Dependent Claim
355 words
A door comprising: a door main body (11) including a pair of longitudinally extending side plates (1d) which outwardly protrude in parallel spaced relation with respect to each other from at least one side edge of said door, each of said side plates having an engaging groove (1e) on its inner side surface, the engaging grooves extending in the longitudinal direction along the length of said side plates; and an air shielding member (3) attached to said side plates of said door main body, said air shielding member comprising a resiliently deformable flat plate portion (3a) made of a rigid synthetic resin and extending in the longitudinal direction along each of the protruding surfaces of said side plates, a pair of attaching plates (3b) disposed between said side plates and protruding inwardly in parallel spaced relation with respect to each other from respective longitudinally extending side edges of said flat plate portion with the outside surfaces of said attaching plates maintained in close contact with respective inside surfaces of said side plates, each of said attaching plates having a holding protrusion (3c) extending in the longitudinal direction along the length of said attaching plates for locking engagement with a respective one of said engaging grooves of said plates, and a pair of shielding plates (3d) made of a soft synthetic resin and protruding outwardly in parallel spaced relation with respect to each other from respective longitudinally extending side edges of said flat plates portion, wherein both of said shielding plates have a plurality of separating grooves (3e) for adjusting the outward protruding length of said shielding plates, said separating grooves extending in parallel spaced relation with respect to each other along the longitudinal direction of the shielding plates, said air shielding member adapted to be directly fitted into shielding engagement with said door main body by positioning said longitudinally extending holding protrusions (3c) against the longitudinally extending side plates (1d) and pushing the shielding member inwardly while resiliently deforming said flat plate portion (3a) and said attaching plates (3b) until both the protrusions (3c) are lockingly engaged with respective ones of said engaging grooves (1e).
Claim 4
Dependent Claim
355 words
A door comprising: a door main body (11) including a pair of longitudinally extending side plates (1d) which outwardly protrude in parallel spaced relation with respect to each other from at least one side edge of said door, each of said side plates having an engaging groove (1e) on its inner side surface, the engaging grooves extending in the longitudinal direction along the length of said side plates; and an air shielding member (3) attached to said side plates of said door main body, said air shielding member comprising a resiliently deformable flat plate portion (3a) made of a rigid synthetic resin and extending in the longitudinal direction along each of the protruding surfaces of said side plates, a pair of attaching plates (3b) disposed between said side plates and protruding inwardly in parallel spaced relation with respect to each other from respective longitudinally extending side edges of said flat plate portion with the outside surfaces of said attaching plates maintained in close contact with respective inside surfaces of said side plates, each of said attaching plates having a holding protrusion (3c) extending in the longitudinal direction along the length of said attaching plates for locking engagement with a respective one of said engaging grooves of said plates, and a pair of shielding plates (3d) made of a soft synthetic resin and protruding outwardly in parallel spaced relation with respect to each other from respective longitudinally extending side edges of said flat plates portion, wherein both of said shielding plates have a plurality of separating grooves (3e) for adjusting the outward protruding length of said shielding plates, said separating grooves extending in parallel spaced relation with respect to each other along the longitudinal direction of the shielding plates, said air shielding member adapted to be directly fitted into shielding engagement with said door main body by positioning said longitudinally extending holding protrusions (3c) against the longitudinally extending side plates (1d) and pushing the shielding member inwardly while resiliently deforming said flat plate portion (3a) and said attaching plates (3b) until both the protrusions (3c) are lockingly engaged with respective ones of said engaging grooves (1e).
Claim 5
Dependent Claim
377 words
A door comprising: a door main body (11) including a pair of longitudinally extending side plates (1d) which outwardly protrude in parallel spaced relation with respect to each other from at least one side edge of said door, each of said side plates having an engaging groove (1e) on its inner side surface, the engaging grooves extending in the longitudinal direction along the length of said side plates; and an air shielding member (3) attached to said side plates of said door main body, said air shielding member comprising a resiliently deformable flat plates portion (3a) made of a rigid along each of the protruding surfaces of said side plates, a pair of attaching plates (3b) disposed between said side plates and protruding inwardly in parallel spaced relation with respect to each other from respective longitudinally extending side edges of said flat plate portion with the outside surfaces of said attaching plates maintained in close contact with respective inside surfaces of said side plates, each of said attaching plates having a holding protrusion (3c) extending in the longitudinal direction along the length of said attaching plates for locking engagement with a respective one of said engaging grooves of said side plates, and a pair of shielding plates (3d) made of a soft synthetic resin and protruding outwardly in parallel spaced relation with respect to each other from respective longitudinally extending side edges of said flat plate portion, wherein both of said shielding plates have a plurality of separating grooves (3e) for adjusting the outward protruding length of said shielding plates, said separating grooves extend in parallel spaced relation with respect to each other along the longitudinal direction of the shielding plates, said separating grooves are disposed on the inside spaced surfaces of said shielding plates, and wherein the outwardly protruding edge portions of said side plates have chamferred inside corners, said air shielding member adapted to be directly fitted into shielding engagement with said door main body by positioning said longitudinally extending holding protrusions (3c) against the longitudinally extending side plates (1d) and pushing the shielding member inwardly while resiliently deforming said flat plate portion (3a) and said attaching plates (3b) until both the protrusions (3c) are lockingly engaged with respective ones of said engaging grooves (1e).
Claim 6
Dependent Claim
377 words
A door comprising: a door main body (11) including a pair of longitudinally extending side plates (1d) which outwardly protrude in parallel spaced relation with respect to each other from at least one side edge of said door, each of said side plates having an engaging groove (1e) on its inner side surface, the engaging grooves extending in the longitudinal direction along the length of said side plates; and an air shielding member (3) attached to said side plates of said door main body, said air shielding member comprising a resiliently deformable flat plates portion (3a) made of a rigid along each of the protruding surfaces of said side plates, a pair of attaching plates (3b) disposed between said side plates and protruding inwardly in parallel spaced relation with respect to each other from respective longitudinally extending side edges of said flat plate portion with the outside surfaces of said attaching plates maintained in close contact with respective inside surfaces of said side plates, each of said attaching plates having a holding protrusion (3c) extending in the longitudinal direction along the length of said attaching plates for locking engagement with a respective one of said engaging grooves of said side plates, and a pair of shielding plates (3d) made of a soft synthetic resin and protruding outwardly in parallel spaced relation with respect to each other from respective longitudinally extending side edges of said flat plate portion, wherein both of said shielding plates have a plurality of separating grooves (3e) for adjusting the outward protruding length of said shielding plates, said separating grooves extend in parallel spaced relation with respect to each other along the longitudinal direction of the shielding plates, said separating grooves are disposed on the inside spaced surfaces of said shielding plates, and wherein the outwardly protruding edge portions of said side plates have chamferred inside corners, said air shielding member adapted to be directly fitted into shielding engagement with said door main body by positioning said longitudinally extending holding protrusions (3c) against the longitudinally extending side plates (1d) and pushing the shielding member inwardly while resiliently deforming said flat plate portion (3a) and said attaching plates (3b) until both the protrusions (3c) are lockingly engaged with respective ones of said engaging grooves (1e).
References Cited (Backward Citations)
US2024192A
Cited
US2949651A
Cited
GB894501A
Cited
FR1348378A
Cited
DE2511331A1
Cited
US4034511A
Cited
DE2622152A1
Cited
US4224974A
Cited
US4510715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |