Abstract: A dual-torsion-spring cord rolling device includes driving and transmission units. The driving unit has first and second torsion spring gears engaged with each other, a first torsion spring connecting the first and second torsion spring gears, a wheel adjacent to the first torsion spring gear, and a second torsion spring connecting the second torsion spring gear and the wheel. The transmission unit has first and second transmission gears rotatable synchronously by the driving of the second torsion spring gear, and two lift transmission cords attached to the first and second transmission gears respectively.

Abstract: A spring counterbalance apparatus and method consists of a shade system with a torque profile, where the shade system is connected with a drive shaft. A first spring system is connected with the drive shaft where the first spring system is a standard wound spring system. A second spring system is connected with the drive shaft where the second spring system is a reverse wound spring system and where, in combination, the first spring system and the second spring system produce a counterbalance torque profile approximately equal to the shade system torque profile.

Abstract: An energy storing device is disclosed. In the energy storing device of the present invention, energy from an energy generating unit is stored in the form of spring torsion and then is output steadily. The energy storing device of the present invention includes a plurality of cog-wheels, a plurality of torsion magnitude limiting units, a plurality of single-directional input bearings, a plurality of energy storing units and a plurality of speed enhancing cog-wheels. Each of the energy storing units includes at least two end rotational disc portions, which are connected with each other co-axially. A leaf spring unit is provided between each pair of rotational disc portions and one end of the leaf spring unit is bent in an opposite direction. In addition, the energy storing units may be connected in series or in parallel to increase the efficiencies in energy storage and energy output.

Abstract: The Thermally Active Mechanically Blooming Artificial Flower is an amusement device designed to open autonomously with exposure to sunlight and to close when cooled to ambient temperature. This device includes a novel application of Zylon cable and steel or plastic springs, in a thermomechanical actuator capable of producing torque and angular displacement with changes in temperature. The invention has a series of mechanical systems which translate the motion of the thermomechanical actuator into the opening and closing motion of a pattern of artificial flower petals.

Abstract: There is provided a power source device capable of obtaining power not only when springs or the like return but also when a handle for winding up the springs or the like are operated. The power source device comprises a main shaft connected to both the handle and a main power generation device, an auxiliary shaft connected to an auxiliary power generation device arranged side by side in parallel with the main shaft, the main spring and the auxiliary spring requiring less load to wind up than the main spring being installed between the main shaft and the auxiliary shaft via drums such that accumulation and release of elastic force of the springs are alternated on both shafts, wherein when the main shaft is normally rotated by the handle, elastic force accumulated in the auxiliary spring is applied in the direction of rotation of the main shaft as releasing force.

Abstract: A human-powered, electrical generation system for intermittently receiving mechanical energy from a human and storing that mechanical energy. The stored mechanical energy is used to turn a generator that produces electrical power that is stored in a rechargeable battery. An optional inverter converts the DC power stored in the battery to AC power. A mechanical energy controller is provided to regulates the release of the stored mechanical energy. This allows intermittent energy release so that an intermittent electrical load may be properly supplied over a relatively long period of time without need for repeated energy input from the human. Mechanical energy may be stored in a spring arrangement or in a pressurized hydraulic reservoir. Hand cranks, levers, and pedals in optional combination with a gear box or multi-speed hub may be provided to add energy to the mechanical energy storage apparatus.

Abstract: An elastic energy storage device has an energy storage unit which has an axial rod penetrating through a plurality of rotary disks and spiral springs. One side of each rotary disk is protruded with an outer edge buckling post and another side thereof is installed with an inner edge buckling post. Each two rotary disks are installed with a spiral spring. The casing is installed with a unidirectional power output shaft for driving the first rotary disk of the energy storage unit to rotate. The speed change box has an input shaft and an output shaft. The input shaft is connected or engaged to the rotary disk; and one of the rotary disks of the energy storage unit at an innermost side has a function of driving the input shaft to rotate. Thereby, the at least one spiral spring stores energy through a flywheel and then release the energy steadily.

Abstract: An elastic energy storage device has an energy storage unit which has an axial rod penetrating through a plurality of rotary disks and spiral springs. One side of each rotary disk is protruded with an outer edge buckling post and another side thereof is installed with an inner edge buckling post. Each two rotary disks are installed with a spiral spring. The casing is installed with a unidirectional power output shaft for driving the first rotary disk of the energy storage unit to rotate. The speed change box has an input shaft and an output shaft. The input shaft is connected or engaged to the rotary disk; and one of the rotary disks of the energy storage unit at an innermost side has a function of driving the input shaft to rotate. Thereby, the at least one spiral spring stores energy through a flywheel and then release the energy steadily.

Abstract: A spring driven apparatus includes power shafts mounted upon a base, torsion springs mounted about the power shafts, power gears attached to the power shafts, a drive shaft for transferring energy generated by the torsion springs to a drive flywheel and to a rewind flywheel which is connected to a cam which actuates ratchet members which rotates the power shafts to rewind the torsion springs. The spring driven apparatus can run because of the power generated by the torsion springs, which are partially unwound each time, which generates useful power that can be used to propel golf carts, home generators and similar applications and also generates energy which goes back into the rewinding and resetting of the torsion springs.

Abstract: A device is disclosed comprising (a) a first and second member in rotational alignment to each another; (b) a torsional resilient mechanism for providing torsional resilience between the first and second members, the torsional resilient mechanism comprising at least two or more coaxial helical springs connected in series with the inner-most spring connected to the first member and the outer-most spring connected to the second member; and (c) one or more stops for preventing at least one of said springs from winding or unwinding beyond a particular point.

Abstract: The present invention is a spring motor providing an efficient storage of mechanical energy, translating the potential energy of wound springs to mechanical rotation. The invention includes a frame supporting two gears having peripheral teeth. A first coil spring is positioned about a first shaft and is attached to the first gear and the frame. Similarly, a second coil spring is positioned about a second shaft and is attached to the second gear and the frame. The peripheral teeth of the two gears engage with each other so that rotation of the first gear causes rotation of the second gear. The first and second coil springs are opposingly wound so that potential energy stored in the first coil spring is mechanically transferred, in an oscillating manner, to the second coil spring through rotation of the gears. A chain is attached to the peripheral teeth of the gears so that the chain is linearly displaced as the gears oscillate.

Abstract: A spring motor having a large number of flat spiral wound springs connected in series is shown which allows storage of large amounts of energy in a small amount of cubic space. Only a small force is required for full wind up of the assembly. Energy can be simultaneously stored and withdrawn.

Abstract: The device comprises a first pinion to be coupled to the motor shaft of the engine, and a pair of racks engaging opposite sides of the first pinion. A pair of springs, each engage one of the two racks for moving the racks to start the motor. The direction of thrust of the first of the springs against its rack is opposite to the direction of thrust of the second of the springs against its rack. The second pinion engages the two racks and is rotated by a manual start-up device to load the springs so that, when released, the springs can move the racks to start the motor.

Abstract: A stored-energy switch operating mechanism is provided that includes a charging arrangement that reduces the peak forces required during the charging of the operating mechanism to store operating energy. The charging arrangement is responsive to a unidirectional input to accomplish the charging of the operating mechanism. In an illustrative arrangement, the operating mechanism includes a closing spring and an opening spring. During charging, the springs are sequentially charged prior to any switch-closing or switch-opening operation. The operating mechanism does not require the detachment of any components during either charging or switch operation. The charging arrangement, in an illustrative embodiment, is responsive to a unidirectional rotary input to a charging crank to sequentially drive a charging element in a first direction and then in a second, opposite direction. In the first direction, a first of the springs is charged and latched. In the second direction, the second spring is charged and latched.

Abstract: A rubber band powered motor for a model airplane is provided having dual parallel drive shafts from which perpendicularly extend through the wing portions of the plane rubber band motor units, which comprise tape rollers, non-elastic tapes, guide rollers and rubber bands. The drive shafts extend through and are fixed to the tape rollers, upon which is wound the non-elastic tapes. The rubber bands are guided around the guide rollers and are connected to the tapes at one end and to the airframe at the other. Gear means are wound to rotate the shafts to wind the tapes so as to stretch the rubber bands. In operation, the bands relax and pull the tapes to turn the shafts and, via an intermediate gear drive train, the propeller. The tapes and gears absorb the sudden burst of rubber band energy and provide for an extended and stable flight.

Abstract: A releasable energy storing attachment to be used in conjunction with a ratchet wrench which is to operate a nut of a conventional nut and bolt assembly. The stored energy is to effect either tightening or loosening of the nut, whichever is desired. The attachment is designed primarily for use within confined quarter situations.

Abstract: An apparatus for equalizing fluctuating torque and storing rotational energy received through a rotating input shaft. The input shaft is connected to a pair of circular drive plates rotatably mounted at opposite ends of an output drum. A plurality of drive shafts equally spaced from each other and the axis of the drum are rotatably mounted between circular end plates of the output drum. A pinion gear fixedly secured to one end of each drive shaft sequentially meshes with an arcuate rack carried by each of the drive plates. The lengths of the arcuate racks are sufficiently short so that the rack meshes with no more than two pinion gears at a time. As each of the drive shafts sequentially rotate, they wind a respective torsion spring which, in turn, rotates a second pinion gear. The second pinion gear meshes with a ring gear extending along the inside surface of the output drum. Ratchet mechanisms prevent unwinding of the torsion springs when the first pinion gears are not meshing with the racks.

Abstract: A spring actuated differential mechanism for controlling the angular position of one or more vanes which is particularly suitable for use in a guidance system for a guided weapon. A pair of vanes are mounted on an axle and a bevel differential is mounted centrally between them. The pivots of one set of bevels is normal to and solid with the vane axle and meshing therewith is a second set of bevels coaxial with but free on the vane axle. Each bevel of the second set of bevels is connected to one of a pair of large pinion gears which are induced to turn in opposite directions by an associated coil spring. Each of these pinion meshes with a small pinion, rotation of which is governed by a low power solenoid controlled escapement. Momentary energization of one solenoid permits a desired rotation of the associated escapement and a correspondingly smaller rotation of the associated large pinion and bevel.

Abstract: A device is provided for changing the force acting on a spring operated reversibly rotatable shaft. The spring is arranged to be tensioned during the rotation of the shaft in one direction and then provides the rotation of the shaft in the opposite direction. The device comprises a rotatably mounted means which is arranged to be actuated by a second spring, and a gear reduction device which is inserted between the shaft and the rotatable means. The gear reduction device causes the rotatable means to rotate less than one revolution during the whole rotation of the shaft in one direction. The second spring is arranged to provide an additional force on the shaft over the gear reduction device.