Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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US Patent 7121988 - Weight-training apparatus having selectable weight plates
US Patent Issued on October 17, 2006
Estimated Patent Expiration Date:
January 27, 2025Estimated 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.
Estimated Patent Expiration Date:
January 27, 2025Estimated 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.AbstractAn adjustable weight-training apparatus is provided having a plurality of weight plates, each of the weight plates including a protrusion. The weight-training apparatus has longitudinally opposing ends, each of the ends having longitudinally outer and inner groups of weight plates. A rotatable bar is also included in the apparatus and includes an inner control shaft and an outer control shaft. The inner control shaft is configured to rotate within the outer control shaft. The rotatable bar is configured to rotate within central holes of the weight plates. The inner control shaft has a first plurality of longitudinally spaced lobes. The inner control shaft is rotatable to position selected ones of the first plurality of lobes in engagement with the protrusions of selected weight plates of at least one of the outer groups of weight plates. The outer control shaft has a second plurality of longitudinally spaced lobes. The outer control shaft is rotatable to position selected ones of the second plurality of lobes in engagement with the protrusions of selected weight plates of at least one of the inner groups of weight plates.Other References
| InventorAssigneeApplicationNo. 11044410 filed on 01/27/2005US Classes:482/106, Handheld bar with weight at each end (e.g., barbell, dumbbell, etc.) or component thereof482/50, Having weight feature (e.g., dumbbell, etc.)482/101, Track or way guided user interface element482/107, Having securing member (e.g., locking collar, etc.) for retaining weight on bar482/108, Bar held by single hand of user (e.g., dumbbell, etc.)482/908, ADJUSTABLE482/111Utilizing fluid resistanceField of Search482/105, Weight worn on body of user482/106, Handheld bar with weight at each end (e.g., barbell, dumbbell, etc.) or component thereof482/107, Having securing member (e.g., locking collar, etc.) for retaining weight on bar482/108, Bar held by single hand of user (e.g., dumbbell, etc.)482/109, Club482/908ADJUSTABLEExaminersPrimary: Crow, Stephen R.Assistant: Chhabra, Arun Attorney, Agent or FirmUS Patent References5628716, Adjustable weight exercise deviceIssued on: 05/13/1997 Inventor: Brice5637064, Adjustable dumbbell Issued on: 06/10/1997 Inventor: Olson, et al.5769762, Exercise weight system Issued on: 06/23/1998 Inventor: Towley, III, et al.5839997, Weight-lifting apparatus and method Issued on: 11/24/1998 Inventor: Roth, et al.5876313, Weight stack methods and apparatus Issued on: 03/02/1999 Inventor: Krull5967952Collapsible aquatic/land weight training system Issued on: 10/19/1999 Inventor: Bronstein, et al. Foreign Patent References
International ClassesA63B 21/072A63B 21/075 A63B 21/062 A63B 23/16 |
