Patent US4733866A successfully refreshed from Google Patents.
US4733866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable string aligner for rackets
Assignee: Individual
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Filing: 1986-11-07
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Granted: 1988-03-29
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Expires: 2006-11-07
Abstract
Abstract A portable string aligner for tennis rackets, racquetball rackets, and for other game equipment in which a racket is used. The aligner combines an elongated rectangular base member with multiple spacing pegs removably fitted in a retainer track. The spacing-peg tops protruding externally through a track opening in one surface of the base member are of sufficient length and are shaped to fit through the squares formed by the vertical and horizontal cross-over of the racket strings in a strung racket head. By hand pressuring the spacing pegs through the racket string squares, the racket strings can be restored to proper alignment on the court during pauses in play.
Inventors
- 👤 Jacob F. Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:09
CPC Classifications
A; A63; A63B; A63B51/00; A63B51/015
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
177 words
A portable string aligner comprising: an elongated rectangular base member having a T-shaped retainer groove located therein, said retainer groove having a bottom surface; a plurality of spacing pegs removably fitted within said retainer groove, said spacing pegs comprising T-shaped members having lower portions that correspond to the shape of the retainer groove, said spacing pegs extending above the surface of the base member so that they can be inserted between the crossing strings of a racket and thereby align the strings, said spacing pegs having a bottom surface that contacts the bottom surface of the retainer groove and the bottom surface of both the retainer groove and the spacing pegs having positioning means located thereon for selectively positioning the spacing pegs in the retaining groove; said aligner further comprising an end cap fitted over each end of the base member so as to prevent the spacing pegs from sliding out of the retaining groove and a track filler positionable between the spacing peg and one of the end caps for preventing movement of the spacing pegs.
Claim 2
Dependent Claim
177 words
A portable string aligner comprising: an elongated rectangular base member having a T-shaped retainer groove located therein, said retainer groove having a bottom surface; a plurality of spacing pegs removably fitted within said retainer groove, said spacing pegs comprising T-shaped members having lower portions that correspond to the shape of the retainer groove, said spacing pegs extending above the surface of the base member so that they can be inserted between the crossing strings of a racket and thereby align the strings, said spacing pegs having a bottom surface that contacts the bottom surface of the retainer groove and the bottom surface of both the retainer groove and the spacing pegs having positioning means located thereon for selectively positioning the spacing pegs in the retaining groove; said aligner further comprising an end cap fitted over each end of the base member so as to prevent the spacing pegs from sliding out of the retaining groove and a track filler positionable between the spacing peg and one of the end caps for preventing movement of the spacing pegs.
Claim 3
Dependent Claim
35 words
The portable string aligner as set forth in claim 1, wherein the portion of said spacing pegs that extends above the surface of the base member is configured in a pyramidal, bullet or bevelled shape.
Claim 4
Dependent Claim
32 words
The portable string aligner as set forth in claim 1, wherein said positioning means comprises dimples on the bottom of said spacing pegs and knobs on the bottom of said retaining groove.
Claim 5
Dependent Claim
31 words
The portable string aligner as set forth in claim 1, wherein said positioning means comprises interfitting corrugations on the bottom of the spacing pegs and the bottom of the retaining groove.
Claim 6
Dependent Claim
26 words
The portable string aligner as set forth in claim 1 wherein the protruding spacing pegs are sized for use with the strung heads of tennis rackets.
Claim 7
Dependent Claim
26 words
The portable string aligner as set forth in claim 1 wherein the protruding spacing pegs are sized for use with the strung heads of racquetball rackets.
Claim 8
Dependent Claim
30 words
The portable string aligner as set forth in claim 1 wherein the protruding spacing pegs are variously sized for multi-purpose use with the strung heads of squash and badminton rackets.
References Cited (Backward Citations)
US4089523A
Cited
US4489942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-29 | 1991-09-28 | 1992-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-29 | 1995-09-28 | 1996-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-29 | 1999-09-28 | 2000-03-29 | $7700.00 | Window Closed / Lapsed |