Abstract: A rotor can comprise a body having arcuate voids each presenting away from a rotation axis and, for each void, a vane. The vane is mounted to the body for pivotal movement between retracted and extended positions; is adapted to sweep the void in the manner in which a piston sweeps a cylinder during movement between the positions; and terminates in a tip. A stator defines the rotation axis; and has an annular surface which, in use, is swept by the tips during rotation of the body. The surface is positioned such that, in each rotation, each vane cycles between its extended and retracted positions. A sealing arrangement defines a pair of ports and, in combination with the rotor and stator, defines, in use, chambers that increase in volume when in communication with one of the ports and that decrease in volume when in communication with the other of the ports.

Abstract: A rotor can comprise a body having arcuate voids each presenting away from a rotation axis and, for each void, a vane. The vane is mounted to the body for pivotal movement between retracted and extended positions; is adapted to sweep the void in the manner in which a piston sweeps a cylinder during movement between the positions; and terminates in a tip. A stator defines the rotation axis; and has an annular surface which, in use, is swept by the tips during rotation of the body. The surface is positioned such that, in each rotation, each vane cycles between its extended and retracted positions. A sealing arrangement defines a pair of ports and, in combination with the rotor and stator, defines, in use, chambers that increase in volume when in communication with one of the ports and that decrease in volume when in communication with the other of the ports.

Abstract: An improvement to an expander is disclosed. The expander is of the type that has vanes that extend and retract from a rotor body during rotation and create chambers that increase and decrease in size. The improvement comprises, for each vane, for each vane, a pivot axis orientated parallel to the rotational axis and about which said each vane pivots between the extended and retracted positions.

Abstract: A truck bed extender including an elongated support tube having a first and a second end whereby the first end is adapted for securement in a trailer hitch mounted on a truck, and two support arms pivotally mounted at the second end of the elongated support tube, for pivotal rotation from a collapsed position generally alongside the elongated support tube, to an angled position extending upwardly away from the elongated support tube. The support arms, when rotated upward rest on two rectangular shaped cam adjusters that are pivotally mounted on the sides of the elongated support tube at the second end, just behind the support arms. The support arm height is adjusted by rotating the cam adjusters. A crossbar is removed from its stored position inside the hollow, elongated support tube and mounted with a removable lock pin perpendicular and on top of the support arms.

Abstract: An engine having a rotor including at least one slot and at least one combustion chamber used to form a cavity is provided. The engine also includes at least one vane rollably disposed in the slot, and a block for receiving the rotor, and having a first quadrant including an inlet port, a second quadrant, a third quadrant, and a fourth quadrant having an outlet port. The vane moves through the first quadrant, drawing air into the block and the cavity. The vane then moves through the second quadrant, compressing the air. The vane then moves through the third quadrant, combusting the air, and forcing the rotor to rotate. The vane then moves through the fourth quadrant, forcing the air out of the outlet port.

Abstract: A rotary machine is provided, having a stator forming a chamber for a rotor, the stator having two sidewalls defining opposite sides of the chamber and a substantially continuous, circumferentially extending inner wall, and at least one inlet and outlet. A rotor and stator define two cavities at opposite ends of the chamber. The rotor has at least two radially extending slots and at least two radially movable vanes having first and second primary rollers and first and second secondary rollers mounted on a radially inward section of the vane. Two roller cam devices are each provided on a respective one of the stator side walls and are positioned centrally adjacent opposite sides of the rotor. In use, outer tips of the vanes slidingly engage the inner wall of the stator. The primary rollers limit outward vane movement due to centrifugal forces. Secondary rollers limit and control inward vanes movement.

Abstract: A rotary machine is provided, having a stator forming a chamber for a rotor, the stator having two sidewalls defining opposite sides of the chamber and a substantially continuous, circumferentially extending inner wall, and at least one inlet and outlet. A rotor and stator define two cavities at opposite ends of the chamber. The rotor has at least two radially extending slots and at least two radially movable vanes having first and second primary rollers and first and second secondary rollers mounted on a radially inward section of the vane. Two roller cam devices are each provided on a respective one of the stator side walls and are positioned centrally adjacent opposite sides of the rotor. In use, outer tips of the vanes slidingly engage the inner wall of the stator. The primary rollers limit outward vane movement due to centrifugal forces. Secondary rollers limit and control inward vanes movement.

Abstract: An engine having a rotor including at least one slot and at least one combustion chamber used to form a cavity is provided. The engine also includes at least one vane rollably disposed in the slot, and a block for receiving the rotor, and having a first quadrant including an inlet port, a second quadrant, a third quadrant, and a fourth quadrant having an outlet port. The vane moves through the first quadrant, drawing air into the block and the cavity. The vane then moves through the second quadrant, compressing the air. The vane then moves through the third quadrant, combusting the air, and forcing the rotor to rotate. The vane then moves through the fourth quadrant, forcing the air out of the outlet port.

Abstract: A selectively operable extendable fulcrum device is described. The device includes a casing with a slot to selectively guide and lock a selectively telescoping rod into place when extended. A ridge on the inside of the casing provides a resting place for a compression spring. The compression spring is operable to selectively retract the telescoping rod back into its retracted position and keeps the telescoping rod and fulcrum head assembly securely in place when retracted. The fulcrum head provides added leverage needed to pull out nails from materials when it is retracted as well as providing added leverage for longer nails when the fulcrum head is extended. The casing and the associated components of the device can be press fit into any conventional hammer head member.

Abstract: A selectively operable extendable fulcrum device is described. The device includes a casing with a slot to selectively guide and lock a selectively telescoping rod into place when extended. A ridge on the inside of the casing provides a resting place for a compression spring. The compression spring is operable to selectively retract the telescoping rod back into its retracted position and keeps the telescoping rod and fulcrum head assembly securely in place when retracted. The fulcrum head provides added leverage needed to pull out nails from materials when it is retracted as well as providing added leverage for longer nails when the fulcrum head is extended. The casing and the associated components of the device can be press fit into any conventional hammer head member.

Abstract: The invention is directed to an arm exercising device having a base assembly with a base handle telescopically extendable from a first end of the base assembly. An arm actuator is pivotally mounted to the base assembly. A user interface is connected to the arm actuator to allow a user to pivot the arm actuator relative to the base assembly. A resistance medium is mounted between the arm actuator and the base assembly and provides resistance for the user as the arm actuator pivots in on or more directions with respect to the base assembly. In addition to providing a device for working the tendons and muscles of the shoulders and arms, this device is also collapsible for easy transport of the device. The base assembly and arm actuator are telescopic and are a fraction of their extended length when moved to the retracted position. Additionally, the user interface has a hollow cavity for receiving an holding an elbow pad that can be used to cushion the elbow of the user during operation.