Patent US4070801A successfully refreshed from Google Patents.
US4070801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible dock seal
Assignee: Individual
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Filing: 1976-10-04
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Granted: 1978-01-31
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Expires: 1996-10-04
Abstract
Abstract A flexible dock seal for closing an opening such as a loading dock with respect to a truck or trailer takes the form of an inverted U-shaped flexible structure normally positioned in extended relation to the loading dock opening by resilient devices and yieldable upon engagement therewith by the truck or trailer so as to form a satisfactory closure between the dock and the truck or trailer.
Inventors
- 👤 Larry O'Neal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:30
CPC Classifications
B; B65; B65G; B65G69/00; B65G69/008
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
A flexible dock seal for positioning on a wall about an opening therein and comprising a flexible inverted U-shaped device consisting of a horizontal upper flexible member and a pair of vertical flexible members positioned one at each end thereof in depending relation thereto, means above said opening positioning said upper flexible member transversely there across in planes generally outwardly and downwardly from the plane of the wall and means at the sides of said opening positioning said vertical flexible members in planes generally outwardly and parallel with the plane of the wall and foldable hinge-like devices positioned between said wall and said flexible members and resilient means attached thereto for normally holding the foldable hinge-like devices in a first position extending outwardly from said wall and movable to a second position adjacent said wall.
Claim 2
Dependent Claim
135 words
A flexible dock seal for positioning on a wall about an opening therein and comprising a flexible inverted U-shaped device consisting of a horizontal upper flexible member and a pair of vertical flexible members positioned one at each end thereof in depending relation thereto, means above said opening positioning said upper flexible member transversely there across in planes generally outwardly and downwardly from the plane of the wall and means at the sides of said opening positioning said vertical flexible members in planes generally outwardly and parallel with the plane of the wall and foldable hinge-like devices positioned between said wall and said flexible members and resilient means attached thereto for normally holding the foldable hinge-like devices in a first position extending outwardly from said wall and movable to a second position adjacent said wall.
Claim 3
Dependent Claim
59 words
The flexible dock seal set forth in claim 1 and wherein said upper horizontal flexible member comprises a first portion extending outwardly from said wall and a second portion depending from the outer edge thereof and wherein said pair of vertical flexible members comprise first portions extending outwardly from said wall and second portions theron extending toward one another.
Claim 4
Dependent Claim
41 words
The flexible dock seal set forth in claim 1 and wherein said means above said opening and said means at the sides of said opening comprise members attached to said building wall and to the longitudinal edges of said flexible members.
Claim 5
Dependent Claim
51 words
The flexible dock seal set forth in claim 1 and wherein the foldable hinge-like devices comprise superimposed sections of flexible material defining flat pockets therebetween, sections of rigid material positioned in said flat pockets, said sections of flexible material being secured to one another and arranged to form said hinge-like structures.
Claim 6
Dependent Claim
50 words
The flexible dock seal set forth in claim 1 and wherein said resilient means comprises resilient cords attached to said foldable hinge-like devices midway between their ends and to fixed locations on said wall adjacent said dock seal and normally urging said foldable hinge-like devices to open and extended position.
References Cited (Backward Citations)
US2704574A
Cited
US2939467A
Cited
US3256440A
Cited
US3303615A
Cited
US3391502A
Cited
US3402960A
Cited
US3391503A
Cited
US3714745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |