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.

Description:
BACKGROUND OF THE INVENTION 
     The present invention relates to a spring driven apparatus which can be used to drive golf carts, connect to generators for homes, and other similar applications. The spring driven apparatus operates, using a series of springs to store power. 
     To create a comparison, consider the operation of a grandfather clock. It must be wound up to make it work. As the pendulum swings from side to side, it unwinds the clock, and eventually the clock slows or stops entirely and must be rewound. 
     The spring apparatus uses springs, on the same principle as a grandfather clock. The springs must be wound and preset after the initial assembly. The springs will unwind, but never all the way; never more than 30 degrees. A multiple of springs are set horizontally and arranged in a circle. There is a simple double ratchet system at one end of the apparatus connected to the springs. The double ratchet system rewinds the 30 degrees back into the springs. As the springs are unwinding, the force from all the springs will reset one spring at a time, in one revolution. The reset is what forces energy out the opposite end of the spring. This is where the flywheel is located. The amount of horsepower generated by the apparatus is determined by the amount of torque wound into the spring at assembly. A spring is the most efficient means of storing energy that is to be converted into usable horsepower. 
     Energy is stored in the springs and power is generated by way of the various forces which cause the springs to wind and unwind. 
     One known prior art, is an ELASTIC ENERGY STORING DEVICE, U.S. Pat. No. 4,762,202, issued on Aug. 9, 1988 and invented by Masahiro Ogawa, which comprises a first drum, a second drum, at least one intermediate drum, an elastic cord wound from the first drum to the second drum, and means for mechanically connecting the drums. 
     Another known prior art is SPRING MECHANISMS, U.S. Pat. No. 4,591,136, issued on May 27, 1986 and invented by George H. Leonard, which is useful as a counterbalance or as a spring suspension. 
     Another known prior art is a SPRING-OPERATED REVERSABLY ROTATABLE BODY, U.S. Pat. No. 4,290,564, issued on Sep. 22, 1981 and invented by Hans I. R. Karlsson. 
     Another known prior art is a SPRING DRIVE MECHANISM, PARTICULARLY FOR MOBILE TOYS, U. S. Pat. No. 4,053,029, issued on Oct. 11, 1977 and invented by Helmut Darda, which comprises an axle which is a portion of a spring wire which is retained in spring drive mechanism plates. 
     None of the prior art discloses a spring driven apparatus which, in essence, feeds upon itself to continue to operate and store useable power as is the case with the present invention. 
     SUMMARY OF THE INVENTION 
     This invention relates to a spring driven apparatus which comprises a base having a pair of shaft support members extending upward therefrom, a plurality of power shafts each of which are split and having ends journaled through the shaft support members and each power shaft having a sprocket mounted about near one end thereof with a separate rewind lock engaging each sprocket, a plurality of torsion springs each mounted about a respective one of the power shafts, a drive shaft also journaled through the shaft support members and having a rewind flywheel and a drive flywheel, one mounted at each end thereof, the rewind flywheel being connected to a cam which actuates a plurality of ratchet members which rewind the torsion springs to re-energize the torsion springs, and a power transfer means including a plurality of power gears connected to the power shafts and drive shaft and carrying chains to power the drive shaft and the flywheels. The torsion springs are initially energized by a user rotating the power shafts which wind the torsion springs to a desired tension with the ratchet members. Upon release, the torsion springs release some of their energy, but not all, to the power shafts which transfer energy and power to the power transfer means which transfer power and energy to the drive shaft which, in turn, not only drives the drive flywheel but also returns energy back to the rewind flywheel which actuates the cam which, in turn, actuates the ratchet members and rewinds the torsion springs, individually, and in spaced intervals and between pauses to restore energy to the torsion springs. The amount of energy restored to the torsion springs is energy released by the torsion springs, which allows this spring driven apparatus to operate. 
     One objective of the present invention is to provide a spring driven apparatus which can reset itself by a wind and unwind method. 
     Another, objective of the present invention is to provide a spring driven apparatus which does not emit any harmful fumes or exhausts into the environment unlike that of fuel burning machines. 
     Also, another objective of the present invention is to provide a spring driven apparatus which generates horsepower capable of driving golf carts and generators and other devices and apparatuses. 
     Further objectives and advantages of the present invention will become apparent as the description proceeds and when taken in conjunction with the accompanying drawings wherein: 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view of the spring driven apparatus. 
     FIG. 2 is a detailed side view of the rewind means including the ratchet means and the cam of the spring driven apparatus. 
     FIG. 3 is a top plan view of the spring driven apparatus. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Referring to the drawings in FIGS. 1-3, the spring driven apparatus  10  comprises a base  15  having shaft support members  15 A-E extending upward from near the ends of the base  15 , the shaft support members  15 A-E being essentially elongated brackets having ends welded to cross members  18 ,  19  which are welded to longitudinal members  20 ,  21  forming the bottom of the base  15 . The spring driven apparatus  10  further comprises a plurality of power shafts  22 - 25  each being split near the middle of the respective shaft with one split portion  22   a ,  24   a  of the power shafts  22 - 25  being journaled to one of the shaft support members  15   b  and the other split portion  22   b ,  25   b  being journaled to an opposed shaft support member  15   c , the split portions of each power shaft being coupled together with a coupler member  22   c ,  24   c  and all the power shafts  22 - 25  being disposed parallel to one another. Each of the coupler member  22   c ,  24   c  comprises a sleeve  22   c ′,  24   c ′ and at least one bearing and bushing engaging the respective power shaft  22 - 25 . 
     Each power shaft  22 - 25  supports a separate torsion spring  30 - 33  with each torsion spring  30 - 33  having one end securely engaged to a first spring stop  30   a ,  32   a  which is fixedly attached with fasteners to one split portion  22   a ,  24   a  of the respective power shaft  22 - 25  and further having an opposite end securely engaged to a second stop member  30   b - 33   b  which is fixedly attached with fasteners to the other split portion  22   b ,  24   b  of the respective power shaft  22 - 25 . Each power shaft  22 - 25  further has a separate sprocket  22   d - 25   d  which is fixedly attached to one of the split portions  22   a ,  24   a  of the respective power shaft  22 - 25  and which has teeth which are engageable to a rewind lock  34 - 37  which is mounted in cooperation with the respective sprocket  22   d - 25   d  and which is mounted to a bracket  34   a - 37   a  fixedly attached to the base  15  and which prevents the respective torsion spring  30 - 33  which is reset or rewound from unwinding by engaging the teeth of the sprocket  22   d - 25   d  and preventing the sprocket  22   d - 25   d  from rotating in the direction of the force effected upon it by the torsion spring  30 - 33  which is being wound up. 
     When the torsion springs  30 - 33  are released, only so much of each torsion spring  30 - 33  is expended at any one time. Energy from the torsion springs  30 - 33  are transferred to their respective power shafts  22 - 25 , in particular, to the split portions  22   b ,  24   b  of the respective power shafts opposite the split portions  22   a ,  24   a  with the sprockets  22   d - 25   d . The energy from the torsion springs  30 - 33  effects rotation of the power shafts  22 - 25  and is transferred to a power transfer means which comprises a plurality of power gears  40 ,  42  equal to the number of power shafts  22 - 25  with one power gear to a power shaft. The power gears  40 ,  42  are mounted to the ends of the split portions  22   b ,  24   b  of the power shafts  22 - 25  without the sprockets  22   d - 25   d  and carry a member  45  such as a belt or chain which interconnects the power gears  40 ,  42  to a drive gear  50  mounted upon near the end of a drive shaft  51  which is journaled through the shaft support members  15   b ,  15   c  and which further has a drive flywheel  52  attached to one end thereof, the drive flywheel  52 , being disposed generally parallel to the power shafts  22 - 25 . The drive shaft  51  is actuated by the power gears  40 ,  42  of the power shafts and transfers energy not only to the drive flywheel  52  which supplies power to a rewind means which reset the torsion springs  30 - 33  and which comprises a rewind flywheel  55  mounted to the end of the drive shaft  51  opposite to the drive flywheel  52 , a cam  56  attached to the rewind flywheel  55 , and a plurality of ratchet members  60 - 63  equal to the number of power shafts  22 - 25  with one ratchet member to a power shaft, the ratchet members  60 - 63  being attached to the ends the power shafts  22 - 25  opposite to the power gears  40 ,  42 . Each of the ratchet members  60 - 63  has a lever  60   a - 63   a  which is contactable with the cam  56  on the rewind flywheel  55 . 
     As the rewind flywheel  55  is rotated, the cam  56  has an eccentric portion which rotates therewith and moves the levers  60   a - 63   a  on the ratchet members  60 - 63  which turns the power shafts  22 - 25  to rewind and reset the torsion springs  30 - 33 . The cam  56 , in essence, cranks the ratchet members  60 - 63  as the cam  56  rotates eccentrically with the rewind flywheel  55 . One of the ratchet members  60 - 63  at any one time is being cranked and moved by the cam  56 , which in turn, cranks the respective power shaft  22 - 25  which rewinds the respective torsion spring  30 - 33 . All the power shafts  22 - 25  have longitudinal axes which are generally equally spaced about the axis of the cam  56  such that during each revolution of the cam  56 , the ratchet members  60 - 63  are actuated by the cam  56  and rotate the power shafts  22 - 25  and the torsion springs  30 - 33  from about 10 to 15 degrees each time. 
     Initially, all the torsion springs  30 - 33  are wound preferably from 3 to 6 turns about their respective power shafts  22 - 25  and are locked by the rewind locks  34 - 37  so that they do not uncontrollably unwind. When the torsion springs  30 - 33  are allowed to partially unwind and as the torsion springs  30 - 33  partially unwind, energy is transferred to the split portions  22   b ,  24   b  of the power shafts  22 - 25  connected to the power gears  40 - 43  which actuate the drive gear  50  which actuates the drive shaft  51  and drive flywheel  52  and the rewind flywheel  55  which turns the cam  56 . Each torsion spring  30 - 33  generates approximately 200 foot pounds of torque. 
     During the unwinding and rewinding of the torsion springs  30 - 33 , an equilibrium is reached where the energy being released by some of the torsion springs  30 - 33  is close to the energy being restored back into the other torsion springs  30 - 33 . In order to avoid a total lock up of the torsion spring driven apparatus, the rewind flywheel  55  incidentally and timely pauses in its revolution to overcome this equilibrium so that the energy being released by some of the torsion springs  30 - 33  overcomes the energy being restored in the other torsion springs  30 - 33 . During each revolution of the rewind flywheel  55 , each torsion spring  30 - 33  is rewound and receives restored energy by the torsion spring  30 - 33 . This spring driven apparatus  10  can operate with each torsion spring  30 - 33  being reset during each revolution of the rewind flywheel  55  which not only drives the cam  56  which cranks the ratchet members  60 - 63  which resets the torsion springs  30 - 33  but which also effects the momentum upon the drive shaft  51  to deep the drive shaft  51  rotating even during the incidental and timely pauses. 
     Various changes and departures may be made to the invention without departing from the spirit and scope thereof Accordingly, it is not intended that the invention be limited to that specifically described in the specification or as illustrated in the drawings but only as set forth in the claims.