Patent US5883319A successfully refreshed from Google Patents.
US5883319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strings for musical instruments
Assignee: W.L. Gore and Associates Inc
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Filing: 1995-11-22
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Granted: 1999-03-16
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Expires: 2015-11-22
Abstract
Abstract An improved musical instrument string is provided. The string includes a polymer cover that protects the string, from contamination while maintaining the original "lively" sound of the musical string. By supplying the cover over a conventional string and preferable over a conventional wound string, the string is protected against contamination while also making the string easier to play. The preferred cover comprises at least one layer of expanded polytetrafluoroethylene (ePTFE) that is most preferably sealed with a polymer coating.
Inventors
- 👤 Charles G. Hebestreit
- 👤 David J. Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:19
CPC Classifications
G; G10; G10D; G10D3/00; G10D3/10; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
64 words
A string for a string musical instrument that comprises a wound string including a winding and having a longitudinal axis; a cover at least partially adhered to the wound string, the cover comprising at least one layer of polymer film, the polymer film being deformable along the longitudinal axis of the string so as to allow movement of the winding along the longitudinal axis.
Claim 2
Dependent Claim
64 words
A string for a string musical instrument that comprises a wound string including a winding and having a longitudinal axis; a cover at least partially adhered to the wound string, the cover comprising at least one layer of polymer film, the polymer film being deformable along the longitudinal axis of the string so as to allow movement of the winding along the longitudinal axis.
Claim 3
Dependent Claim
31 words
The string of claim 1 wherein the polymer comprises an expanded polytetrafluoroethylene (PTFE), the PTFE being expanded in at least a longitudinal direction to produce a microscopic structure including polymeric fibrils.
Claim 4
Dependent Claim
12 words
The string of claim 1 wherein the polymer comprises a porous polytetrafluoroethylene.
Claim 5
Dependent Claim
13 words
The string of claim 1 wherein the cover is attached with an adhesive.
Claim 6
Dependent Claim
20 words
The string of claim 1 wherein the cover is attached to the wound string with a discontinuous layer of adhesive.
Claim 7
Dependent Claim
20 words
The string of claim 1 wherein the cover is attached to the wound string with a continuous layer of adhesive.
Claim 8
Dependent Claim
50 words
The string of claim 1 wherein the cover is relatively non-deformable in a longitudinal direction and relatively deformable in a transverse direction; and the cover is wrapped around the wound string with the longitudinal direction of the cover oriented at an angle to the longitudinal axis of the wound string.
Claim 9
Dependent Claim
48 words
The string of claim 7 wherein the cover is attached to the wound string with a discontinuous layer of adhesive, the transverse deformability of the cover and the discontinuous layer of adhesive combine to allow movement of the winding parallel to the longitudinal axis of the wound string.
Claim 10
Dependent Claim
48 words
The string of claim 7 wherein the cover is attached to the wound string with a continuous layer of adhesive, the transverse deformability of the cover and the continuous layer of adhesive combine to allow movement of the winding parallel to the longitudinal axis of the wound string.
Claim 11
Dependent Claim
29 words
The string of claim 2 wherein the cover comprises at least two layers of expanded PTFE, with the two layers at different angles with respect to the longitudinal axis.
Claim 12
Dependent Claim
61 words
The string of claim 10 wherein each of the layers of expanded PTFE is bonded to at least one other PTFE layer; the layer of expanded PTFE closest to the wound string is attached to the wound string with a layer of adhesive that will deform to allow movement of the winding parallel to the longitudinal axis of the wound string.
Claim 13
Dependent Claim
16 words
The string of claim 11 wherein the layer of adhesive comprises a discontinuous layer of adhesive.
Claim 14
Dependent Claim
24 words
The string of claim 2 wherein the cover comprises at least two layers of expanded PTFE, each layer wrapped approximately parallel to the other.
Claim 15
Dependent Claim
16 words
The string of claim 11 wherein the layer of adhesive comprises a continuous layer of adhesive.
