Patents by Inventor Richard C. Helmstetter

Richard C. Helmstetter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5605511
    Abstract: A golf club head having a body defining a heel, toe, top wall, sole defining a bottom wall, and a front wall defining an upwardly and rearwardly inclined front face, and comprising the body defining a forwardly extending main recess located rearwardly of the front wall; and the body also defining an undercut recess located directly rearwardly of the front wall and extending outwardly from the main recess toward one or more of the following:i) the top wallii) the bottom walliii) the toeiv) the heel;and structure on said front wall and located forwardly of the main recess for attenuating audible vibration created when a golf ball is struck by the front face.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: February 25, 1997
    Assignee: Callaway Golf Company
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: 5588922
    Abstract: A golf club head having a heel, toe, upper flange, lower flange, and a front wall defining an upwardly and rearwardly inclined front face comprising a head defining a forwardly extending main recess located rearwardly of the front wall, and between the upper and lower flanges; the upper flange having a lower surface exposed to the recess; the lower flange having an upper surface exposed to the recess; the lower and upper surfaces relatively diverging, forwardly, and toward reduced thickness portions of the flanges proximate the front wall.
    Type: Grant
    Filed: December 12, 1994
    Date of Patent: December 31, 1996
    Assignee: Callaway Golf Company
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: 5588923
    Abstract: In combination a golf club head having a front wall, the front wall having a rear side, and a composite adhered to the rear side, the composite including a selected swing weight adjusting intermediary layer, and a non-metallic rearwardly facing layer providing identification graphics which are rearwardly visible.
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: December 31, 1996
    Assignee: Callaway Golf Company
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: 5485997
    Abstract: In a putter head, the combination including a longitudinally elongated putter body in the form of a bar having a forward face for striking a golf ball, and rear side, top and bottom walls, a toe and a heel, between peripherally weighted toe and heel regions; a main recess sunk forwardly in the rear side; and an undercut recess extending outwardly from the inner extent of the main recess whereby a reduced thickness plate is formed between the recesses and the front face. A body face plate insert has a relatively heightened medial portion and two oppositely extending end portions of relatively reduced height.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: January 23, 1996
    Assignee: Callaway Golf Company
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: 5480152
    Abstract: A set of golf club heads, each head comprising a shell having toe and heel portions, and a front wall defining a ball striking face, and top or bottom walls, the ball striking faces of the heads having varying angularities with respect to vertical, the bottom wall of each head having a medial ridge, and forming two dished, similar shallow recesses, one recess between the ridge and heel portion and the other recess between the ridge and toe portion, the recesses located rearwardly of said front wall, one recess having an arcuate peripheral edge generally convex toward the heel portion and the other recess having an arcuate peripheral edge generally convex toward the toe portion.
    Type: Grant
    Filed: January 6, 1994
    Date of Patent: January 2, 1996
    Assignee: Callaway Golf Company
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: 5474296
    Abstract: A metallic, golf club head having a hollow interior, comprising a ball-striking front wall and the head having walls at the top, bottom, rear, heel and toe of the head; the front wall having variable thickness.
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: December 12, 1995
    Assignee: Callaway Golf Company
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: 5472203
    Abstract: A golf club head having a body defining a heel, toe, top wall, bottom wall, and a front wall defining an upwardly and rearwardly inclined front face and rear face, comprising a body defining a forwardly extending main recess located rearwardly of the front wall; the body also defining an undercut recess located rearwardly of the front wall rear face and extending outwardly from the main recess toward the top wall and toward the bottom wall, proximate the rear face; the head having rearward projection with downward thickening between the top wall and the main recess, and rearwardly of the undercut recess that extends toward the top wall, the undercut recess that extends toward the top wall having forward and rearward sides that extend generally parallel to one another; the rearward projection having a lower surface facing the main recess, the lower surface intersecting the rearward side of the undercut recess at an acute angle.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: December 5, 1995
    Assignee: Callaway Golf Company
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: 5470069
    Abstract: A golf club head comprising toe and heel portions, a front wall defining a ball-striking face, and top and bottom walls, the bottom wall characterized as having a medial ridge, and as forming two shallow recesses, one recess between the ridge and the heel portion, and the other recess between the ridge and the toe portion, the recesses everywhere spaced rearwardly from the front wall, the one recess having an arcuate peripheral edge generally convex toward the heel portion, and the other recess having an arcuate peripheral edge generally convex toward the toe portion.
