US3826049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loading dock shelter with independently movable head curtain
Assignee: DUBUQUE AWNING AND TENT Co
•
Filing: 1973-02-07
•
Granted: 1974-07-30
•
Expires: 1993-02-07
Abstract
Abstract A loading dock shelter embodying a head curtain which is independently, and automatically retractable and extensible.
Inventors
- 👤 C Frommelt
- 👤 S Frommelt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:40
CPC Classifications
B; B65; B65G; B65G69/00; B65G69/008
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
127 words
A loading dock shelter comprising a. a front cover, b. means for supporting said cover in position to extend along the top and sides of a doorway in a warehouse wall in outwardly projecting relation to said wall, c. said cover including a top panel mounted on said supporting means in position to extend across the upper portion of said doorway in position to engage the top of a truck backed into operative position relative to said doorway for loading and unloading thereof, and d. said supporting means including means operatively connected to said top panel for 1. supporting said top panel independently of the remainder of said cover, and 2. permitting said top panel to move, as a unit inwardly and outwardly relative to said wall.
Claim 2
Dependent Claim
127 words
A loading dock shelter comprising a. a front cover, b. means for supporting said cover in position to extend along the top and sides of a doorway in a warehouse wall in outwardly projecting relation to said wall, c. said cover including a top panel mounted on said supporting means in position to extend across the upper portion of said doorway in position to engage the top of a truck backed into operative position relative to said doorway for loading and unloading thereof, and d. said supporting means including means operatively connected to said top panel for 1. supporting said top panel independently of the remainder of said cover, and 2. permitting said top panel to move, as a unit inwardly and outwardly relative to said wall.
Claim 3
Dependent Claim
16 words
permitting said top panel to move, as a unit inwardly and outwardly relative to said wall.
Claim 4
Dependent Claim
16 words
permitting said top panel to move, as a unit inwardly and outwardly relative to said wall.
Claim 5
Dependent Claim
13 words
A loading dock shelter comprising a. a front cover b. said cover comprising
Claim 6
Dependent Claim
13 words
A loading dock shelter comprising a. a front cover b. said cover comprising
Claim 7
Dependent Claim
127 words
two side panels, c. means for supporting said side panels outwardly of said wall in position to extend downwardly along respective sides of said doorway and horizontally across said doorway toward the other of said side panels in position to engage the sides of a truck backed into operative position relative to said doorway for loading and unloading thereof, and d. other means for supporting said top panel outwardly of Said wall in position to extend across the upper portion of said doorway in position to engage the top of said truck when the latter is disposed in said operative position, e. said other means being movable independently of said first mentioned means for permitting said top panel to move inwardly and outwardly relative to said wall.
Claim 8
Dependent Claim
127 words
two side panels, c. means for supporting said side panels outwardly of said wall in position to extend downwardly along respective sides of said doorway and horizontally across said doorway toward the other of said side panels in position to engage the sides of a truck backed into operative position relative to said doorway for loading and unloading thereof, and d. other means for supporting said top panel outwardly of Said wall in position to extend across the upper portion of said doorway in position to engage the top of said truck when the latter is disposed in said operative position, e. said other means being movable independently of said first mentioned means for permitting said top panel to move inwardly and outwardly relative to said wall.
Claim 9
Dependent Claim
132 words
two side panels, c. means for supporting said side panels outwardly of said wall in position to extend downwardly along respective sides of said doorway and horizontally across said doorway toward the other of said side panels in position to engage the sides of a truck backed into operative position relative to said doorway for loading and unloading thereof, and d. other means for supporting said top panel outwardly of said wall in position to extend across the upper portion of said doorway in position to engage the top of said truck when the latter is disposed in said operative position, e. said other means being movable independently of said first mentioned means for permitting said top panel to move inwardly and outwardly relative to said wall, f. said other means comprising
Claim 10
Dependent Claim
132 words
two side panels, c. means for supporting said side panels outwardly of said wall in position to extend downwardly along respective sides of said doorway and horizontally across said doorway toward the other of said side panels in position to engage the sides of a truck backed into operative position relative to said doorway for loading and unloading thereof, and d. other means for supporting said top panel outwardly of said wall in position to extend across the upper portion of said doorway in position to engage the top of said truck when the latter is disposed in said operative position, e. said other means being movable independently of said first mentioned means for permitting said top panel to move inwardly and outwardly relative to said wall, f. said other means comprising
Claim 11
Dependent Claim
24 words
carriages supportingly connected to said top panel and supported by said tracks for movement along the latter inwardly and outwardly relative to said wall.
Claim 12
Dependent Claim
24 words
carriages supportingly connected to said top panel and supported by said tracks for movement along the latter inwardly and outwardly relative to said wall.
Claim 13
Dependent Claim
9 words
two flexible side panels, d. said supporting means comprising
Claim 14
Dependent Claim
9 words
two flexible side panels, d. said supporting means comprising
Claim 15
Dependent Claim
52 words
means for supporting said top panel on the side of said side panels remote from said wall in position to extend across the upper portion of said doorway in position to engage the top of said truck when the latter is disposed in said operative position, e. said third mentioned means comprising
Claim 16
Dependent Claim
52 words
means for supporting said top panel on the side of said side panels remote from said wall in position to extend across the upper portion of said doorway in position to engage the top of said truck when the latter is disposed in said operative position, e. said third mentioned means comprising
Claim 17
Dependent Claim
24 words
other means mounted on and carried by said elongated means for movement therealong, f. said other means being supportingly connected to said top panel.
Claim 18
Dependent Claim
24 words
other means mounted on and carried by said elongated means for movement therealong, f. said other means being supportingly connected to said top panel.
Claim 19
Dependent Claim
9 words
two flexible side panels, d. said supporting means comprising
Claim 20
Dependent Claim
9 words
two flexible side panels, d. said supporting means comprising
Claim 21
Dependent Claim
52 words
means for supporting said top panel on the side of said side panels remote from said wall in position to extend across the upper portion of said doorway in position to engage the top of said truck when the latter is disposed in sAid operative position, e. said third mentioned means comprising
Claim 22
Dependent Claim
52 words
means for supporting said top panel on the side of said side panels remote from said wall in position to extend across the upper portion of said doorway in position to engage the top of said truck when the latter is disposed in sAid operative position, e. said third mentioned means comprising
Claim 23
Dependent Claim
13 words
disposed in underlying, substantially parallel relation to respective ones of said tracks, and
Claim 24
Dependent Claim
13 words
disposed in underlying, substantially parallel relation to respective ones of said tracks, and
Claim 25
Dependent Claim
19 words
operatively connected to spaced portions of said top panel for supporting said top panel for reciprocation with said carriages.
Claim 26
Dependent Claim
19 words
operatively connected to spaced portions of said top panel for supporting said top panel for reciprocation with said carriages.
Claim 27
Dependent Claim
79 words
other means mounted on and carried by said elongated means for movement therealong, f. said other means being supportingly connected to said top panel, g. said second mentioned means comprising a frame extending along the top and sides of said doorway and projecting outwardly from said wall, h. said elongated means comprising elongated spaced tracks supported by said frame and extending outwardly from said wall in substantially parallel relation to each other, and i. said other means comprising carriages
Claim 28
Dependent Claim
79 words
other means mounted on and carried by said elongated means for movement therealong, f. said other means being supportingly connected to said top panel, g. said second mentioned means comprising a frame extending along the top and sides of said doorway and projecting outwardly from said wall, h. said elongated means comprising elongated spaced tracks supported by said frame and extending outwardly from said wall in substantially parallel relation to each other, and i. said other means comprising carriages
Claim 29
Dependent Claim
9 words
two flexible side panels, d. said supporting means comprising
Claim 30
Dependent Claim
9 words
two flexible side panels, d. said supporting means comprising
Claim 31
Dependent Claim
47 words
means carried by said wheels and projecting downwardly therefrom through said openings into supporting relation to the upper edge portion of said top panel, and c. said means carried by said wheels are movable along said openings during such reciprocation of said carriages along said respective tracks.
Claim 32
Dependent Claim
47 words
means carried by said wheels and projecting downwardly therefrom through said openings into supporting relation to the upper edge portion of said top panel, and c. said means carried by said wheels are movable along said openings during such reciprocation of said carriages along said respective tracks.
Claim 33
Dependent Claim
88 words
other means mounted on and carried by said elongated means for movement therealong, f. said other means being supportingly connected to said top panel, g. said elongated means comprising track means projecting outwardly from said wall, h. said other means comprising carriage means mounted on said track means for reciprocation therealong, i. said top panel being supported by said carriage means for movement therewith, and j. said third mentioned means including spring means for yieldingly urging said carriage means outwardly away from said wall along said track means.
Claim 34
Dependent Claim
88 words
other means mounted on and carried by said elongated means for movement therealong, f. said other means being supportingly connected to said top panel, g. said elongated means comprising track means projecting outwardly from said wall, h. said other means comprising carriage means mounted on said track means for reciprocation therealong, i. said top panel being supported by said carriage means for movement therewith, and j. said third mentioned means including spring means for yieldingly urging said carriage means outwardly away from said wall along said track means.
Claim 35
Dependent Claim
19 words
having one end operatively connected to the upper edge portion of said top panel for supporting said top panel.
Claim 36
Dependent Claim
19 words
having one end operatively connected to the upper edge portion of said top panel for supporting said top panel.
Claim 37
Dependent Claim
23 words
A loading dock shelter as defined in claim 2, and in which a. said other means are supported by said first mentioned means.
Claim 38
Dependent Claim
13 words
A loading dock shelter comprising a. a front cover b. said cover comprising
Claim 39
Dependent Claim
13 words
A loading dock shelter comprising a. a front cover b. said cover comprising
Claim 40
Dependent Claim
22 words
A loading dock shelter as defined in claim 4, and in which a. said tracks are supported from said first mentioned means.
Claim 41
Dependent Claim
43 words
A loading dock shelter comprising a. a front cover, and b. means for supporting said cover in position to extend along the top and sides of a doorway in a warehouse wall in outwardly projecting relation to said wall, c. said cover comprising
Claim 42
Dependent Claim
43 words
A loading dock shelter comprising a. a front cover, and b. means for supporting said cover in position to extend along the top and sides of a doorway in a warehouse wall in outwardly projecting relation to said wall, c. said cover comprising
Claim 43
Dependent Claim
43 words
A loading dock shelter comprising a. a front cover and b. means for supporting said cover in position to extend along the top and sides of a doorway in a warehouse wall in outwardly projecting relation to said wall, c. said cover comprising
Claim 44
Dependent Claim
43 words
A loading dock shelter comprising a. a front cover and b. means for supporting said cover in position to extend along the top and sides of a doorway in a warehouse wall in outwardly projecting relation to said wall, c. said cover comprising
Claim 45
Dependent Claim
43 words
A loading dock shelter comprising a. a front cover, and b. means for supporting said cover in position to extend along the top and sides of a doorway in a warehouse wall in outwardly projecting relation to said wall, c. said cover comprising
Claim 46
Dependent Claim
43 words
A loading dock shelter comprising a. a front cover, and b. means for supporting said cover in position to extend along the top and sides of a doorway in a warehouse wall in outwardly projecting relation to said wall, c. said cover comprising
Claim 47
Dependent Claim
58 words
A loading dock shelter as defined in claim 8, and in which a. said third mentioned means includes elongated compression springs mounted in said tracks between said wall and said carriages and operatively engaged with said carriages mounted on said respective ones of said tracks for yieldingly urging said carriages outwardly along said track away from said wall.
Claim 48
Dependent Claim
31 words
A loading dock shelter as defined in claim 9, and in which a. said tracks comprise elongated tubular members having longitudinally extending openings in the bottom thereof, b. said carriages comprise
Claim 49
Dependent Claim
18 words
A loading dock shelter as defined in claim 10, and in which a. said carriages include elongated members
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |