Wilson Sporting Goods Co.

David A Vogel

Kevin L Krysiak

William D Severa

Robert T Thurman

Robert T Kapheim

Frank M Simonutti

William E Dillon

Ronald R Rocchi

Scott M Doyle

Chloe J Lee

Ravi Itiravivong

Eloisa M Compostizo

Hudson R Vantrease

Brad M Skoryi

Mark W Lin

Ninad Trifale

Brad M Skoryl

Michael W Schaeffer

Trevor Bird

Stephen Cadiz

Nadine Lippa

Central portion of a racquet

Padel paddle

A tennis ball including a spherical core. The spherical core including an outer surface and a raised wall integrally molded as part of the outer surface.

Tennis ball having a thermoplastic core

A method for forming a tennis ball including the steps of providing a non-foamed thermoplastic core and providing a non-smooth textured surface on the core. The thermoplastic core including a thermoplastic material having a specific gravity of 0.86 to 1.38, a flexural modulus of 2.0 to 50.0 MPa, and a Shore D hardness of 10 to 70. The thermoplastic material having a thickness between 3.0 and 8.0 mm. The thickness of the thermoplastic material being configured to maintain dimensional stability at internal pressures of between zero and 15 psi.

A tennis ball including a non-foamed thermoplastic core defining an internal volume. The core includes a thermoplastic material having a specific gravity of 0.86 to 1.38, a flexural modulus of 2.0 to 50.0 MPa, and a Shore D hardness of 10 to 70. A thickness of the thermoplastic material is between 3.0 and 8.0 mm. The thickness of the thermoplastic material is configured to maintain dimensional stability at internal pressures of between zero and 15 psi.

A tennis ball comprises a hollow elastic circumferential core defining a primary outer surface pattern, and a textile outer layer extending over and about the core.

Tennis ball having a core with aerodynamic patterns

A tennis ball may include a spherical hollow core having an inner surface including material shift lines and a textile outer layer over and about the core.

Tennis ball having a core with internal material shift lines

A sports racquet extends along an axis and is configured for use with a quantity of racquet string forming a string bed about a string plane. The racquet includes a frame formed of a thermoplastic material, and including first and second halves including first and second spaced apart hoop regions, and first and second handle regions, respectively. The hoop regions includes projections extending from hoop regions in a direction orthogonal to the string plane. At least one of the hoop regions defines a set of bores. The projections are configured to matably engage the bores. The projections extend through the string plane and define curved bearing surfaces configured for engaging and supporting the racquet string. The projections include first and second projections having first and second radii of curvature, respectively. The first radius of curvature being at least 0.5 mm greater than the second radius of curvature.

Optimized thermoplastic racquet

A sports racquet extending along a longitudinal axis and configured for supporting a quantity of racquet string generally about a string plane. The racquet includes a frame formed of a thermoplastic material and including a head portion and a handle portion. The head portion is formed of first and second hoop regions. At least one of the first and second hoop regions includes a first set of projections extending from one of the first and second hoop regions across the string plane and engaging the other of the first and second hoop regions. The first set of projections space apart the first and second hoop regions by a first predetermined dimension to define a plurality of through-hoop region openings. The handle portion is formed of first and second handle regions directly coupled together without defining either a plurality of handle openings.

A racquet extending along a longitudinal axis includes a frame formed of a thermoplastic material. The frame includes two halves having two spaced apart hoop regions, two handle regions and two mating surfaces. One of the halves includes a set of projections extending from one of the mating surfaces. At least one of the halves defines a set of bores. The projections are configured to engage the bores. At least two of the projections are stepped projections having a proximal section and a distal section. The transverse cross-sectional area of the proximal section is greater than the transverse cross-sectional area of the distal section. Two of the bores are configured to receive the corresponding distal sections, but not the proximal sections, of the two stepped projections, such that the projected height of the proximal section of the two stepped projections substantially defines the spacing between the hoop portions.

Growing community of inventors

Island Lake, IL, United States of America

David A Vogel