US3796006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Threshold seals
Assignee: Bernard Dixon and Partners Ltd
•
Filing: 1972-01-31
•
Granted: 1974-03-12
•
Expires: 1992-01-31
Abstract
Abstract The sealing action of a draft excluder comprising an elastomeric element and a retaining member is lightened and made more complete without excessive pressures by permitting portions of the section of the element to retreat bodily under loading relative to the member. The element section is round and the member retains the element in an open rectangular section channel.
Inventors
- 👤 B Dixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:54
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/16; E06B7/22; E06B7/23; E06B7/2318; E06B7/2301; E06B7/2303; E06B7/2316
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
190 words
A draft excluder comprising a stiff, elongate member providing a channel of open section, and an elongate elastomeric seal of round section retained in the channel in parallel relationship with the member, the member having on its interior a base, side walls and lips directed inwards towards each other to partially close the open channel section, the lips being opposite the base, thereby retaining the seal but permitting the seal to protrude laterally between the lips to present a longitudinal operative surface, the base and walls making tangential contact with the seal, and the member and seal defining between them,in the absence of loading on the operative surface of the seal, an empty space extending throughout the length of the seal from each side of the contact between the base and the seal, into which space the seal can partially retreat under loading on the operative surface but from which space the seal can resile, said contact being made with the walls and base in two longitudinal planes which intersect substantially on the longitudinal axis of the seal, one of said longitudinal planes intersecting the operative surface of the seal.
Claim 2
Dependent Claim
190 words
A draft excluder comprising a stiff, elongate member providing a channel of open section, and an elongate elastomeric seal of round section retained in the channel in parallel relationship with the member, the member having on its interior a base, side walls and lips directed inwards towards each other to partially close the open channel section, the lips being opposite the base, thereby retaining the seal but permitting the seal to protrude laterally between the lips to present a longitudinal operative surface, the base and walls making tangential contact with the seal, and the member and seal defining between them,in the absence of loading on the operative surface of the seal, an empty space extending throughout the length of the seal from each side of the contact between the base and the seal, into which space the seal can partially retreat under loading on the operative surface but from which space the seal can resile, said contact being made with the walls and base in two longitudinal planes which intersect substantially on the longitudinal axis of the seal, one of said longitudinal planes intersecting the operative surface of the seal.
Claim 3
Dependent Claim
35 words
A draft excluder as claimed in claim 1 in which the seal in an unloaded state is of substantially cylindrical cross-section, and the walls of the member are substantially at right angles to the base.
Claim 4
Dependent Claim
62 words
The draft excluder as claimed in claim 1 further including a first element movable to a closed position and having the draft excluder secured thereto, and a second element having a threshold plate secured thereto, the threshold plate being arranged to cooperate with the excluder in which the plate brushes and then seals against the excluder when the first element is closed.
Claim 5
Dependent Claim
55 words
The draft excluder as claimed in claim 1 further including a first element movable to a closed position, and a second element having the excluder secured thereto, the first element being arranged to cooperate with the excluder in which the first element brushes and then seals against the excluder when the first element is closed.
Claim 6
Dependent Claim
62 words
The draft excluder as claimed in claim 2 further including a first element movable to a closed position and having the draft excluder secured thereto, and a second element having a threshold plate secured thereto, the threshold plate being arranged to cooperate with the excluder in which the plate brushes and then seals against the excluder when the first element is closed.
Claim 7
Dependent Claim
55 words
The draft excluder as claimed in claim 2 further including a first element movable to a closed position, and a second element having the excluder secured thereto, the first element being arranged to cooperate with the excluder in which the first element brushes and then seals against the excluder when the first element is closed.
References Cited (Backward Citations)
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US2616724A
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US2684508A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |