Barbell weight lock
Patent 4955603 Issued on September 11, 1990. Estimated Expiration Date: 
May 5, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 5, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2640696 2796296 Quick-bolt locking system Hand grasp device Yieldable restraining members for barbell weights Exercise lifting bar with self-contained weight mounts Patent #: 4787629 InventorApplicationNo. 347972 filed on 05/05/1989US Classes:482/107, Having securing member (e.g., locking collar, etc.) for retaining weight on bar403/259, Between rod shoulder and terminal nut411/433Including movable threaded segmentsExaminersPrimary: Bahr, RobertAttorney, Agent or FirmForeign Patent References
International ClassA63B 021/075Foreign Application Priority Data1988-05-06 DEAbstractExternally threaded opposite end portions of the bar of a barbell are insertable into the central apertures of cylindrical weights. Locking sleeves having manually retractable inward-projecting locking pins are fittable on the externally threaded bar end portions. With a locking pin in its projected position, the locking sleeve can be rotated like a conventional nut so as to advance toward or away from the weights. With the locking pin held in a retracted position, the locking sleeve can slide longitudinally in either direction along the threaded bar end portion without rotating.Field of SearchBetween rod shoulder and terminal nutCoaxial collar or shoulder or rod is clamp element Radially sliding catch Including movable threaded segments Discrete segments carried within a housing Including a discrete, threaded member carrying the tapered surface and threadedly engaging one of the threaded elements Engaging a threaded exterior provided on the segmented element Cam or cone grip Half nut type | |
