초록 ▼

A self locking chain device for locking a chain to a vehicle comprises an elongated cross bar having an upwardly extending arm attached to each end thereof. Each arm comprises first and second arbors which define a receiving slot for receiving a first interior link of a chain and configured in such

A self locking chain device for locking a chain to a vehicle comprises an elongated cross bar having an upwardly extending arm attached to each end thereof. Each arm comprises first and second arbors which define a receiving slot for receiving a first interior link of a chain and configured in such a manner to enable two adjacent contiguous links to lock the interior link therein. Both first and second arbors are provided with cusps or projections for limiting passage of the chain link to and from the receiving slot. The first arbor also is provided with a concavity. A second contiguous or selected link, serving as a locking link, is slid over and down the first arbor and to the concavity, thereby double locking the first interior link since the opening between the cusps or projections is less than the combined diameter of the interior link and locking link. In this manner, the device effectively double locks the chain, prohibiting exit of the interior link without first removing the locking link from the first arbor.

대표청구항 ▼

[ I claim:] [1.] A self locking chain device comprising(a) an elongated cross bar having first and second ends; and(b) two upwardly extending arms attached to said first and second ends respectively, each of said arms comprising first and second arbors which define a receiving slot, said receiving s

[ I claim:] [1.] A self locking chain device comprising(a) an elongated cross bar having first and second ends; and(b) two upwardly extending arms attached to said first and second ends respectively, each of said arms comprising first and second arbors which define a receiving slot, said receiving slot being configured in such a manner to receive a first interior link of a chain, said first arbor having a concave configured in such a manner to engage a second link of a chain,wherein, when said first interior link is placed within said receiving slot, the two links adjacent and contiguous to said first interior link lock said first interior link within said receiving slot, and wherein, when said second link of a chain is slid over said first arbor and engages said concave, said first interior link is locked between said first and second arbors until said second link is removed from said first arbor.