Claim 16
Dependent Claim
25 words
The string of claim 1 wherein the cover includes a coating adhered to an outside surface of at least one polymer layer of the polymer.
Claim 17
Dependent Claim
41 words
The string of claim 1 wherein the string is adapted to be mounted on a musical instrument having a fingering board; and the cover is attached only over a portion of the string adapted to be installed over the fingering board.
Claim 18
Dependent Claim
22 words
The string of claim 1 wherein the cover comprises a surface that serves to avoid extraneous noise from the string during play.
Claim 19
Dependent Claim
23 words
The string of claim 1 wherein the cover comprises a smooth surface that serves to protect a musician's fingers from abrasion during play.
Claim 20
Dependent Claim
14 words
The string of claim 1 wherein the cover extends over essentially the entire string.
Claim 21
Dependent Claim
9 words
A musical instrument including the string of claim 1.
Claim 22
Dependent Claim
29 words
The string of claim 1 wherein the polymer film is selected from the group consisting of fluorinated ethylene propylene, perfluoralkoxy resin, polytetrafluoroethylene, polyethylene, polypropylene, polyamide, polyimide, polyurethane, and polyester.
Claim 23
Dependent Claim
125 words
An improved string for a string instrument that comprises a wound string having a longitudinal axis, a core, and winding wrapped around the core; a polymeric cover wrapped around the wound string, the polymeric cover being formed from a material being relatively non-deformable in a longitudinal direction and relatively deformable in a transverse direction, the cover being wrapped around the wound string with the longitudinal direction of the cover oriented at an angle to the longitudinal axis of the wound string; and an adhesive layer bonding the polymeric cover to the wound string, the adhesive layer preventing separation of the cover from the wound string while combining with the cover to allow movement of the windings parallel to the longitudinal axis of the wound string.
Claim 24
Dependent Claim
125 words
An improved string for a string instrument that comprises a wound string having a longitudinal axis, a core, and winding wrapped around the core; a polymeric cover wrapped around the wound string, the polymeric cover being formed from a material being relatively non-deformable in a longitudinal direction and relatively deformable in a transverse direction, the cover being wrapped around the wound string with the longitudinal direction of the cover oriented at an angle to the longitudinal axis of the wound string; and an adhesive layer bonding the polymeric cover to the wound string, the adhesive layer preventing separation of the cover from the wound string while combining with the cover to allow movement of the windings parallel to the longitudinal axis of the wound string.
Claim 25
Dependent Claim
22 words
The string of claim 12 wherein the adhesive layer comprises a discontinuous layer of adhesive between the cover and the wound string.
Claim 26
Dependent Claim
22 words
The string of claim 22 wherein the adhesive layer comprises a continuous layer of adhesive between the cover and the wound string.
Claim 27
Dependent Claim
14 words
The string of claim 22 wherein the polymeric cover comprises multiple layers of polymer.
Claim 28
Dependent Claim
22 words
The string of claim 25 wherein the multiple layers of polymer are oriented at an angle to each other and bonded together.
Claim 29
Dependent Claim
18 words
The string of claim 25 wherein the multiple layers of polymer are oriented approximately parallel to each other.
Claim 30
Dependent Claim
30 words
The string of claim 22 wherein the polymer cover comprises an expanded polytetrafluoroethylene (PTFE), the PTFE being expanded in its longitudinal direction to produce a microscopic structure comprising polymeric fibrils.
Claim 31
Dependent Claim
21 words
The string of claim 28 wherein the cover includes a layer of polymer adhered to the outside of the expanded PTFE.
Claim 32
Dependent Claim
22 words
The string of claim 22 wherein the adhesive is selected from the group consisting of polyurethane, fluorinated ethylene propylene, and perfluoralkoxy resin.
Claim 33
Dependent Claim
9 words
A musical instrument including the string of claim 22.
