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US 4,580,417 AGranted
Coacting grooved earring post and serrated clutch
AssigneeT. Sardelli & Sons, Inc.
InventorVincent T. Sardelli
Life of this patent
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AssigneeT. Sardelli & Sons, Inc.
InventorVincent T. Sardelli
Estimating the term…
A clutch and post for pierced earrings is operative for retaining an earring on an earlobe of a wearer with increased effectiveness. The clutch comprises a base portion having an aperture therethrough for receiving the post, and a pair of rearwardly and inwardly curled resilient leaves which extend from the base portion and have serrations thereon. The serrations are transversely disposed on the leaves, and they are preferably arranged so that they define longitudinally extending ribs of adjacent serrations on the leaves. This structure strengthens the leaves and enables using a metal thickness up to 30% less than that of a similar clutch without the ribs. The post comprises an elongated substantially cylindrical member having a plurality of substantially circumferential grooves therein and it is receivable through the aperture in the base portion of the clutch and between the resilient leaves thereof so that the serrations of the leaves interengage the grooves to more securely retain the clutch on the post.
A clutch and post combination for pierced earrings comprising a clutch comprising a base portion having an aperture therethrough and a pair of inwardly curled resilient leaves which extend from said base portion and are biased to a postion wherein they substantially meet in face-to-face relation along the axis defined by said aperture, said leaves each having a plurality of serrations thereon, and an earring post detachably received first through said aperture and then in embracing engagement between said leaves, said post having a plurality of substantially annular grooves therein, said serrations interengaging said post in said grooves and cooperating with said grooves so that said grooves and serrations coact as means to retain said clutch on said post by causing said leaves to be resiliently curled inwardly to an increased extent so that they further embrace said post when a withdrawing force is applied to said post.
Dependencies are inferred from the claim text.