Golf club head

• US 4,591,160 A
• Filed: 03/16/1984
• Issued: 05/27/1986
• Est. Priority Date: 03/17/1983
• Status: Expired due to Fees

• Current Assignee: Pininfarina Extra SRL VIA Ottavio Revel N6 Torino
• Original Assignee: Pininfarina SPA (Tech Mahindra Limited)
• Inventors: Piragino, Alessandro
• Primary Examiner(s): Pinkham, Richard C.
• Assistant Examiner(s): Mosconi, Vincent A.
• Application Number:
  US06/590,397
• Time in Patent Office: 802 Days
• Field of Search: 273/167 A, 273/167 R, 273/167 F, 273/167 H, 273/169, 273/170, 273/173, 273/231, 273/167 J, 273/167 K, 273/77 R, 273/DIG. 1, 273/DIG. 3 , 273/DIG. 4, 273/DIG. 6, 273/DIG. 8
• US Class Current: 473/326
• CPC Class Codes: A63B 2209/00 Characteristics of used materials
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/047 iron-type
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like
• CPC Class Codes: A63B 60/52 with slits
• CPC Class Codes: Y10S 273/01 Carbonate
• CPC Class Codes: Y10S 273/06 Nylon
• CPC Class Codes: Y10S 273/08 Urethane

Abstract

The golf club head comprises a shaped core body of material selected from synthetic and natural rubber and an outer shell closely surrounding substantially the entire surface of the core body of polymeric thermoplastic material selected from the group of polycarbonate, polyamide and polybutylene-terephthalate. According to a preferred embodiment, the golf club head further comprises a center core body embedded within the core body and consisting of closed envelope completely filled with liquid.

Claims

1. A golf club head comprising a shaped core body of materials selected from the group consisting of synthetic and natural rubber, a center core body having a substantially spherical shape embedded within said shaped core body and consisting of a closed envelope of plastic material completely filled with liquid, and an outer shell closely surrounding substantially the entire surface of said shaped core body, said shell being made of polymeric thermoplastic materials selected from the group consisting of polycarbonate, polyamide and polybutylene-terephthalate and having a hardness of at least 70 Shore D.

2. A golf club head according to claim 1 wherein the center of gravity of said center core body coincides with the center of gravity of said golf club head.

3. A golf club head according to claim 1 wherein said shaped core body material is cast polyurethane.

4. A golf club head according to claim 2 wherein the shaped core body material is cast of polyurethane.