Claim 34
Dependent Claim
29 words
The string of claim 22 wherein the polymeric cover is selected from the group consisting of fluorinated ethylene propylene, perfluoralkoxy resin, polytetrafluoroethylene, polyethylene, polypropylene, polyamide, polyimide, polyurethane, and polyester.
Claim 35
Dependent Claim
66 words
A musical instrument string made by the process comprising: providing a string having a longitudinal axis and a transverse direction; covering the string with a cover, the cover being relatively deformable along the longitudinal axis of the string and relatively non-deformable along the transverse direction of the string; and attaching the cover to the string so that the cover remains affixed to the string during play.
Claim 36
Dependent Claim
66 words
A musical instrument string made by the process comprising: providing a string having a longitudinal axis and a transverse direction; covering the string with a cover, the cover being relatively deformable along the longitudinal axis of the string and relatively non-deformable along the transverse direction of the string; and attaching the cover to the string so that the cover remains affixed to the string during play.
Claim 37
Dependent Claim
24 words
The musical instrument string made in accordance with claim 33, that further comprises forming the cover with at least two layers of polymer material.
Claim 38
Dependent Claim
22 words
The musical instrument string made in accordance with claim 33 that further comprises attaching the cover to the string with an adhesive.
Claim 39
Dependent Claim
19 words
The process of claim 33 that further comprises mounting the string with the attached cover on a musical instrument.
Claim 40
Dependent Claim
55 words
A musical instrument string made by the process comprising: providing a string having a longitudinal axis; covering the string with a cover of polymeric film; attaching the cover to the string so that the cover remains affixed to the string during play; wherein the cover is substantially non-dampening to the tonal quality of the string.
Claim 41
Dependent Claim
55 words
A musical instrument string made by the process comprising: providing a string having a longitudinal axis; covering the string with a cover of polymeric film; attaching the cover to the string so that the cover remains affixed to the string during play; wherein the cover is substantially non-dampening to the tonal quality of the string.
Claim 42
Dependent Claim
19 words
The process of claim 37 that further comprises mounting the string with the attached cover on a musical instrument.
Claim 43
Dependent Claim
83 words
A musical instrument having strings that are fingered during play that comprises at least one wound string including a winding and having a longitudinal axis; a cover around the wound string, the cover comprising at least one layer of polymer film at least partially adhered to the string, the polymer film being sufficiently deformable along the longitudinal axis of the string so as to maintain the tonal quality of the string; and wherein the cover avoids squeaking of the wound string when played.
Claim 44
Dependent Claim
83 words
A musical instrument having strings that are fingered during play that comprises at least one wound string including a winding and having a longitudinal axis; a cover around the wound string, the cover comprising at least one layer of polymer film at least partially adhered to the string, the polymer film being sufficiently deformable along the longitudinal axis of the string so as to maintain the tonal quality of the string; and wherein the cover avoids squeaking of the wound string when played.
Claim 45
Dependent Claim
35 words
A musical instrument string comprising a core; a wire having a polymeric coating attached around the wire to form a coated wire; wherein the coated wire is wound around the core to form a winding.
Claim 46
Dependent Claim
35 words
A musical instrument string comprising a core; a wire having a polymeric coating attached around the wire to form a coated wire; wherein the coated wire is wound around the core to form a winding.
References Cited (Backward Citations)
GB690031A
Cited
DE963830C
Cited
US3826171A
Cited
US3953566A
Cited
US3962153A
Cited
US4187390A
Cited
US4096227A
Cited
US4339499A
Cited
US4326444A
Cited
US4382358A
Cited
DE3133231A1
Cited
DE3326006A1
Cited
US4539228A
Cited
GB2187217A
Cited
JPS6357799A
Cited
JPS63182441A
Cited
WO1990001766A1
Cited
US5107852A
Cited
DE4109334A1
Cited
US5610348A
Cited
US5535658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-03-15 | 2002-09-14 | 2003-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-15 | 2006-09-14 | 2007-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-15 | 2010-09-14 | 2011-03-16 | $7700.00 | Window Closed / Lapsed |