Patent US3654831A successfully refreshed from Google Patents.
US3654831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyboard
Assignee: Individual
•
Filing: 1969-06-20
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Granted: 1972-04-11
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Expires: 1989-06-20
Abstract
Abstract A key and mounting assembly for use in a keyboard of a musical instrument and the like. The assembly includes a key lever and a mounting element for pivotally mounting the key lever in the keyboard. Improved means are provided for connecting the mounting element to the key lever.
Inventors
- 👤 Umberto Grilli
- 👤 Bruno Sturba
- 👤 Artemio Vivani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:23
CPC Classifications
E; E05; E05D; E05D7/00; E05D7/08; E05D7/081; G; G10; G10C; G10C3/00; G10C3/12
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
97 words
A key and mounting assembly comprising: a key lever provided with aperture means; and a mounting element having a first portion provided with pivot axis means, resilient latch means releasably latched to said aperture means fixedly locking the mounting element to the key lever to provide a pivotal support of the key lever, and cooperating projection and slot means on said lever and mounting element for preventing relative movement between said lever and mounting means when in locked association, other than by manipulation of said latch means with said first pOrtion fixedly positioned relative to said lever.
Claim 2
Dependent Claim
97 words
A key and mounting assembly comprising: a key lever provided with aperture means; and a mounting element having a first portion provided with pivot axis means, resilient latch means releasably latched to said aperture means fixedly locking the mounting element to the key lever to provide a pivotal support of the key lever, and cooperating projection and slot means on said lever and mounting element for preventing relative movement between said lever and mounting means when in locked association, other than by manipulation of said latch means with said first pOrtion fixedly positioned relative to said lever.
Claim 3
Dependent Claim
45 words
The key and mounting assembly of claim 1 wherein said mounting element comprises a body having a recess means providing for resilient movement of the latch means relative to the body for resilient displacement of the latch means during insertion thereof into said aperture means.
Claim 4
Dependent Claim
59 words
The key and mounting assembly of claim 1 wherein said aperture means comprises a pair of spaced apertures and said mounting element comprises a body having a pair of hooks and a recess means providing for resilient movement of at least one of the hooks relative to the body for resilient displacement thereof during insertion thereof into said apertures.
Claim 5
Dependent Claim
63 words
The key and mounting assembly of claim 1 wherein said aperture means comprises a pair of spaced apertures and said mounting element comprises a body having a pair of hooks and a pair of recesses one each adjacent said hooks providing for resilient movement of the hooks relative to the body for resilient displacement of the hooks during insertion thereof into said aperture.
Claim 6
Dependent Claim
56 words
The key and mounting assembly of claim 1 wherein said key lever includes spaced turned edge flanges and said mounting element includes a portion between said flanges having a thickness substantially equal to the spacing between the flanges for preventing movement of the mounting element relative to the key lever in the direction between the flanges.
Claim 7
Dependent Claim
57 words
The key and mounting assembly of claim 1 wherein said mounting means includes a fixed shoulder engaging one face of the key lever adjacent the aperture means and said latch means comprises a shoulder spaced from said fixed shoulder less than the thickness of said mounting means therebetween and engaging the opposite faces of the key lever.
Claim 8
Dependent Claim
89 words
A key and mounting assembly comprising: a key lever provided with aperture means; and a mounting element having a first portion provided with pivot axis means, and resilient latch means releasably latched to said aperture means fixedly locking the mounting element to the key lever to provide a pivotal support of the key lever, said lever comprising a U-section member having depending leg portions and an upper bight portion, said mounting member being received between said leg portions and said latch means being releasably secured to said bight portion.
Claim 9
Dependent Claim
89 words
A key and mounting assembly comprising: a key lever provided with aperture means; and a mounting element having a first portion provided with pivot axis means, and resilient latch means releasably latched to said aperture means fixedly locking the mounting element to the key lever to provide a pivotal support of the key lever, said lever comprising a U-section member having depending leg portions and an upper bight portion, said mounting member being received between said leg portions and said latch means being releasably secured to said bight portion.
Claim 10
Dependent Claim
43 words
The key and mounting assembly of claim 7 wherein said aperture means include a locating aperture and said mounting means includes a locating projection snugly received in said locating aperture to retain the mounting element against lateral movement relative to the key lever.
Claim 11
Dependent Claim
19 words
The key and mounting assembly of claim 7 further including means for adjustably tensioning a biasing spring connected thereto.
Claim 12
Dependent Claim
26 words
The key and mounting assembly of claim 1 wherein said latch means comprises a pair of outturned hooks engaging outer edge portions of said aperture means.
Claim 13
Dependent Claim
26 words
The key and mounting assembly of claim 1 wherein said latch means comprises a pair of inturned hooks engaging inner edge portions of said aperture means.
Claim 14
Dependent Claim
21 words
The key and mounting assembly of claim 1 wherein said latch means comprises hook means turned parallel to said pivot axis.
Claim 15
Dependent Claim
18 words
The key and mounting assembly of claim 7 wherein said aperture means is provided in said bight portion.
Claim 16
Dependent Claim
24 words
The key and mounting assembly of claim 13 wherein said latch means projects upwardly through said aperture means to terminate above said bight portion.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |