摘要:
A multi-piece ball bat includes a first section including a hitting portion, and a second section including a handle portion. A flexible joint connects the first section to the second section. The flexible joint may be a structural joint, such as a spring member, a mechanical locking joint, or a pneumatic or hydraulic joint, or it may be a non-uniform and/or non-continuous elastomeric joint.
摘要:
A thin wall tubular bat, particularly for softball, has a constant barrel diameter and an internal tubular insert spaced from the barrel with a shear stress transmitting elastomeric layer sandwiched between the barrel and insert so that the insert reinforces the barrel to reduce denting which would otherwise occur as the elastomer efficiently transfers stress to the insert and stores and releases energy during impact of the bat with a ball.
摘要:
A governed performance hard shell bat designed to ensure ball exit speed approximating and not exceeding that of a wood bat of comparable weight and geometry is comprised of a thin wall hard shell such as reinforced resin composite or of metal such as aluminum or titanium or alloys thereof filled with light weight semi-rigid material such as a syntactic foam in the hitting area, the bat having longitudinal flexibility approximating that of a similarly shaped wood bat. The filler material has a sectional density and hardness correlated with the thickness of the metal shell wall in the hitting area and may be cast in the thin wall hard shell or it may be pre-formed and subsequently inserted into the shell. The filler has a sectional density in the range of from 10-30 lbs./cu. ft.
摘要:
A governed performance metal shell bat designed to ensure ball exit speed approximating and not exceeding that of a wood bat of comparable weight and geometry is comprised of a thin wall metal shell filled such as aluminum or titanium or alloys thereof with light weight semi-rigid material such as a syntactic foam in the hitting area, the bat having longitudinal flexibility approximating that of a similarly shaped wood bat and the filler material having a density and hardness correlated with the thickness of the metal shell wall in the hitting area.
摘要:
A governed performance aluminum shell bat designed to ensure ball exit speed approximating and not exceeding that of a wood bat of comparable weight and geometry is comprised of a thin wall aluminum shell filled with syntactic foam in the hitting area, the foam having a density and hardness correlated with the thickness of the bat wall in the hitting area.
摘要:
A shock attenuating hollow bat including a barrel having a proximal taper segment and a separate handle having a distal tapered segment providing an enlarged shape at the distal end of the handle, the tapered segment of the handle fitting within the proximal taper segment of the barrel, the relative sizes of the enlarged distal end of the handle and the interior of the barrel at its proximal end providing a mechanical interference preventing the barrel from sliding distally off the handle, the barrel and handle elements being joined by an elastomeric isolation union between the inner surface of the barrel taper segment and the outer surface of the handle taper segment to form an integral bat having reduced shock transmission to the hands of a batter in the event of an off-center hit.
摘要:
A hollow metal ball bat having a hollow end knob encompassing an enlarged section of a hollow handle portion. The opening of the end knob is smaller than the contained enlarged handle portion, and fits over the smaller cross-section of the handle portion adjacent the enlarged portion. A ring of resilient material is held between the end knob and the enlarged handle portion.
摘要:
A method of attaching a hollow end knob to the handle portion of a hollow ball bat, in which the hollow bat handle portion positioned within the cavity of the hollow end knob is outwardly deformed to a transverse cross-section substantially larger than the cavity opening. The outward deformation is preferably accomplished by applying pressure against the transverse exterior surface of the end knob which in turn bears against the circular end of the hollow bat handle. The interior transverse surface of the end knob may have a circular recess corresponding to the end of the bat handle.A hollow metal ball bat having a hollow end knob encompassing an enlarged section of a hollow handle portion. The opening of the end knob is smaller than the contained enlarged handle portion, and fits over the smaller cross-section of the handle portion adjacent the enlarged portion.
摘要:
A coated ice skate blade includes an ice skate blade having a plurality of sides and a bottom, and a compressive coating applied to the sides of the ice skate blade. Also provided is a method of producing a coated ice skate blade including receiving an ice skate blade having a plurality of sides and an unground bottom, applying a compressive coating to the sides and the bottom of the ice skate blade, and grinding the bottom of the ice skate blade to produce a radius of hollow. Another method includes receiving an ice skate blade having a plurality of sides and a ground bottom, and applying a compressive coating to the sides and the bottom of the ice skate blade.