US4591160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf club head
Assignee: Pininfarina SpA
•
Filing: 1984-03-16
•
Granted: 1986-05-27
•
Expires: 2004-03-16
Abstract
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.
Inventors
- 👤 Alessandro Piragino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:06
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/047; A63B60/00; A63B60/52; A63B2209/00; A63B53/0433; Y; Y10; Y10S; Y10S273/00; Y10S273/01; Y10S273/06; Y10S273/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
92 words
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.
Claim 2
Dependent Claim
92 words
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.
Claim 3
Dependent Claim
29 words
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.
Claim 4
Dependent Claim
17 words
A golf club head according to claim 1 wherein said shaped core body material is cast polyurethane.
Claim 5
Dependent Claim
18 words
A golf club head according to claim 2 wherein the shaped core body material is cast of polyurethane.
References Cited (Backward Citations)
US3199874A
Cited
US3390881A
Cited
US3507495A
Cited
US3616101A
Cited
US3993314A
Cited
US4244855A
Cited
US4451041A
Cited
US4438931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-26 | 1989-11-25 | 1990-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-26 | 1993-11-25 | 1994-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-26 | 1997-11-25 | 1998-05-27 | $7700.00 | Window Closed / Lapsed |