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US5605327A Expired / Lapsed US ⏱️ 0.0 years remaining

Shock damping racquet butt cap

Assignee: Individual
•
Filing: 1995-10-18
•
Granted: 1997-02-25
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Expires: 2015-10-18
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Abstract

Abstract A butt cap for a racquet comprises walls defining a cavity for slidably engaging the handle of the racquet and walls defining a butt ballast cavity for containing a butt ballast. The butt cap is preferably a ellipsoidal, rounded, tapering approximate egg-shape protruding in excess of 1 cm axially beyond the handle end of the racquet so as to add length to a racquet and provide a comfortable surface such that the player may simultaneously grip the handle and the distal extension, particularly on the serve. The advantage of a butt weight for adding power and control to sports striking implements in general is discussed. A racquet having a distal particulate butt ballast not only damps shock but prevents it by adding more mass to the racquet at the distal end thereof. The butt ballast is preferably of loose metal balls approximately 1 mm in diameter. Retrofit of the butt cap in replacement of a conventional butt cap is possible. Means for attachment of the butt cap include axial extensions extending along the handle.

Inventors

  • 👤 Wilmot H. McCutchen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 02:37
CPC Classifications
A; A63; A63B; A63B49/00; A63B49/02; A63B49/08; A63B60/00; A63B60/06; A63B60/16; A63B60/54

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 114 words
A butt cap for a racquet, the racquet having a polygonal handle terminating in a handle end and having a longitudinal axis extending along a centerline of the handle, the butt cap comprising: walls defining a polygonal cavity for slidably engaging the handle, and a distal extension continuous with said cavity defining walls and protruding at least 1 cm along the longitudinal axis beyond the handle end; the butt cap having a truncated egg-shape with smoothly tapering longitudual sections through said cavity defining walls and said distal extension such that a hand might comfortably grasp around said cavity defining walls and said distal extension simultaneously without encountering any low radius of curvature radial projection.
Claim 2
Dependent Claim 114 words
A butt cap for a racquet, the racquet having a polygonal handle terminating in a handle end and having a longitudinal axis extending along a centerline of the handle, the butt cap comprising: walls defining a polygonal cavity for slidably engaging the handle, and a distal extension continuous with said cavity defining walls and protruding at least 1 cm along the longitudinal axis beyond the handle end; the butt cap having a truncated egg-shape with smoothly tapering longitudual sections through said cavity defining walls and said distal extension such that a hand might comfortably grasp around said cavity defining walls and said distal extension simultaneously without encountering any low radius of curvature radial projection.
Claim 3
Dependent Claim 23 words
The butt cap of claim 1, wherein the butt cap is made of polyurethane having a hardness of at least 80 Shore A.
Claim 4
Dependent Claim 18 words
The butt cap of claim 1, wherein a particulate butt ballast is disposed within the butt ballast cavity.
Claim 5
Dependent Claim 14 words
The butt cap of claim 1, wherein said truncated egg-shape comprises tapering longitudinal facets.
Claim 6
Dependent Claim 13 words
The butt cap of claim 1, further comprising striations on the distal extension.
Claim 7
Dependent Claim 13 words
The butt cap of claim 1, further comprising means for attaching a thong.
Claim 8
Dependent Claim 21 words
The butt cap of claim 1, further comprising at least one pair of axial extensions for extending along a racquet handle.
Claim 9
Dependent Claim 12 words
The butt cap of claim 7, wherein the axial extensions comprise tape.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2000-02-25 2000-08-26 2001-02-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2004-02-25 2004-08-26 2005-02-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2008-02-25 2008-08-26 2009-02-25 $7700.00 Window Closed / Lapsed

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