Back to results
US 4,280,726 AGranted
Keyless lockable security devices
AssigneeAardee Spring & Lock Company Limited
InventorJohn McCoag
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeAardee Spring & Lock Company Limited
InventorJohn McCoag
Estimating the term…
Keyless lockable security devices in the form of a padlock or clevis pin for use in securing bulk containers in which the devices consist of a body member having at least one blind bore therein and a male member having limbs corresponding to the number of blind bores, insertable in the bore or bores. Each of the bores and the limbs have an annular recessed portion of substantially crochet hook form and an annular member of spring steel split cross-sectionally in the form of a C-ring is located in the recessed portion of the body member. The male limb is driven into the bore until its recessed portion is engaged by the annular member to prevent withdrawal of the limb from the bore. The body member may have two parallel bores, the male member being in the form of a substantially U-shaped shackle with its limbs insertable in the respective bores and the free end surfaces of the limbs are provided with aligned slots into which is inserted a pin through a bore transverse to the blind bores to prevent rotation of the limbs if the limbs are separated from one another.
A keyless lockable security device comprising a body member having at last one blind bore therein, said bore having an annular recessed portion intermediate its ends, in cross section the recessed portion has an inclined side surface extending from the bottom of the recess to the edge at one sie in the direction of the open end of the bore and the opposite side surface is concave from the bottom of the recess to the other edge, a male member having at least one limb insertable in its respective blind bore, said limb having an annular recessed portion adjacent a free end thereof, in cross-section the recessed portion of the limb has an inclined side surface extending from the bottom of the recess to one edge and an opposite concave side surface extending from the bottom of the recess to the other edge, an annular member of spring steel, split cross-sectionally in the form of a C-ring, is located in the annular recessed portion of its respective blind bore for engagement in the annular recessed portion of its associated limb when the limb is inserted into its respective blind bore to prevent withdrawal of the limb from the bore.
Dependencies are inferred from the claim text.