Closure fasteners – Seal bolts
Patent
1997-09-17
2000-03-21
Boucher, Darnell M.
Closure fasteners
Seal bolts
292318, E05B 3902
Patent
active
060393653
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a seal-locking mechanism intended for seal-locking of railway wagons and containers and other objects such as, for example, warehouses, depots, shops, trade pavillions, tanks, etc., and may be used for seal-locking of cargo transportable in railway wagons and containers, trucks and other transportation means, for seal-locking of hatches of, for example, refrigerators, grain freighters, vans and other automobiles.
BACKGROUND ART
The closest prior art has been described in the device according to USSR Inventors' Certificate No. 1288747, Int.Cl. G 09 F 3/03, 1984, which comprises a body with a head, a fixing and a locking element, wherein the fixing element is made in the form of a case and a stop, the locking element is made in the form of a spring.
Of the major drawbacks of said device is a complexity of its manufacture associated with a complicated threading inside a nut. Moreover, the use of a specific tool is needed to lock the device, which is inconvenient during use; the more so, as it is necessary to simultaneously hold up the nut and the casing with one hand on the inside of a lug of an object being locked, whereas the other hand serves to apply a specific tool to a body's head on the outside of said lug of an object being locked. The known device is of no use during possible displacement of a lug in railway wagons and can not be used for seal-locking of cargo transportable in railway wagons and containers. Its individual manufacture is needed for using in objects with different dimensions of lugs and distances between them, which creates difficulties and drawbacks during operation.
SUMMARY OF THE PRESENT INVENTION
The present invention is made in order to solve the above problems included in the prior arts, and an object of this invention is to provide a seal-locking mechanism which, as compared to previously known devices of the same purpose, allows simplification of the manufacturing process, convenience and reliability during service and is re-usable when replacing only one part.
The aforementioned advantages of the seal-locking mechanism are provided in accordance with the present invention in which a locking element is made in the form of a cylindrical rod having a sharpened end on one side and a head on the other side, wherein a part of a lateral surface of the cylindrical rod is made with unilaterally beveled serrations, a fixing element is made in the form of at least two separate elements with an outer conical surface which conforms an inner conical surface made in a body and an inner surface on which unilaterally beveled serrations are made to contact with respective serrations of the locking element, said fixing elements are spring-loaded with respect to the body, a required information is applied to the face of the locking element head in close proximity to which, on a smooth cylindrical surface of the locking element, there is provided a ring-shaped boring, a cylindrical bushing is mounted above said boring with the possibility of turning over.
Besides, the present seal-locking mechanism may be provided with a cap made with an outer cylindrical surface and a head which conform the outer cylindrical surface and the head of the body, said cap may be located on the body over bearing surfaces provided on the body and on the cap with the formation of a single outer cylindrical surface of the seal-locking mechanism, and the cap head comprises an inner cavity to locate therein said locking element head.
The present invention will now be more particularly described, by way of example, with reference to the drawings in which:
FIG. 1 shows an embodiment of the seal-locking mechanism;
FIG. 2 shows the same embodiment, but having an additional cap.
FIG. 3 shows a top view of the of the seal-locking mechanism.
FIG. 4 shows a top view of the fixing means and a cross-sectional view of the fixing means.
Referring now to the drawings, there is shown a view of the present invention, which comprises a body 1 with a head 2, a locking element 3 made in
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Boucher Darnell M.
Estremsky Gary
Kang Gregory B.
Nath Gary M.
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