Flywheel and crank apparatus
OwnerRobert R. Petersinventor
Life of this patent
Estimating the term…
Abstract
A split flywheel and crank pin apparatus having a pair of flywheels held in a preselected spaced relationship to rotate about a common axis by a pin spaced from the axis. The pin has a central section and opposed ends. Each end has an undulating surface with a continuously varying radius for a circumferential path along the surface and a constant radius along a path on the surface parallel to a main axis of the pin. The pin ends are snugly received in bores in respective flywheels that have internal surfaces that mirror the pin end surfaces. The pin ends are separated from the pin central section by shoulders that abut facing surfaces of the flywheels. The pin is held in each flywheel by a nut. The pin includes lubricating passageways for lubricating a journal surface of the pin central section.
Claims12
A rotatable apparatus for transferring energy comprising:
- a) a pair of spaced plates having axes of rotation that are coaxially aligned;
- each of said plates having a bore passing therethrough;
- each of said bores being spaced from and extending parallel to the axis of rotation associated with a respective one of said plates;
- b) a pin having opposed ends received in said bores and an elongate axis;
- and wherein:
- c) each of said bores having an undulating and sinusoidal like female surface formed of a continuous curve having peaks and valleys with each of said peaks and valleys formed of a continuous curved arc with each of the arcs being approximately equal in radius throughout and being aligned such that the female surface continuously varies in distance from said pin axis along a circumferential path on the female surface, but is generally constant in distance from said pin axis along a path parallel to said pin axis;
- each of said pin ends having a male surface that mirrors a respective one of said bore female surfaces and mates snugly with said bore female surface.
A flywheel and crank apparatus for use in a motorcycle engine comprising:
- a) a pair of spaced and weighted flywheels;
- each of said flywheels being attached to and having an axis of rotation about a supporting shaft;
- each of said flywheels having a bore with a center and being spaced from a respective one of said supporting shafts and extending therethrough;
- each of said bores having an internal female surface that is continuously curved having a sinusoidal like curvature that has peaks and valleys with each of said peaks and valleys being formed of a continuous arc with each of the arcs being approximately equal in radius throughout the length of each peak and valley and having a continuously varying distance from said bore center along a circumferential path on said female surface, but that is generally constant in distance from said bore center along a path on said surface that is parallel to the axis of rotation of an associated said flywheel;
- b) a crank pin having a central cylindrical section with a cylindrical surface thereon, a pair of stub sections located on either side of said cylindrical section and being coaxial therewith and a pair of threaded end sections each being coaxial with said cylindrical section and positioned on opposite sides of said cylindrical section adjacent a respective one of said stub sections;
- each of said stub sections having thereon a male surface sized and shaped to snugly be received in abutting relationship to a respective said bore female surface;
- and
- c) a pair of threaded nuts;
- each of said nuts being received on a respective said pin threaded end section so as to secure said pin stub section in a respective said flywheel bore.
Dependencies are inferred from the claim text.