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US 2018/0021634 A1Published application
Golf Ball
AssigneeCallaway Golf Company
InventorDavid Bartels
Life of this patent
Estimating the term…
Abstract
An ultra-low compression golf ball is disclosed herein. The core preferably has a PGA compression less than 30. The mantle layer and cover have approximately the same thickness. The cover comprises a thermoplastic polyurethane material and has a specific gravity greater than the core and mantle layer. The golf ball has a PGA compression less than 75 and a COR of at least 0.780.
Claims8
A golf ball consisting essentially of:
- a multi-layer core having a diameter ranging from 1.50 inches to 1.60 inches;
- a mantle layer disposed over the multi-layer core;
- and
- a cover disposed over the mantle layer;
- wherein the golf ball has a PGA compression no greater than 75;
- wherein the golf ball has an Aggregate Impact Ratio (AIR) greater than 1.65, wherein
- AIR=(CT150/CT75)×(CA150/CA75)
- wherein CT150 is a golf ball contact time at an impact speed of 150 feet per second, CT75 is a golf ball contact time at an impact speed of 75 feet per second, CA150 is a golf ball contact area at an impact speed of 150 feet per second, and CA75 is a golf ball contact area at an impact speed of 75 feet per second.
5 more elements
A golf ball comprising:
- a core having a diameter ranging from 1.50 inches to 1.60 inches;
- a mantle layer disposed over the core;
- and
- a cover disposed over the mantle layer;
- wherein the golf ball has an Aggregate Impact Ratio (AIR) greater than 1.65, wherein
- AIR=(CT150/CT75)×(CA150/CA75)
- wherein CT150 is a golf ball contact time at an impact speed of 150 feet per second, CT75 is a golf ball contact time at an impact speed of 75 feet per second, CA150 is a golf ball contact area at an impact speed of 150 feet per second, and CA75 is a golf ball contact area at an impact speed of 75 feet per second.
4 more elements
A golf ball comprising:
- a core having a diameter ranging less than 1.565 inches;
- a mantle layer disposed over the core;
- and
- a cover disposed over the mantle layer;
- wherein the golf ball has a diameter of at least 1.68 inches;
- wherein the golf ball has a PGA compression no greater than 75;
- wherein the core of the golf ball has a Relative Impact Ratio (RIR) greater than 2.40, wherein
- RIR=(CA150/CA75)×(CT150/CT75)
- wherein CT150 is a core contact time at an impact speed of 150 feet per second, CT75 is a core contact time at an impact speed of 75 feet per second, CA150 is a core contact area at an impact speed of 150 feet per second, and CA75 is a core contact area at an impact speed of 75 feet per second.
6 more elements
Dependencies are inferred from the claim text.