US 4,269,026 AGranted

Connector pin for link bracelets

AssigneeTimex Corporation

InventorsMarcel Bulle, Jean Vuillaume

Life of this patent

Estimating the term…

Loading patent…

Abstract

The invention provides an improved connector pin for use in connecting adjacent links of a bracelet, particularly a link watch band, together in releasable yet secure fashion so that one or more links can be readily removed with a simple cylindrical tool to adjust the length of the bracelet to the wrist size of the wearer. The connector pin is typically received in a transverse passage defined by coaxially aligned bores extending through adjacent links of the bracelet and includes an intermediate shaft adapted to be disposed in the transverse passage defined by the bores to provide an axis for relative rotation between adjacent links, thereby imparting flexibility to the bracelet so that it conforms to the wrist shape of the wearer, and an enlarged retaining head at opposite ends of the intermediate shaft with each retaining head being bifurcated so as to be compressible in size to enable removal of the connector pin simply by pushing one of the retaining heads through the transverse passage and out the outer side. In a particularly preferred embodiment, the bores defining the transverse passage through adjacent links include enlarged end chambers which receive and conceal the enlarged, bifurcated retaining heads of the connector pin from view in a functionally and aesthetically advantageous manner.

Claims2

Dependent claims

An improved flexible bracelet of the type having a plurality of links each with at least one projecting tongue at one end and spaced projecting lugs defining at least one groove at the other end, the links being arranged in end-to-end relation with the tongue of one link received in the groove of the adjacent link to provide a plurality of tongue and groove joints along the length of the bracelet, characterized in that:

(a) the tongue of each link includes a cylindrical bore extending transversely therethrough and the spaced lugs of each link each include an enlarged chamber outwardly tapered, truncated-conical in shape extending at least partially transversely therethrough in communication with said tongue bore in coaxial alignment therewith to define a transverse passage with open ends through each joint when the links are arranged end-to-end;
and
(b) a connector pin disposed in the transverse passage through each tongue and groove joint to hold adjacent links together in releasable yet secure fashion such that links can be readily removed from the bracelet for length adjustment purposes, said connector pin including an intermediate cylindrical shaft adapted to be disposed in the cylindrical bore of the tongue to provide an axis for relative rotation between adjacent links and also including an enlarged retaining head outwardly tapered, truncated-conical in shape at opposite ends of said intermediate shaft, said retaining heads each being received in a respective one of the enlarged lug chambers with each head being bifurcated so as to be compressible so that said connector pin can be easily removed from the passage through adjacent links simply by exerting axial force on one of said compressible retaining heads to force it into and through said passage and out the opposite end, thereby disengaging the adjacent links from one another.

(a) the tongue of each link includes a cylindrical bore extending transversely therethrough and the spaced lugs of each link each include an inner enlarged chamber outwardly-tapered, truncated-conical in shape in communication with the tongue bore and an outer enlarged cylindrical chamber in communication with the inner chamber to define a transverse passage through each joint when the links are arranged end-to-end;
and
(b) a connector pin disposed in the transverse passage through each tongue and groove joint to hold adjacent links together in releasable yet secure fashion such that links can be readily removed from the bracelet for length adjustment purposes, said connector pin including an intermediate cylindrical shaft for positioning in the cylindrical bore of the tongue to provide an axis for relative rotation between adjacent links and also including an enlarged retaining head at opposite ends of said intermediate shaft, each retaining head comprising an inner portion outwardly-tapered, truncated-conical in shape to be received in said inner chamber of similar shape in the lugs and further comprising an outer portion inwardly-tapered, truncated-conical in shape to be received in said outer cylindrical chamber in the lugs and terminating in an annular engagement surface adapted to be contacted by a cylindrical tool inserted into said outer chamber for link separation purposes, each retaining head being bifurcated through both the inner and outer portions so as to be compressible to enable the connector pin to be easily removed by exerting axial force with said tool on the annular engagement surface to force the associated retaining head through and out of the passage, thereby disengaging the adjacent links from one another.

Dependencies are inferred from the claim text.