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US 4,903,963 AGranted
Abdominal muscle exerciser
OwnerByran R. Garnettinventor
Life of this patent
Estimating the term…
Abstract
An abdominal muscle exerciser includes a seat and a lever arm which is rotatable in directions toward and away from the seat. The seat and lever arm are attached to a base. A pneumatic cylinder is biased between the base and the lever arm. The cylinder has a resistance stroke which provides significant resistance against rotation of the lever arm in the direction toward the seat. A cross bar is mounted transverse to the lever arm and a pair of foot stirrups are rotatably mounted on the cross bar.
Claims11
An exerciser apparatus including:
- a seat attached to a base;
- a lever arm pivotally attached to the base and rotatable in directions toward and away from the seat;
- a pneumatic cylinder operatively connected between the base and the lever arm, the cylinder having a resistance stroke which provides significant resistance against rotation of the lever arm in the direction toward the seat, the cylinder having a free stroke which provides no significant resistance against rotation of the lever arm in the direction away from the seat;
- front and rear ends of the base;
- front and rear legs mounted transverse to the base on the front and rear ends of the base, respectively;
- a cross bar mounted transverse to the lever arm;
- and
- a pair of foot stirrups rotatably mounted on the cross bar.
5 more elements
An exerciser apparatus including:
- a seat attached to a base, the seat being adjustable in height;
- a lever arm pivotally attached to the base and rotatable in directions toward and away from the seat;
- a pneumatic cylinder operatively connected between the base and the lever arm, the cylinder having a resistance stroke which provides significant resistance against rotation of the lever arm in the direction toward the seat, the cylinder having a free stroke which provides no significant resistance against rotation of the lever arm in the direction away from the seat;
- front and rear ends of the base;
- front and rear legs mounted transverse to the base on the front and rear ends of the base, respectively;
- a cross bar mounted transverse to the lever arm;
- and
- a pair of foot stirrups mounted on the cross bar.
5 more elements
An abdominal muscle exerciser including:
- a seat;
- a lever arm rotatable in directions toward and away from the seat;
- a base to which the seat and the lever arm are attached;
- a pneumatic cylinder operatively connected between the base and the lever arm, the cylinder having a resistance stroke which provides significant resistance against rotation of the lever arm in the direction toward the seat;
- front and rear ends of the base;
- front and rear legs mounted transverse to the base on the front and rear ends of the base, respectively;
- a cross bar mounted transverse to the lever arm;
- and
- a pair of foot stirrups rotatably mounted on the cross bar.
6 more elements
An abdominal muscle exerciser including:
- a seat;
- a lever arm rotatable in directions toward and away from the seat;
- a base to which the seat and the lever arm are attached;
- a pneumatic cylinder operatively connected between the base and the lever arm, the cylinder having a resistance stroke which provides significant resistance against rotation of the lever arm in the direction toward the seat;
- front and rear ends of the base;
- front and rear legs mounted transverse to the base on the front and rear ends of the base, respectively;
- a cross bar mounted transverse to the lever arm;
- and
- a pair of foot stirrups mounted on the cross bar.
6 more elements
Dependencies are inferred from the claim text.