Back to results
US 4,289,312 AGranted
Finger grip insert for a bowling ball
OwnerDonald L. Heimbignerinventor
Life of this patent
Estimating the term…
Abstract
A resilient insert for installation within a bowling ball bore for the purpose of cushioning the user's finger tip. One wall segment of the insert extends the length of the insert and is of a greater thickness than at least some of the remaining wall segments of the insert. The internal surface of the one wall segment is formed on a greater radius than the corresponding radii of certain remaining internal surfaces to more closely correspond to the transverse oval shape of the user's finger tip.
Claims2
A finger grip insert for bowling balls, said insert comprising,
- a tubular resilient body having an outer wall for recessed securement within a bowling ball bore, and
- wall segments of the tubular resilient body extending lengthwise of said body, a first pair of said wall segments each of uniform thickness and having a curved inner wall surface concentric with the adjacent outer wall of the insert, a second pair of wall segments each of a greater thickness than that of the first pair of wall segments and each having an inner wall of less transverse curvature than the inner surfaces of said first pair of wall segments whereby adequate cushioning of an inserted finger tip bearing on one of said second walls is effected without impeding finger tip insertion or removal from the insert.
Dependencies are inferred from the claim text.