The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 04, 1988
Filed:
May. 01, 1987
Robert M Wilson, Vanceboro, NC (US);
Other;
Abstract
An elongated shaft includes a spring anchoring point at each end and in the center. A pair of sleeves are slidably positioned on the shaft, one between the central anchoring point and each end anchoring point. Each sleeve is joined to the anchor point on either side thereof by a coil spring. Each coil spring is identical in length and tension strength, and is formed from steel wire of a selected gauge. The coil spring tension strength of all the springs on the bar is modified by varying the width distance between each coil turn in a selected segment or segments of each spring. In use, each spring may be compressed toward or extended away from the associated anchor point, depending upon the particular exercise.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile