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US3693491A Expired / Lapsed US ⏱️ 0.0 years remaining

Musical instrument with cam controlling reed vibration

Assignee: Individual
•
Filing: 1972-01-17
•
Granted: 1972-09-26
•
Expires: 1992-01-17
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Abstract

Abstract A musical instrument including a plurality of tuned vibratory reeds, each having an electromagnetic pickup associated therewith and an amplifier for amplifying the output from the reeds; and a plucking assembly for selectively vibrating each of the reeds. The plucking assembly includes a pedal pivotally mounted in the instrument with a contact or plucking head pivotally mounted thereon to engage the reed as the pedal is depressed. A cam is provided for pivoting the plucking head after engagement with the reed to pluck or deflect same and for preventing contact between the head and the reed until the pedal has been released and then depressed again. The electromagnetic pickup includes a permanent magnet selectively positionable with respect to each reed to finely tune same.

Inventors

  • 👤 Wade E Creager

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 21:33
CPC Classifications
G; G10; G10H; G10H3/00; G10H3/12; G10H3/14; G10H3/20; G10D; G10D13/00; G10D13/01; G10D13/08; G10D13/09

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 311 words
In a musical instrument including a plurality of individually tuned vibratory members of substantially equal length, said members being secured at one end and free at the other and extending in parallel relationship, a pivotally mounted elongated member associated with each vibratory member, a plucking device pivotally mounted on one end of each of said elongated members, each plucking device comprising a plucking plate and a cam follower mounted at opposite ends of said plucking device and on opposite sides of the pivot thereof, said plucking plate being so positioned that when said plucking device is positioned on its pivot parallel to said elongated member, said plucking plate will engage the associated vibratory member adjacent its free end when the elongated member is moved about its pivot, a U-shaped cam member fixedly mounted adjacent said cam follower with the cam follower received between the legs of said U-shaped memBer and with one of the legs of said U-shaped member so positioned as to engage said cam follower at substantially the time when said plucking plate engages said vibratory member, so that upon further movement of said elongated member about its pivot the plucking member will pivot about the point of engagement of the cam and follower and the plucking plate will be moved out of engagement with the vibratory member, the other leg of said Ushaped member being so positioned that, on return of said elongated member, said other leg will engage the cam follower after the plucking plate has returned past the end of the vibratory member and will restore the plucking member to a position parallel to the elongated member; stop means for arresting the pivotal movement of said elongated member in a position in which said cam follower engages said other leg of the U-shaped member, and resilient means normally holding said elongated member against said stop means.
Claim 2
Dependent Claim 311 words
In a musical instrument including a plurality of individually tuned vibratory members of substantially equal length, said members being secured at one end and free at the other and extending in parallel relationship, a pivotally mounted elongated member associated with each vibratory member, a plucking device pivotally mounted on one end of each of said elongated members, each plucking device comprising a plucking plate and a cam follower mounted at opposite ends of said plucking device and on opposite sides of the pivot thereof, said plucking plate being so positioned that when said plucking device is positioned on its pivot parallel to said elongated member, said plucking plate will engage the associated vibratory member adjacent its free end when the elongated member is moved about its pivot, a U-shaped cam member fixedly mounted adjacent said cam follower with the cam follower received between the legs of said U-shaped memBer and with one of the legs of said U-shaped member so positioned as to engage said cam follower at substantially the time when said plucking plate engages said vibratory member, so that upon further movement of said elongated member about its pivot the plucking member will pivot about the point of engagement of the cam and follower and the plucking plate will be moved out of engagement with the vibratory member, the other leg of said Ushaped member being so positioned that, on return of said elongated member, said other leg will engage the cam follower after the plucking plate has returned past the end of the vibratory member and will restore the plucking member to a position parallel to the elongated member; stop means for arresting the pivotal movement of said elongated member in a position in which said cam follower engages said other leg of the U-shaped member, and resilient means normally holding said elongated member against said stop means.
Claim 3
Dependent Claim 53 words
A musical instrument as in claim 1 wherein said U-shaped member comprises two angle members with one leg of each such member overlapping one leg of the other, and wherein means are provided for clamping said angle members in adjusted overlapping position for varying the spacing between the legs of said U-shaped member.
Claim 4
Dependent Claim 31 words
A musical instrument as in claim 2 wherein a single U-shaped cam member received all the cam followers so that a single adjustment regulates the positions of all the plucking devices.
Claim 5
Dependent Claim 58 words
A musical instrument as in claim 2 wherein each vibratory member is provided with a damping element which is normally in engagement with said vibratory member, and wherein each elongated member is provided with a rod adapted to engage the corresponding damping member and move it out of such engagement when the plucking plate engages the vibratory member.

References Cited (Backward Citations)

US2994239A Cited
US2626325A Cited
US2905039A Cited
US3083605A Cited
US3064517A Cited
US3183759A Cited
US3165022A Cited
US3334172A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-09-26 1976-03-27 1976-09-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-09-26 1980-03-27 1980-09-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-09-26 1984-03-27 1984-09-26 $7700.00 Window Closed / Lapsed

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