Abstract: An abdominal exercise device is disclosed. The exercise device can include a flexible substrate having a first end and a second end. At least one of the first end and the second end can be configured to move with respect to each other. The exercise device can also include a curved portion between the first end and the second end. The curved portion can be configured to flex upon application of a force to the flexible substrate.

Abstract: An abdominal exercise device is disclosed. The exercise device can include a flexible substrate having a first end and a second end. At least one of the first end and the second end can be configured to move with respect to each other. The exercise device can also include a curved portion between the first end and the second end. The curved portion can be configured to flex upon application of a force to the flexible substrate.

Abstract: An abdominal exercise device is disclosed. The exercise device can include a flexible substrate having a first end and a second end. At least one of the first end and the second end can be configured to move with respect to each other. The exercise device can also include a curved portion between the first end and the second end. The curved portion can be configured to flex upon application of a force to the flexible substrate.

Abstract: An exercise device includes a base, a pair of support arms, a pair of linear guides, and a pair of support arms. The base can include a lateral base support and a stabilizing support extending from the lateral base support in a non-parallel direction. The support arms can be rotatably coupled to and extending from the lateral base support. The support arms can have hinge ends and distal ends where the distal ends are non-linearly displaceable in a lateral direction with respect to the stabilizing support. The linear guides can have first ends and second ends, with the first ends rotatably coupled to the lateral base support and the second ends rotatably coupled to the pair of support arms. The linear guides can provide cushioning of displacement of the support arms. The support arms can be arranged at the distal ends of the support arms for supporting human limbs.

Abstract: An abdominal exercise device is disclosed. The exercise device can include a flexible substrate having a first end and a second end. At least one of the first end and the second end can be configured to move with respect to each other. The exercise device can also include a curved portion between the first end and the second end. The curved portion can be configured to flex upon application of a force to the flexible substrate.

Abstract: An exercise device is provided which comprises a base configured to support the exercise device, an arcuate path extending from the base, a limb support configured to receive a limb of a user and which moves along the arcuate path, and a resistance member attachable to the limb support and configured to provide resistance against movement of the limb support along the arcuate path.

Abstract: An exercise device is provided which comprises a base configured to support the exercise device, an arcuate path extending from to the base, a limb support configured to receive a limb of a user and which moves along the arcuate path, and a resistance member attachable to the limb support and configured to provide resistance against movement of the limb support along the arcuate path.

Abstract: An exercising device upon which one kneels and can exercise one's thighs and buttocks by pushing one's knees away from each other in a direction substantially parallel with a line through one's hip joints has a pair of longitudinal swing arms that are pivotally mounted at first ends thereof to a respective, upwardly extending, spaced apart pivot axes. The swing arms extend generally laterally outwardly from the respective pivot axes and can pivot about the respective pivot axes from a first position in which the swing arms are substantially parallel with each other to a second position in which distal ends of the swing arms diverge outwardly from each other so that the swing arms form an acute angle with each other.

Abstract: An exercise machine utilizing a new compression resistance device is disclosed. The machine is a “stepper”, meaning it is actuated by using a stepping motion by the user's feet. The construction and design of the exercise device is that activation twists the body in a manner to emulate skiing. Resistance is provided by a compression resistance mechanism. Compressible cylinders are positioned coaxially on a rod between two blocking bodies. As the machine is actuated, the rod is pulled through one of the bodies, thereby compressing the cylinders. The resistance mechanism is suitable for other applications then the disclosed exercise device.

Abstract: An exercise machine that simulates the movements made during snow skiing to exercise the muscles used during such movements includes a pair of elongate foot support arms with foot support portions mounted for simultaneous vertical and horizontal movement with the vertical movement having opposite orientations for the same direction of horizontal movement. Thus, as the foot support portions of the foot support arms move in the same horizontal direction to one side or the other, one foot support portion moves vertically upwardly while the other moves vertically downwardly so that such movement generally defines an X pattern. Movement of the foot support arms is preferably coordinated so that the arms move together in a desired manner with resistance to movement of the arms preferably being adjustable by a user of the machine to adjust the strenuousness of the exercise performed.

Abstract: A disc-shaped sealing device for use in temporarily blocking and sealing a plastic fitting in a drain, vent, waste plumbing system is molded as an integral, unitary piece from polymeric material. The sealing device comprises a circular disc and an angled flange extending outwardly and upwardly from the perimeter of the circular disc. The disc-shaped device fits snugly within a barrel of a plastic fitting such that the circular disc is coaxially received in the barrel of the plastic fitting and the angled flange mates with and lies against a bevel in the barrel of the plastic fitting. A lug extends downwardly from the circular disc. First and second elongate grooves are formed in one of the surfaces of the circular disc. These grooves have a common juncture positioned near the forward end of the lug, the grooves diverge and extending along the opposite sides of the lug to near the back end of the lug.

Abstract: A one-piece, molded sealing element which is installed in a test tee on a drain, vent, waste plumbing system. The sealing element is cup-shaped and fits within the test tee to dam water on the upstream side of the test tee for hydraulic testing of the plumbing system. The sealing element can be broken and removed from the test tee through the lateral opening in the tee following the hydraulic test of the plumbing system.