US Patent 7344345 Captive shoulder nut having spring tie-down

Patent 7344345 was granted and assigned to Southco on March, 2008 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Southco

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7344345

Date of Patent

March 18, 2008

Patent Application Number

10855538

Date Filed

May 27, 2004

Patent Citations Received

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US Patent 11776872 Accordion heat sink

Patent Primary Examiner

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Katherine Mitchell

Patent abstract

A captive shoulder nut for a electronic module heat sink has a threaded nut portion and a tubular portion extending therefrom. A ramped section in the exterior wall of the tubular portion leads to a retaining groove adjacent the bottom face of the nut portion. A compression spring is slipped over the tubular portion to ride over the ramped section and be retained at one end in the retaining groove. The tubular portion is suitable to be inserted through a straight hole, whereof the inner diameter of the spring is larger than the hole. The free end of the tubular portion is suitable to be flared to a larger diameter than the hole, thereby establishing a captivation.