Variable add-on weight device
Patent 4971305 Issued on November 20, 1990. Estimated Expiration Date: 
January 31, 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.
January 31, 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 2796269 3502329 3825253 Dumbbell-like add-on weight for conventional weight equipment Automatic weight selector Weight guide for exercising machine Dumbbell attachment Automatically adjustable exercise equipment, and control system and method therefor Weight adjustable auxiliary base unit for a weight lifting device Patent #: 4787628 InventorApplicationNo. 304444 filed on 01/31/1989US Classes:482/93Utilizing weight resistanceExaminersPrimary: Bahr, RobertAttorney, Agent or FirmInternational ClassA63B 021/062AbstractThis invention is a device which enables weight trainers to more conveniently select a particular weight and to make this weight selection with smaller weight increments than heretofore has been possible. In addition to the time-saving convenience feature, a further advantage is that the weight trainer can train more scientifically, by virtue of small weight increments. This invention enables the weight trainer to quickly select the desired, precise weight and to easily attach this weight to barbells or other weightlifting equipment. | |
