Yieldable restraining members for barbell weights
Patent 4773641 Issued on September 27, 1988. Estimated Expiration Date: 
February 17, 2007. 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.
February 17, 2007. 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 1716462 3606410 3747964 Frictional couplings Rotatable handhold for athletic equipment especially for barbells Jewelry clutch Clip on collar for dumbells and barbells Patent #: 4569105 InventorApplicationNo. 07/015737 filed on 02/17/1987US Classes:482/107, Having securing member (e.g., locking collar, etc.) for retaining weight on bar24/671, Partially blocking separate, nonresilient, access opening of cavity403/372ResilientExaminersPrimary: Apley, Richard J.Assistant: Bahr, Robert Attorney, Agent or FirmInternational ClassesA63B 21/06 (20060101)A63B 21/072 (20060101) AbstractCollars are provided for yieldingly restraining weights from leaving the ends of a barbell. Each collar surrounds the barbell shaft and contains a set of grooves which receive snugly O-rings made of resilient material. In the unstressed condition of each O-ring, the interior diameter is less than that of the barbell shaft. Preferably, the grooves have a generally square or trapezoidal cross-section, with a slightly widened mouth. A part of the collar can be gripped with the fingers to remove friction-platelock collars from the barbell. | |
