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:
Apr. 09, 1991
Filed:
Aug. 18, 1989
Applicant:
Inventor:
Martin A Van Der Hoeven, Carlsbad, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63B / ;
U.S. Cl.
CPC ...
272137 ; 272135 ;
Abstract
An exercise device for specific isolation and development of abdominal muscle groups comprises a deformable spring-resistance which is closely retained against the user's abdominal region and provision for tensioning the spring device with a dual-handle pulley system and an adjustable means for accurately controlling the spring tension and the resistance force that is pressed against the abdomen. When the device is in place and tensioned the user resists the tension by expanding the abdomen to exercise and thus develop the abdominal musculature.