US3799070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Freight retaining bar
Assignee: Railway Engineering and Supply Co Inc
•
Filing: 1972-04-27
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Granted: 1974-03-26
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Expires: 1992-04-27
Abstract
Abstract A load restraining system particularly useful for restraining freight in railroad freight cars. The restraining system includes vertically spaced belt rails horizontally mounted along the opposite side walls of the freight car. A cross bar extends between the opposite walls and has end clamps mounted on its opposite ends for engagement with the belt rails. The end clamps may be selectively used with a variety of belt rails. Each end clamp includes a rigid support member having a rearwardly projecting portion which interconnects with the cross bar, and a frontwardly projecting hooked portion for selective interlocking engagement with both upwardly opening apertures or grooves and frontwardly opening apertures, both continuous and discontinuous with the upwardly opening apertures or grooves, in various types of belt rails. An intermediate portion is also provided on the support member for defining a housing which receives a movable member. The movable member selectively engages the side wall or an aperture in the side wall of the belt rail.
Inventors
- 👤 A Munson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:14
CPC Classifications
B; B61; B61D; B61D45/00; B61D45/001
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
245 words
In load restraining systems of the type having spaced belt rails mounted on opposite side walls of a load carrying chamber, a cross bar extending between said opposite side walls, end clamps mounted on the opposite ends of said cross bar, said spaced belt rails being of various different types including those having upwardly opening elongated grooves, upwardly opening longitudinally spaced apertures, frontwardly opening longitudinally spaced slots, and frontwardly opening longitudinally spaced apertures, each end clamp including a support member, a rearwardly projecting portion for interconnecting wiTh each end of said cross bar, and a front portion on said support member for interlocking connection with said belt rails, the improvement comprising an improved end clamp operatively interconnectable for load restraining purposes with any of said different types of belt rails, said front portion including a pair of fixed upper frontwardly and downwardly projecting hook members, said hook members being laterally spaced from each other an amount substantially equivalent to the said spacing of said upwardly opening apertures, said frontwardly opening slots, and said frontwardly opening apertures, said hook members being selectively receivable in any of said grooves, apertures, and slots of said belt rail, said front portion having lower locking means slidable in a direction longitudinal of said cross bar, said movable locking means selectively positively interlocking with said frontwardly opening slots and said frontwardly opening apertures only and only when said hook members are in interlocking relationship with said upwardly opening apertures and grooves.
Claim 2
Dependent Claim
245 words
In load restraining systems of the type having spaced belt rails mounted on opposite side walls of a load carrying chamber, a cross bar extending between said opposite side walls, end clamps mounted on the opposite ends of said cross bar, said spaced belt rails being of various different types including those having upwardly opening elongated grooves, upwardly opening longitudinally spaced apertures, frontwardly opening longitudinally spaced slots, and frontwardly opening longitudinally spaced apertures, each end clamp including a support member, a rearwardly projecting portion for interconnecting wiTh each end of said cross bar, and a front portion on said support member for interlocking connection with said belt rails, the improvement comprising an improved end clamp operatively interconnectable for load restraining purposes with any of said different types of belt rails, said front portion including a pair of fixed upper frontwardly and downwardly projecting hook members, said hook members being laterally spaced from each other an amount substantially equivalent to the said spacing of said upwardly opening apertures, said frontwardly opening slots, and said frontwardly opening apertures, said hook members being selectively receivable in any of said grooves, apertures, and slots of said belt rail, said front portion having lower locking means slidable in a direction longitudinal of said cross bar, said movable locking means selectively positively interlocking with said frontwardly opening slots and said frontwardly opening apertures only and only when said hook members are in interlocking relationship with said upwardly opening apertures and grooves.
Claim 3
Dependent Claim
110 words
The device of claim 1 wherein said support member includes an intermediate portion which defines a housing, and said movable locking means is spaced below said hook members and is received at least partially within said housing, said movable locking means being aligned with an imaginery line which is substantially equidistant between said hook members, said latch member being slidable only in a direction longitudinal of the longitudinal axis of the cross bar, and being selectively received only in those belt rails having frontwardly opening longitudinally spaced slots and frontwardly opening longitudinally spaced apertures, said locking means being the only movable member used for locking engagement with said belt rails.
Claim 4
Dependent Claim
25 words
The device of claim 2 wherein said support member including said rearwardly projecting portion, said intermediate portion, and said hook members are of unitary construction.
Claim 5
Dependent Claim
26 words
The device of claim 1 wherein said rearwardly projecting portion includes means for movably mounting at least one of said end clamps on said cross bar.
Claim 6
Dependent Claim
19 words
The device of claim 4 including means for normally biasing said end clamp longitudinally outwardly from said cross bar.
Claim 7
Dependent Claim
35 words
The device of claim 1 including a rigid outwardly projecting portion spaced intermediate said movable locking means and said hook members for selectively abutting against upright surfaces of selected ones of said different belt rails.
Claim 8
Dependent Claim
41 words
The device of claim 1 including a spring member for normally biasing said movable latch means laterally outwardly from said cross bar and into positive engagement with said selected frontwardly opening longitudinally spaced slots and said frontwardly opening longitudinally spaced apertures.
Claim 9
Dependent Claim
38 words
The device of claim 1 including handle means on said movable locking means projecting laterally from said support member for manual operation of said movable latching means for accomplishing disengagement of said end clamp from said belt rail.
Claim 10
Dependent Claim
40 words
The device of claim 1 wherein said cross bar comprises a hollow bar, a housing is fixedly received within an outer end of said hollow bar, said housing including means for receiving said rearwardly projecting portion of said end clamp.
Claim 11
Dependent Claim
48 words
The device of claim 1 wherein said belt rail comprises a top wall and a front wall, a plurality of apertures are spaced longitudinally along said belt rails for receiving said hook portions, and elongated apertures are provided in said front wall for receiving said movable locking means.
Claim 12
Dependent Claim
41 words
The device of claim 1 wherein said movable locking means includes an upper rigid portion and a spaced lower rigid portion, being selectively received by said frontwardly opening apertures and both said portions being selectively received by said frontwardly opening slots.
Claim 13
Dependent Claim
34 words
The device of claim 1 wherein said movable locking means selectively bears with pressure against an upright wall of said belt rail when not positively enGaging one of said frontwardly opening apertures or slots.
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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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |