Abstract: A mechanical advantage device includes a base, a beam pivotably connected to the base at a fulcrum between a first end of the beam and a second end of the beam, a seat at the first end of the beam, and a load at the second end of the beam. In some embodiments, the mechanical advantage device includes structure, such as a linkage, for effecting oscillation of the beam by shifting weight along the beam. The mechanical advantage device may be a single-person seesaw. In some embodiments, the mechanical advantage device may be used to move a car or to generate power.

Abstract: A workout apparatus for use by a user to simulate core movement patterns of bike riding is provided. The workout apparatus includes a base deck, a pair of tubular members coupled to the base deck and in contact with the ground, each tubular member having a convex surface in contact with the ground surface, a frame assembly pivotably mounted to the base deck, a handle bar coupled to the frame assembly, and a pair of hydraulic damper units coupled to the frame assembly and base deck. The user on the base deck grabs the handle bar to perform a pushing or pulling motion, thereby enabling the first hydraulic damper unit or second hydraulic damper unit to provide resistance to movement of the frame assembly.

Abstract: A workout apparatus for use by a user to simulate core movement patterns of bike riding is provided. The workout apparatus includes a base deck disposed on a ground surface, a frame assembly pivotably mounted to the base deck and comprising a front portion and a rear portion, a handle bar coupled to the front portion of the frame assembly, and a pair of hydraulic damper units coupled to the frame assembly and base deck, the first hydraulic damper unit coupled to the base deck and front portion of the frame assembly, the second hydraulic damper unit coupled to the base deck and rear portion of the frame assembly. The user on the base deck grabs the handle bar to perform a pushing or pulling motion, thereby enabling the first hydraulic damper unit or second hydraulic damper unit to provide resistance to movement of the frame assembly.

Abstract: A combined seat with compression device for interactively actuating a sound effects unit incorporated into a ride on toy vehicle as a user bounces up and down on the combined seat with compression device. The toy includes a frame for a ride-on toy vehicle, a sound effects unit having a housing secured to the frame, a seat secured to the frame and movable between first and second positions, an actuating mechanism attached at the seat for engagement with the sound effects unit, and a deformable compression device positioned at the seat capable of depressing as the seat is moved from the first the position to the second position to interactively activate the sound effects unit.

Abstract: A safer, more user-friendly spring-balance single-rider teeter-totter includes manual adjustments for both the vertical position of the spring, which adjusts the rest height of the seat, and the horizontal position of the spring from the pivot, which adjusts the counterbalance resistance. A safety cover may be provided for the spring or other counterbalance mechanism.

Abstract: A single rider teeter-totter has a support frame and a longitudinal beam member pivotally coupled to the support frame. A seat for a user is attached to a first end of the beam member. A counterbalancing resistance is provided by a plurality of elastic members, each of which is attached at a first end to the support frame. A number of the elastic members appropriate to the weight of the user are secured to a securing station disposed on the beam member. The unused elastic members may be secured to a second securing station attached to the support frame.

Abstract: A single rider teeter-totter has a support frame and a longitudinal beam member pivotally coupled to the support frame. A seat for a user is attached to a first end of the beam member. A counterbalancing resistance is provided by a plurality of elastic members, each of which is attached at a first end to the support frame. A number of the elastic members appropriate to the weight of the user are secured to a securing station disposed on the beam member. The unused elastic members may be secured to a second securing station attached to the support frame.

Abstract: A safer, more user-friendly spring-balance single-rider teeter-totter includes manual adjustments for both the vertical position of the spring, which adjusts the rest height of the seat, and the horizontal position of the spring from the pivot, which adjusts the counterbalance resistance. A safety cover may be provided for the spring or other counterbalance mechanism.

Abstract: A safer, more user-friendly spring-balance single-rider teeter-totter includes manual adjustments for both the vertical position of the spring, which adjusts the rest height of the seat, and the horizontal position of the spring from the pivot, which adjusts the counterbalance resistance. A safety cover may be provided for the spring or other counterbalance mechanism.

Abstract: A safer, more user-friendly spring-balance single-rider teeter-totter includes manual adjustments for both the vertical position of the spring, which adjusts the rest height of the seat, and the horizontal position of the spring from the pivot, which adjusts the counterbalance resistance. A safety cover may be provided for the spring or other counterbalance mechanism.

Abstract: A solo-operable seesaw includes a base member having oppositely spaced side sections for engaging a ground surface and further includes a plurality of elongated braces having opposed end portions connected thereto. The seesaw further includes an elongated plank having a first end portion engaged with the base member and selectively pivotable thereabout. The plank further has an oppositely spaced second end portion defining a seat and includes a plurality of elongated handlebars extending outwardly from the plank. The seesaw further includes a mechanism for pivotally lifting the plank upwardly along a predetermined arcuate path after the second end portion of the plank is moved to select lowered positions. The lifting mechanism includes a spring-loaded hydraulic air piston having opposed end portions and a plurality of brackets connected thereto. The lifting mechanism-further includes an elongated swivel pin transversely passing through the plank for connecting same to the base member.

Abstract: An amusement apparatus that includes a base, an arm, a seat biasing device and a arm biasing device. The base is configured for placement on to a generally horizontal surface. The arm has a distal end and a proximal end. The proximal end of the arm is rotatably and pivotally coupled to the base. The distal end of the arm includes a seat. The seat biasing device is coupled to the seat and configured to repeatedly and resiliently contact the surface. The arm biasing device is coupled to a pivot member and the proximal end of the arm. The arm biasing device is configured to upwardly bias the seat of the arm.

Abstract: An amusement apparatus includes a base, an arm and a seat biasing device. The base is configured for placement on to a generally horizontal surface. The arm has a distal end and a proximal end. The proximal end of the arm is rotatably and pivotally coupled to the base. The distal end of the arm includes a seat. The seat biasing device is coupled to the seat and configured to repeatedly and resiliently contact the surface. An adjustable biasing member is coupled to the base and the proximal end of the arm. The biasing member is configured to upwardly bias the seat of the arm. A resilient ball is coupled to the seat.

Abstract: A hobby horse device wherein the diagonal movement and the vertical movement produced in the back of a horse as he trots and canters is simulated so that a rider can exercise and practice performing riding skills. The hobby horse includes a plurality of seat supports with handles. Straps are attached to the base of the seat supports which encompass a support dowel which lies adjacent to the seat supports. The support dowel is attached on both sides to a basic frame by a plurality of springs. The basic frame contains a form representing the horses girth and stirrups for the rider's feet. The extension of the springs and their subsequent return to their original shape provide the vertical movement as the rider presses down and rises with his/her seat. The diagonal movement is produced beneath the rider's seat when the rider raises and lowers each seat support independently of the other.

Abstract: A new Solo Seesaw Device for allowing a single child the fun of riding a seesaw. The inventive device includes the inventive device includes a seesaw body adapted to be supported at a point between a seat lever arm and a counterweight lever arm both included on the seesaw body. A counterweight assembly is included on the counterweight lever arm providing counterweight to an individual using the Solo Seesaw Device. The Solo Seesaw Device is pivotably and rotatably mounted to a base providing an upstanding vertical support by means of a pivot arrangement.

Abstract: A playground apparatus is provided which consists of a base having a central ring bearing mounted onto the ground. A stanchion extends upwardly form the central ring bearing in the base, so as to rotate thereabout. An elongate balance beam is pivotally mounted near the top of the stanchion for movement up and down. A seat assembly is located at a first end of the balance beam to receive a person. A structure is located at a second end of the balance beam, for counterbalancing the weight of the person in the seat assembly. This permits the person to rotate the stanchion through a complete revolution in a clockwise and counterclockwise direction and to move the balance beam up and down.

Abstract: An omni-directional rocking apparatus includes a rocking base assembly and seating assembly. The rocking base assembly comprises at least two arched transverse members with distally disposed contoured stops adapted to limit the range of rocking motion in any direction. In one preferred embodiment, the rocking apparatus is constructed as a tip-resistant, omni-directional riding toy wherein the seating assembly comprises a simulated animal body, vehicle or other conveyance device.

Abstract: A bidirectional, synchronous, total body exercise machine. The machine includes bidirectional force-resistance mechanism in the form of a cylinder with a piston and piston rod. A lever is mounted to a framework which includes a vertical support member and a horizontal support member. The piston rod is attached to one end of the lever and the cylinder is attached to the vertical support member of the frame. Foot pedals are attached to one end of the lever and a seat is mounted on the other end of the lever so that a user may be seated on the lever. A stationary handle bar is also provided on the vertical support member so that the user, when seated on the lever, can grasp the stationary handle and then can pull forward with the arms and pushing down on the foot pedals, while at the same time rocking the torso forward, pulling the piston rod downwardly. The piston in then returned by straightening the arms and relaxing the force on the foot pedals, while rocking the torso back.