    Type: Grant
    Filed: April 12, 1994
    Date of Patent: November 28, 1995
    Assignee: Callaway Golf Company
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: 5470068
    Abstract: A golf putter head comprising a body having toe and heel portions, a front wall defining a ball-striking face, and top and bottom walls, the bottom wall characterized as having a medial ridge, and as forming two dished shallow recesses, one recess between the ridge and the heel portion, and the other recess between the ridge and the toe portion, the recesses everywhere spaced rearwardly from the front wall, the one recess having an arcuate peripheral edge generally convex toward the heel portion, and the other recess having an arcuate peripheral edge generally convex toward the toe portion, the recesses being located in substantially mirror imaged positions with respect to a forwardly extending vertical plane bisecting the ridge.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: November 28, 1995
    Assignee: Callaway Golf Company
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: 5464218
    Abstract: In a putter head, the combination including a longitudinally elongated putter body in the form of a bar having a forward face for striking a golf ball, and rear side, top and bottom walls, a toe and a heel, between peripherally weighted toe and heel regions; a main recess sunk forwardly in the rear side; and an undercut recess extending outwardly from the inner extent of the main recess whereby a reduced thickness plate is formed between the recesses and the front face.
    Type: Grant
    Filed: July 7, 1994
    Date of Patent: November 7, 1995
    Assignee: Callaway Golf Company
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: 5460376
    Abstract: A golf club head comprising a shell having toe and heel portions, a rear wall, a front wall defining a ball-striking face, and top and bottom walls, the bottom wall characterized as having a medial ridge, and as forming two dished shallow recesses, one recess between the ridge and the heel portion, and the other recess between the ridge and the toe portion, the recesses spaced rearwardly from the front wall, the one recess having an arcuate peripheral edge generally convex toward the heel portion, and the other recess having an arcuate peripheral edge generally convex toward the toe portion, the recesses being located in substantially mirror imaged positions with respect to a forwardly extending vertical plane bisecting the ridge, the head, when viewed toward the bottom wall, presents a peripheral outline which, at the toe and rear of the head, has substantial spacing from the other dished shallow recess.
    Type: Grant
    Filed: June 19, 1994
    Date of Patent: October 24, 1995
    Assignee: Callaway Golf Company
    Inventors: Glenn Schmidt, Richard C. Helmstetter
  • Patent number: 5460377
    Abstract: A golf putter for use with a putter shaft supporting a head, the head comprising a putter body having a heel, toe, and sole defining a bottom wall, and a front wall, the body elongated between the heel and toe, and; the body having at least one recess projecting forwardly toward a plane defined by the front wall; and the body having a second recess sunk in the front wall, there being a non-metallic face plate having a periphery received in the second recess and bonded to the body.
    Type: Grant
    Filed: August 5, 1994
    Date of Patent: October 24, 1995
    Assignee: Callaway Golf Company
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: 5441264
    Abstract: A golf club head having a body defining a heel, toe, top wall, sole, and a front wall defining an upwardly and rearwardly inclined front face in ball-addressing position of the head, and comprisinga) said body defining a forwardly extending main recess located rearwardly of said front wall,b) and said body having upper and lower projections extending rearwardly from said front wall above and below said main recess, said projections being rearwardly elongated and said recess being horizontally elongated in said ball-addressing position of the head.
    Type: Grant
    Filed: May 17, 1994
    Date of Patent: August 15, 1995
    Assignee: Callaway Golf Company
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: D364206
    Type: Grant
    Filed: November 5, 1993
    Date of Patent: November 14, 1995
    Assignee: Callaway Golf Company
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: D364906
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: December 5, 1995
    Assignee: Callaway Golf Company
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: D365130
    Type: Grant
    Filed: January 6, 1994
    Date of Patent: December 12, 1995
    Assignee: Callaway Golf Company
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: D373161
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: August 27, 1996
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: D377674
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: January 28, 1997
    Assignee: Callaway Golf Company
    Inventors: Glenn H. Schmidt, Richard C. Helmstetter
  • Patent number: D377818
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: February 4, 1997
    Assignee: Callaway Golf Company
    Inventors: Steven D. Gray, Richard C. Helmstetter
  • Patent number: D378113
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: February 18, 1997
    Assignee: Callaway Golf Company
    Inventors: Augustin W. Rollinson, Richard C. Helmstetter