US4332388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf club head
Assignee: MUFG Union Bank NA
•
Filing: 1980-02-21
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Granted: 1982-06-01
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Expires: 2000-02-21
Abstract
Abstract A golf club head, specifically a wood for use on the fairway or in trouble spots, such as sand traps, hard pan, or in the rough. The wood incorporates a metal sole plate which comprises a major portion of the lower face of the head and at least half of the total weight of the head. The sole plate has a pair of spaced parallel runners extending well below the plate and being of substantial cross section, the runners having inclined leading faces to ride or skid on the ground surface with minimum penetration. The weight and shape of the sole plate provides a low center of mass in the head, with the weight distributed over the lower face.
Inventors
- 👤 Thomas L. Crow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:01
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/0466; A63B60/00; A63B53/0433
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
253 words
A golf club head comprising: a wood body having a front striking face; a lower sole with a toe portion and a heel portion, and means for attachment to a shaft; a metal sole plate fixed to said sole and having a pair of substantially semi-circular in cross section spaced parallel runners projecting downwardly therefrom and extending from front to rear across the entire sole plate; said sole plate having a leading edge surface below said striking face; said runners having flat end surfaces comprising leading faces, which flat end surfaces incline downwardly and rearwardly from said leading edge at an angle of approximately 55 degrees to the longitudinal front to rear lower surface of the respective runners; said sole plate leading edge surface is parallel with and mates with said leading faces of said runners forming a continuous substantially flat surface; each of said runners having the same cross-sectional area and the same longitudinal semi-circular configuration, which cross-sectional area and semi-circular configuration are the same throughout the length of each of the runners from the front edge of the sole plate to the rear edge of the sole plate; said sole plate extends over a major portion of said sole and constitutes approximately 55 percent of the total weight of the head; said sole plate having slotted openings on each side thereof that extend to the respective sides of said runners; and portions of the sole of the wood body fitting in said slots and against the respective sides of said runners.
Claim 2
Dependent Claim
253 words
A golf club head comprising: a wood body having a front striking face; a lower sole with a toe portion and a heel portion, and means for attachment to a shaft; a metal sole plate fixed to said sole and having a pair of substantially semi-circular in cross section spaced parallel runners projecting downwardly therefrom and extending from front to rear across the entire sole plate; said sole plate having a leading edge surface below said striking face; said runners having flat end surfaces comprising leading faces, which flat end surfaces incline downwardly and rearwardly from said leading edge at an angle of approximately 55 degrees to the longitudinal front to rear lower surface of the respective runners; said sole plate leading edge surface is parallel with and mates with said leading faces of said runners forming a continuous substantially flat surface; each of said runners having the same cross-sectional area and the same longitudinal semi-circular configuration, which cross-sectional area and semi-circular configuration are the same throughout the length of each of the runners from the front edge of the sole plate to the rear edge of the sole plate; said sole plate extends over a major portion of said sole and constitutes approximately 55 percent of the total weight of the head; said sole plate having slotted openings on each side thereof that extend to the respective sides of said runners; and portions of the sole of the wood body fitting in said slots and against the respective sides of said runners.
Claim 3
Dependent Claim
42 words
A golf club head according to claim 1 wherein the cross section of each of said runners has a depth of about 0.30 inch and a width of about 0.55 inch and said runners are spaced apart approximately 1.25 inches between centers.
Claim 4
Dependent Claim
80 words
A golf club head according to claim 1, wherein: said sole plate having a rear edge surface below the sole of the wood; said runners having flat rear end surfaces, which flat end surfaces incline downwardly and forwardly from said rear edge at an angle to the longitudinal front-to-rear lower surface of the respective runners; and said sole plate rear edge surface is parallel with and mates with said rear faces of said runners forming a continuous substantially flat surface.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |