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US 5,494,280 AGranted
Concave end cap with cone load for bats
OwnerJack W. MacKay, Jr.inventor
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OwnerJack W. MacKay, Jr.inventor
Estimating the term…
An end cap for a hollow aluminum bat having a barrel with a substantially constant external diameter area defining a hitting zone. The end cap is constructed of rigid plastic material and includes a reduced diameter inner end which telescopes into the end of the bat. The barrel includes a peripheral groove in the internal surface adjacent the end of the bat and the reduced end of the cap includes a peripheral ridge received in the groove to anchor the end cap to the barrel. The distal end of the end cap is constructed with a concave end surface which moves the weight of the end cap axially inwardly in relation to the end of the aluminum bat. The end cap may include a conically shaped solid weight area extending axially inwardly from the inner surface of the end cap to increase the load at the end of the bat and also move the increased load inwardly in relation to the end of the bat.
An aluminum bat comprising a handle portion and a tubular barrel having a substantially constant external diameter area defining a hitting zone extending to an end remote from the handle portion and an end cap having a short peripheral portion with an external diameter equal to the external diameter of the barrel, said end cap including a reduced diameter inner end portion telescoped into the end of the barrel for mounting the end cap on the barrel, said tubular barrel including a peripheral groove in the internal surface thereof adjacent said end of the bat remote from said handle portion, said reduced diameter inner end portion of the end cap including a peripheral ridge projecting into said groove for anchoring the end cap to the barrel, said end cap including an end wall with a concave recess extending inwardly from an axial outer surface of the end wall thereby moving the weight center of the end cap axially inwardly in relation to the end of the barrel closer to the handle portion of the bat and closer to the optimum area of the barrel hitting zone to be impacted with a ball.
An end cap for the tubular barrel of a hollow bat, said end cap comprising an end wall adapted to form a closure for the end of the barrel, a short peripheral portion on said end wall having an external diameter adapted to engage the end of the barrel and form a continuation of the barrel, said end cap including an axially extending reduced diameter portion adapted for telescopic insertion into the end of the barrel, said end cap forming a weight balanced about a longitudinal axis of the end cap, said longitudinal axis of the end cap adapted to be oriented coincidental to a longitudinal axis of the bat, said end wall including a concave recess in an outer surface thereof thereby moving the weight center axially inwardly in relation to the end cap.
Dependencies are inferred from the claim text.