Abstract: In one embodiment, a portable photovoltaic assembly is disclosed. In particular, in one example embodiment, the portable photovoltaic assembly described herein comprises: a solar panel platform; a plurality of solar panel holders affixed to a front of the solar panel platform and configured to hold one or more solar panels; a back support extending from a back of the solar panel platform at an angle between the solar panel platform and the back support; and one or more link arms removably connected between the solar panel platform and the back support to hold the angle between the solar panel platform and the back support. Other embodiments are further described herein that provide for portability and adjustability in an easy-to-use manner.

Abstract: A lock includes a stationary key mass having a first key mass bore and a keyway, and a movable spring mass including a first spring mass bore. A first spring mass pin is mounted in the first spring mass bore, and a first key mass pin is mounted in the first key mass bore for reciprocation between a locked position immobilizing the spring mass and an unlocked position unconstraining motion in at least one direction. The unlocked position is a function of the presence of a matching key in the keyway. Multiple key mass and spring mass pins can be used, some or all of which can have stepped configurations, and corresponding single-bladed or multi-bladed keys, or multiple keys, can be used. The keys can be straight or curved in any of various planes, or they can be straight but flexible to match curved keyways. Curves can be unidirectional or compound. Relative motion between the key mass and spring mass can be in a plane or along straight line or circular.

Abstract: A lock includes a stationary key mass having a key mass bore and a keyway, and a movable spring mass having a spring mass bore. A spring mass pin is mounted in the spring mass bore, and a key mass pin is mounted in the key mass bore for reciprocation between a locked position immobilizing the spring mass and an unlocked position unconstraining motion. The unlocked position is a function of the presence of a matching key in the keyway. Multiple key mass and spring mass pins can be used, and some can have stepped configurations. Corresponding single-bladed or multi-bladed keys, or multiple keys, can be used. The keys can be straight or curved or flexible to match curved keyways.

Abstract: A lock includes a stationary key mass having a first key mass bore and a keyway, and a movable spring mass including a first spring mass bore. A first spring mass pin is mounted in the first spring mass bore, and a first key mass pin is mounted in the first key mass bore for reciprocation between a locked position immobilizing the spring mass and an unlocked position unconstraining motion in at least one direction. The unlocked position is a function of the presence of a matching key in the keyway. Multiple key mass and spring mass pins can be used, some or all of which can have stepped configurations, and corresponding single-bladed or multi-bladed keys, or multiple keys, can be used. The keys can be straight or curved in any of various planes, or they can be straight but flexible to match curved keyways. Curves can be unidirectional or compound. Relative motion between the key mass and spring mass can be in a plane or along straight line or circular.

Abstract: A system of apparatus for use with handicapped or disabled patients. The apparatus includes a mobile platform which removably mounts a patient support module which can be a chair or commode seat. Lift module means is attached to the mobile platform for lifting or lowering the patient from or to a bed or other structure. In certain embodiments a body harness is suspended by the lift module for supporting the patient upright so that the apparatus can be used as a therapeutic walking exerciser. In another embodiment, a body sling supported from the lift module provides support for the patient's arms for use as a therapeutic exerciser. The method of operation permits the apparatus, with the support module chair removed, to be moved to a position where the lift module is centered over the patient on a bed, automobile seat or other structure to facilitate lifting and transporting the patient. This method simplifies the transfer of a patient.