US3735076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic musical instrument key-operated switch assembly having vibration-absorber attached to movable contact member
Assignee: Nippon Gakki Co Ltd
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Filing: 1971-12-22
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Granted: 1973-05-22
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Expires: 1991-12-22
Abstract
Abstract In a key-operated switch assembly having a movable and a stationary contact member, a soft shock or vibration absorbing member is attached to the movable contact member. The shock absorbing member is made of elastic or resilient material having greater shock or vibration absorbing capacity and is molded into one integral piece along with an actuator actuating the movable contact member. The shock absorbing member may be provided with a thin tongue-like projection extending toward the free end of the contact member so as to obtain a better shock absorbing effect.
Inventors
- 👤 M Iijima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:47
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/32; G10H1/34; G10H1/344; H; H01; H01H; H01H1/00; H01H1/50; H01H21/00; H01H21/02; H01H21/18; H01H21/22; G10H2220/00; G10H2220/155; G10H2220/265; G10H2220/275; G10H2220/285
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
141 words
In a key-operated switch assembly having a key, a stationary contact member, and a movable contact member which is movable to and away from the stationary contact member, the improvement wherein there is provided an integral piece of a material promoting damping of vibration, said integral piece comprising a vibration abosrbing member attached to the movable contact member, a tongue-like projecting member made of the same material as that of the vibration absorbing member and provided over one side of the movable contact member, said tongue-like projecting member extending from said vibration absorbing member and being in face-to-face contact with the movable contact member, and an actuating member made of the same material as that of the vibration absorbing member, said actuating member extending from said vibration absorbing member toward the key so as to be directly actuated by the key.
Claim 2
Dependent Claim
141 words
In a key-operated switch assembly having a key, a stationary contact member, and a movable contact member which is movable to and away from the stationary contact member, the improvement wherein there is provided an integral piece of a material promoting damping of vibration, said integral piece comprising a vibration abosrbing member attached to the movable contact member, a tongue-like projecting member made of the same material as that of the vibration absorbing member and provided over one side of the movable contact member, said tongue-like projecting member extending from said vibration absorbing member and being in face-to-face contact with the movable contact member, and an actuating member made of the same material as that of the vibration absorbing member, said actuating member extending from said vibration absorbing member toward the key so as to be directly actuated by the key.
Claim 3
Dependent Claim
33 words
A key-operated switch assembly as claimed in claim 1 wherein the movable contact member is perforated with at least one hole, and said integral piece is engaged in said at least one hole.
Claim 4
Dependent Claim
37 words
A key-operated switch assembly as claimed in claim 1 wherein the movable contact member has one end fixed and the other end free, and said tongue-like member extends toward said free end of said movable contact member.
Claim 5
Dependent Claim
27 words
A key-operated switch assembly as claimed in claim 1 wherein said tongue-like projecting member is in face-to-face contact with the upper surface of said movable contact member.
Claim 6
Dependent Claim
95 words
In a key-operated switch assembly having a key, a stationary contact member, and a movable contact member which is movable to and away from the stationary contact member, the improvement wherein there is provided an integral piece of a material promoting damping of vibration, said integral piece comprising a vibration absorbing member attached to the movable contact member, and an actuating member made of the same material as that of the vibration absorbing member, said actuating member extending from said vibration absorbing member toward the key so as to be directly actuated by the key.
Claim 7
Dependent Claim
95 words
In a key-operated switch assembly having a key, a stationary contact member, and a movable contact member which is movable to and away from the stationary contact member, the improvement wherein there is provided an integral piece of a material promoting damping of vibration, said integral piece comprising a vibration absorbing member attached to the movable contact member, and an actuating member made of the same material as that of the vibration absorbing member, said actuating member extending from said vibration absorbing member toward the key so as to be directly actuated by the key.
Claim 8
Dependent Claim
33 words
A key-operated switch assembly as claimed in claim 4 wherein the movable contact member is perforated with at least one hole, and said integral piece is engaged in said at least one hole.
Claim 9
Dependent Claim
104 words
In a key-operated switch assembly having a key, a stationary contact member, and a movable contact member disposed movably to and away from the stationary contact member, the improvement wherein there is provided an integral piece of a material promoting damping of vibration, said integral piece comprising a vibration absorbing member attached to the movable contact member, and a tongue-like projecting member made of the same material as that of the vibration absorbing member and provided over one side of the movable contact member, said tongue-like projecting member extending from said vibration absorbing member and being in face-to-face contact with the movable contact member.
Claim 10
Dependent Claim
104 words
In a key-operated switch assembly having a key, a stationary contact member, and a movable contact member disposed movably to and away from the stationary contact member, the improvement wherein there is provided an integral piece of a material promoting damping of vibration, said integral piece comprising a vibration absorbing member attached to the movable contact member, and a tongue-like projecting member made of the same material as that of the vibration absorbing member and provided over one side of the movable contact member, said tongue-like projecting member extending from said vibration absorbing member and being in face-to-face contact with the movable contact member.
Claim 11
Dependent Claim
33 words
A key-operated switch assembly as claimed in claim 7 wherein the movable contact member is perforated with at least one hole, and said integral piece is engaged in said at least one hole.
Claim 12
Dependent Claim
37 words
A key-operated switch assembly as claimed in claim 7 wherein the movable contact member has one end fixed and the other end free, and said tongue-like member extends toward said free end of said movable contact member.
Claim 13
Dependent Claim
27 words
A key-operated switch assembly as claimed in claim 7 wherein said tongue-like projecting member is in face-to-face contact with the upper surface of said movable contact member.
Claim 14
Dependent Claim
173 words
In a key-operated switch assembly having a key, a plurality of stationary contact members vertically arranged, and a plurality of movable contact members corresponding to the respective stationary contact members and being vertically spaced from each other, the improvement comprising; a first integral piece of a material promoting damping of vibration, said first integral piece comprising a first vibration absorbing member attached to one of the movable contact members, and a first actuating member made integral with, and of the same material as that of, the first vibration absorbing member, said first actuating member extending from said first vibration absorbing member toward the key so as to be directly acuated by the key; and second integral pieces of a material promoting damping of vibration, each of said second integral pieces comprising a vibration absorbing member respectively attached to each of the other movable contact members, adjacent ones of said first and second integral pieces being superimposed successively on each other so that all of said movable contact members are actuated by the key.
Claim 15
Dependent Claim
173 words
In a key-operated switch assembly having a key, a plurality of stationary contact members vertically arranged, and a plurality of movable contact members corresponding to the respective stationary contact members and being vertically spaced from each other, the improvement comprising; a first integral piece of a material promoting damping of vibration, said first integral piece comprising a first vibration absorbing member attached to one of the movable contact members, and a first actuating member made integral with, and of the same material as that of, the first vibration absorbing member, said first actuating member extending from said first vibration absorbing member toward the key so as to be directly acuated by the key; and second integral pieces of a material promoting damping of vibration, each of said second integral pieces comprising a vibration absorbing member respectively attached to each of the other movable contact members, adjacent ones of said first and second integral pieces being superimposed successively on each other so that all of said movable contact members are actuated by the key.
Claim 16
Dependent Claim
63 words
A key-operated switch assembly as claimed in claim 11 wherein each of said integral pieces further comprises a tongue-like projecting member made of the same material as that of each vibration absorbing member and provided over one side of the movable contact member, said tongue-like projecting member extending from said vibration absorbing member and being in face-to-face contact with the movable contact member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |