Abstract: A seal for a rotary machine may include an end cap configured to be coupled to the rotary machine. The end cap may define an end face and a bore. The seal may also include a sleeve received through the bore of the end cap and configured to receive a shaft associated with the rotary machine. The seal may also include a collar coupled to the sleeve and configured to couple the sleeve to the shaft associated with the rotary machine. The seal may further include a spacer coupled to the end face of the end cap, in a first position, such that at least a portion the spacer is between the collar and the end face of the end cap, and, in a second position, such that the portion of the spacer is not between the collar and the end face of the end cap.

Abstract: A gear reduction assembly may include a main input shaft, a carrier coupled to the main input shaft, and at least one carrier shaft coupled to the carrier and spaced from the main input shaft. The gear reduction assembly may also include at least one spur gear pair including a first spur gear coupled to the carrier shaft, and a second spur gear, wherein the first and second spur gears are coupled to one another such that they rotate together. The gear reduction assembly also includes a first internal gear engaged with the first spur gear, a second internal gear engaged with the second spur gear, and a hub associated with the first internal gear. The first internal gear has a first number of teeth, the second internal gear has a second number of teeth, and the first and second numbers of teeth differ by from one to five teeth.

Abstract: An internal combustion engine includes a cylinder block defining a cylinder and a crankshaft rotatably received by the cylinder block. The crankshaft includes a crankshaft gear and is configured to rotate along a longitudinal axis of the crankshaft. The engine further includes a piston configured to reciprocate within the cylinder between spaced stroke termination points defining a stroke of the piston. The engine also includes a connecting rod operably coupled to the piston. The connecting rod includes a gear configured to engage the crankshaft gear, wherein the crankshaft gear and the gear of the connecting rod are configured to engage one another, such that as the piston travels within the cylinder, the connecting rod rotates the crankshaft via engagement between the crankshaft gear and the gear of the connecting rod.

Abstract: An internal combustion engine may include a bushing defining an external circumferential diameter and an aperture defining an internal circumferential diameter. A center defined by the external circumferential diameter and a center defined by the internal circumferential diameter are offset with respect to one another. The internal circumferential diameter is operably coupled to a crankpin, and the external circumferential diameter is operably coupled to a connecting rod, thereby operably coupling the connecting rod to the crankpin. The engine may further include a bushing control assembly, wherein the bushing control assembly is configured to delay initiation of a power stroke of the engine until a crankshaft of the engine has rotated at least about 15 degrees beyond a first stroke termination angle of a compression stroke of the engine.

Abstract: A machine has a platform for a standing patient to perform foot exercises specified by a set of selectors on the machine and pre-selected according to a therapy program. Different types of monitor devices viewable by the patient and an attendant, direct the patient to proceed with selected exercises. Light sources associated with the platform to illuminate portions of it, and other slight sources directed to sensors above the platform, are activated in concert, according to the directions addressed to the patient.

Abstract: An adjustable rebound device may include a support platform and a warping assembly to adjust a rebound resistance of the support platform. The warping assembly may include a plurality of mounting assemblies coupled to the support platform and a rebound adjustment assembly coupled to at least one of the mounting assemblies. The rebound adjustment assembly may be configured to actuate a mounting assembly such that the support platform is warped and a rebound resistance is adjusted. A method for adjusting a rebound resistance of a platform assembly is also described. An exercise machine may include a machine base assembly, a support platform, and a warping assembly. The warping assembly may include a plurality of mounting assemblies and a rebound adjustment assembly, such that the rebound adjustment assembly is configured to actuate a mounting assembly such that the support platform is warped and a rebound resistance is adjusted.

Abstract: A gear reduction assembly may include a main input shaft, a carrier coupled to the main input shaft, and at least one carrier shaft coupled to the carrier and spaced from the main input shaft. The gear reduction assembly may also include at least one spur gear pair including a first spur gear coupled to the carrier shaft, and a second spur gear, wherein the first and second spur gears are coupled to one another such that they rotate together. The gear reduction assembly also includes a first internal gear engaged with the first spur gear, a second internal gear engaged with the second spur gear, and a hub associated with the first internal gear. The first internal gear has a first number of teeth, the second internal gear has a second number of teeth, and the first and second numbers of teeth differ by from one to five teeth.

Abstract: A gear reduction assembly may include a main input shaft, a carrier coupled to the main input shaft, and at least one carrier shaft coupled to the carrier and spaced from the main input shaft. The gear reduction assembly may also include at least one spur gear pair including a first spur gear coupled to the carrier shaft, and a second spur gear, wherein the first and second spur gears are coupled to one another such that they rotate together. The gear reduction assembly also includes a first internal gear engaged with the first spur gear, a second internal gear engaged with the second spur gear, and a hub associated with the first internal gear. The first internal gear has a first number of teeth, the second internal gear has a second number of teeth, and the first and second numbers of teeth differ by from one to five teeth.

Abstract: A crankshaft may include first and second journals having circular cross-sections, and a crankpin, the crankpin extending between first and second crankpin journals. The crankpin may include first, second, and third cams including respective first, second, and third cam profiles, wherein the first, second, and third cam profiles differ from one another. At least one of the first, second, and third cam profiles may be configured to affect the stroke of a connecting rod coupled to the crankpin. A connecting rod may include first, second, and third followers including respective first, second, and third follower surfaces, wherein the first and second follower surfaces differ from one another. An internal combustion engine may include a crankshaft and a connecting rod configured to provide relative linear movement between a crankpin axis and a proximal end of the connecting rod.

Abstract: A connecting rod for an engine may include a sleeve portion having a distal end including a distal aperture configured to be coupled to a piston, and a rod portion having a proximal end including a proximal aperture configured to be coupled to a crankshaft. The rod portion may be configured to reciprocate in the sleeve portion, such that a distance between a center of the proximal aperture and a center of the distal aperture is variable. An engine may include the connecting rod, a power train may include the engine, and a vehicle may include the power train.

Abstract: A tool powered by pressurized liquid, typically water, for treatment of a variety of surfaces ranging from natural to manufactured, has a scrubber wheel powered by the pressurized liquid. A treatment liquid is contained in a single-use, throw-away cartridge mounted in the tool. The cartridge is mounted in the tool for rotation therein when desired. A nozzle in the tool for discharging the pressurized liquid onto the scrubber wheel to rotate the scrubber wheel, is movable by the tool operator during a treatment operation to change the direction of discharge to the extent desired to drive the scrubber forward or backward and to rotate the cartridge to dispense the treatment liquid if, and when, dispensing of the treatment liquid is desired.

Abstract: A crankshaft may include first and second journals having circular cross-sections, and a crankpin, the crankpin extending between first and second crankpin journals. The crankpin may include first, second, and third cams including respective first, second, and third cam profiles, wherein the first, second, and third cam profiles differ from one another. At least one of the first, second, and third cam profiles may be configured to affect the stroke of a connecting rod coupled to the crankpin. A connecting rod may include first, second, and third followers including respective first, second, and third follower surfaces, wherein the first and second follower surfaces differ from one another. An internal combustion engine may include a crankshaft and a connecting rod configured to provide relative linear movement between a crankpin axis and a proximal end of the connecting rod.