Patent US3600543A successfully refreshed from Google Patents.
US3600543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keying switch assembly
Assignee: Nippon Gakki Co Ltd
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Filing: 1969-11-19
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Granted: 1971-08-17
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Expires: 1989-11-19
Abstract
Abstract A keying switch assembly operable by means of a key includes a stationary contact member, an elastically bendable contact member having a fixed end and a movable end which is selectively operable to contact the stationary contact, and a flexible shock absorber attached to the bendable contact member for reducing shock noises. An actuator strikes against the shock absorber upon operation of the key so as to cause the bendable contact member to be silently bent, so that the movable end thereof contacts the stationary contact member.
Inventors
- 👤 Seiji Nakada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:21
CPC Classifications
H; H01; H01H; H01H21/00; H01H21/02; H01H21/18; H01H21/22; G; G10; G10H; G10H1/00; G10H1/32; G10H1/34; G10H1/344; H01H3/00; H01H3/60; G10H2220/00; G10H2220/155; G10H2220/265; G10H2220/275
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
110 words
A keying switch assembly operated by a key comprising: a stationary contact member (7); a leaf-shaped elastically bendable contact member (9), one end thereof being fixed and the other end thereof being movable, said elastically bendable contact member (9) being selectively movable to contact with said stationary contact member (7); a shock absorbing member (13) of flexible material attached to said elastically bendable contact member (9) at a position thereof intermediate said fixed and movable ends; and an actuator (10, 11) actuated by said key (1) and striking against said shock absorbing member (13) to bend said elastically bendable contact member (9) into contact with said stationary contact member (7).
Claim 2
Dependent Claim
110 words
A keying switch assembly operated by a key comprising: a stationary contact member (7); a leaf-shaped elastically bendable contact member (9), one end thereof being fixed and the other end thereof being movable, said elastically bendable contact member (9) being selectively movable to contact with said stationary contact member (7); a shock absorbing member (13) of flexible material attached to said elastically bendable contact member (9) at a position thereof intermediate said fixed and movable ends; and an actuator (10, 11) actuated by said key (1) and striking against said shock absorbing member (13) to bend said elastically bendable contact member (9) into contact with said stationary contact member (7).
Claim 3
Dependent Claim
19 words
The keying switch assembly claimed in claim 1 in which said shock absorbing member (13) is made of rubber.
Claim 4
Dependent Claim
50 words
The keying switch assembly claimed in claim 1 in which said shock absorbing member (13) has a dovetail groove (13) extending in the longitudinal direction of said elastically bendable contact member (9), and said elastically bendable contact member has a dovetail cross section which is fitted into said dovetail groove.
Claim 5
Dependent Claim
36 words
The keying switch assembly claimed in claim 1 in which said shock absorbing member (13) has a plurality of parallel spaced grooves (14) formed at the lower portion thereof and extending in the transverse direction thereof.
Claim 6
Dependent Claim
35 words
The keying switch assembly claimed in claim 3 in which said shock absorbing member (13) has a plurality of parallel-spaced grooves (14) formed at the lower portion thereof and extending in the transverse direction thereof.
Claim 7
Dependent Claim
26 words
The keying switch assembly claimed in claim 1 in which said shock absorbing member (13) has a protrusion (16) integrally formed on the upper portion thereof.
Claim 8
Dependent Claim
48 words
The keying switch assembly claimed in claim 1 wherein said stationary contact member (7) extends transversely of said elastically bendable contact member (9), and said shock absorbing member (13) is disposed between said stationary contact member (7) and said fixed end of said elastically bendable contact member (9).
Claim 9
Dependent Claim
40 words
The keying switch assembly claimed in claim 1 wherein said actuator (10,11) comprises an elastically bendable support member (10) having one end fixed, and an actuator member (11) connected to the other end of said elastically bendable support member (10).
Claim 10
Dependent Claim
22 words
The keying switch assembly claimed in claim 1 wherein said shock absorbing member (13) is generally in the form of a plate.
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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |