Patent US3665537A successfully refreshed from Google Patents.
US3665537A
Expired / Lapsed
US
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Dock board
Assignee: Dresser Industries Inc
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Filing: 1970-04-07
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Granted: 1972-05-30
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Expires: 1990-04-07
Abstract
Abstract A positionable dock board or gangway for service bridging the space separation between railway box-cars and a cargo shipping and/or receiving dock situated adjacent the railway track. The dock board unit hereof includes a platform securable to the dock facing with which it is to be used in a manner providing for pivotal platform movement between a horizontal service position and a vertical storage position. When in the vertical relation, the unit affords increased ease of longitudinal positioning for traversing between cars and precise locating at a car door. Transversely extending adjustable support arms enable accommodating variable spacing between dock and car while turnover plates at the free end have an adjustable pivot axis permitting greater angular offset and consequent ease of cargo handling in immediately adjacent car areas.
Inventors
- 👤 Ernest Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:32
CPC Classifications
B; B65; B65G; B65G69/00; B65G69/28; B65G69/2805; B65G69/2811
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
284 words
In a dock board for providing spanned support between a dock area and an adjacently parked cargo carrier including a transversely extending support means adapted to be securably mounted to a dock with which the dock board to be used, and a platform structure having a floor surface, mounting means at a first end of said platform proximate said support means for connecting said platform structure to said support means; said mounting means comprising in combination: a. a frame member intermediately extending between said support means and said first platform end; b. pivot means connecting said platform structure to said frame member for pivoting said platform structure between a first position placing said floor surface in a generally horizontal relation relative to the dock and a second position placing said floor surface in a generally vertical relation relative to the dock; c. a first rigid member secured to said support means extending laterally therefrom toward said frame member; d. a second rigid member secured to said frame member extending laterally therefrom toward said support means; e. said rigid members terminating at least partially superposed to each other for operatively effecting a friction hold between said frame member and said support means when said platform is in said first position; and f. wheel means on an axis substantially normal to the plane of said platform surface and secured to said platform structure for conjoint pivotal movement therewith, said wheel means being positioned when said platform is in said second position to peripherally engage said first rigid member and operatively effect frictional disengagement of said first and second rigid members for permitting relatively free transverse conveying movement of said platform structure together with said frame member.
Claim 2
Dependent Claim
284 words
In a dock board for providing spanned support between a dock area and an adjacently parked cargo carrier including a transversely extending support means adapted to be securably mounted to a dock with which the dock board to be used, and a platform structure having a floor surface, mounting means at a first end of said platform proximate said support means for connecting said platform structure to said support means; said mounting means comprising in combination: a. a frame member intermediately extending between said support means and said first platform end; b. pivot means connecting said platform structure to said frame member for pivoting said platform structure between a first position placing said floor surface in a generally horizontal relation relative to the dock and a second position placing said floor surface in a generally vertical relation relative to the dock; c. a first rigid member secured to said support means extending laterally therefrom toward said frame member; d. a second rigid member secured to said frame member extending laterally therefrom toward said support means; e. said rigid members terminating at least partially superposed to each other for operatively effecting a friction hold between said frame member and said support means when said platform is in said first position; and f. wheel means on an axis substantially normal to the plane of said platform surface and secured to said platform structure for conjoint pivotal movement therewith, said wheel means being positioned when said platform is in said second position to peripherally engage said first rigid member and operatively effect frictional disengagement of said first and second rigid members for permitting relatively free transverse conveying movement of said platform structure together with said frame member.
Claim 3
Dependent Claim
41 words
In a dock board according to claim 1 including second wheel means located on said frame beneath said platform and peripherally engageable with the dock face thereat in opposition to a pivot moment about the pivot axis of said frame member.
Claim 4
Dependent Claim
58 words
In a dock board according to claim 1 in which said rigid members also terminate at least partially juxtaposed to each other by a portion of said first rigid member comprising a transversely extending wheel engageable support of non-planar geometric configured cross section to receivably accommodate and guide the peripherally engageable surface of said fiRst mentioned wheel means.
Claim 5
Dependent Claim
30 words
In a dock board according to claim 3 in which said wheel engageable support has a circular cross section and the periphery of said wheel means is radially inward vee-shaped.
Claim 6
Dependent Claim
48 words
In a dock board according to claim 3 in which the at least partially juxtaposed portion of said second rigid member comprises an offset cooperating with said wheel engageable support of said first rigid member for effecting said friction hold when said platform is in said first position.
Claim 7
Dependent Claim
56 words
In a dock board according to claim 3 including second support means to support a second end of said platform opposite from said first end, said second support means being load bearing and adjustably extendable outward beyond the surface edge of said platform in a direction away from the dock to engage a cargo carrier thereat.
Claim 8
Dependent Claim
36 words
In a dock board according to claim 6 in which said platform includes means defining an elongated slot along at least one side edge thereof and said second support means is slidably movable within said slot.
Claim 9
Dependent Claim
65 words
In a dock board according to claim 7 in which said second support means comprises at least a pair of spaced apart arms in separate of said slots and each including a plurality of uniformly spaced apertures laterally extending in said arms and further including portable pin means manually insertable into selected of said apertures to secure a desired outward arm extension beyond said platform.
Claim 10
Dependent Claim
21 words
In a dock board according to claim 6 including a throwover plate pivotally connected at the second end of said platform.
Claim 11
Dependent Claim
42 words
In a dock board according to claim 9 in which the pivot axis of said throwover plate is shiftable from a position below the plane of said floor to a raised position permitting a flush overly of the plate on said floor.
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |