Abstract: A lower back exercise and apparatus for correctly performing the exercise. The exercise avoids hyperextension of lower back muscles, tissue and cartilage. The exercise of those areas promotes blood flow to injured muscles and tissue, and encourages healing. The exercise lowers the legs from the horizontal through the vertical rest position, in a total motion substantially greater than 90 degrees, using the same muscle groups to push the legs past the vertical rest position.

Abstract: A retaining tip for releasable attachment to a rod having a cross-section in which two arms are attached to one another at one end of each by a circular wound helical spring. The other end of each arm is configured to retain parts or objects which are to be processed. The circular spring may be mechanically opened to receive the circular rod and then released to frictionally engage the rod. Clips utilizing a similar design are used to join cross members to build up an electroplating or painting fixture. An alternative support rack is constructed by means of releasable attachment of side bar members to cross bars.

Abstract: An apparatus and method for using same for extracting energy from waves, including near-shore waves by imparting momentum to an energy roller or energy car. The energy roller or car is moved along a flexible floating belt by the action of waves on the shape of the flexible floating belt. The invention also provides for a hydrodynamically shaped float to be driven along a rigid floating structure by the action of a wave at the rear of the float.

Abstract: A retaining tip for releasable attachment to a rod of circular cross-section in which two arms are attached to one another at one end of each by a circular wound helical spring. The other end of each arm is configured to retain parts or objects which are to be processed. The circular spring may be mechanically opened to receive the circular rod and then released to frictionally engage the rod. Clips utilizing a similar design are used to join cross members to build up an electroplating fixture.

Abstract: A method and apparatus for better sealing a piston to its cylinder, to effectively eliminate efficiency loss due to leakage of the high-temperature, high pressure driving gas around the edges of the piston. An elastomeric seal is located so as to seal the piston and cylinder combination at a minimum sufficient distance from the combustion chamber to prevent heat damage to the seal material by conduction of heat through the piston or cylinder material.

Abstract: Apparatus and process for use in converting the energy of ocean waves to useful power form wherein two floats supporting a rigid structure are spaced apart to maximize the end movement of said rigid structure, and an energy extraction device preferably of the cylinder and piston type is operated by the movement of the end of said structure producing movements of four times the wave height when the two floats are spaced one-half the wave length of the wave and the energy conversion device is spaced further away from said floats by a similar amount.

Abstract: A method and apparatus for protecting a relatively low temperature rated pressure seal from a relatively high temperature gas residing between a cylinder head and its associated piston. A low temperature rated pressure seal as for example an elastomeric seal is protected from high temperature gas in a heat engine, potentially in excess of 2,000.degree. F. (1093.degree. C.) by the use of an intermediary fluid that is trapped in a reservoir in the head of the cylinder said seal being maintained in a liquid fashion by a skirt extension from the head of the piston into the reservoir holding the described liquid, the intermediary liquid also being in contact with the elastomeric seal in the space between the piston and the cylinder.