US4037179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical filter device
Assignee: Seiko Instruments Inc
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Filing: 1975-07-11
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Granted: 1977-07-19
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Expires: 1995-07-11
Abstract
Abstract A mechanical filter device comprises a casing having housed therein a U-shaped tuning fork. A damper extends from the casing between adjoining vibratable tines of the tuning fork to effectively dampen abnormal vibrations of the tines caused by external shocks or impacts being applied to the casing. The damper is formed integrally with the casing as a one-piece structure from synthetic resin.
Inventors
- 👤 Toshio Terayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:34
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/02; G10K11/04; H; H03; H03H; H03H9/00; H03H9/02; H03H9/05; H03H9/10; H03H9/1007; H03H9/1014; H03H9/1021; H03H9/24; H03H9/46; H03H9/48
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
37 words
A mechanical filter device comprising: a casing having mounted therein a U-shaped tuning fork having vibratable leg portions, a damper positioned between said leg portions, said damper having a comb shape and being connected to said casing.
Claim 2
Dependent Claim
37 words
A mechanical filter device comprising: a casing having mounted therein a U-shaped tuning fork having vibratable leg portions, a damper positioned between said leg portions, said damper having a comb shape and being connected to said casing.
Claim 3
Dependent Claim
37 words
A mechanical filter device comprising: a casing having mounted therein a U-shaped tuning fork having vibratable leg portions, a damper positioned between said leg portions, said damper having a bar shape and being connected to said casing.
Claim 4
Dependent Claim
37 words
A mechanical filter device comprising: a casing having mounted therein a U-shaped tuning fork having vibratable leg portions, a damper positioned between said leg portions, said damper having a bar shape and being connected to said casing.
Claim 5
Dependent Claim
21 words
A mechanical filter device as claimed in claim 2 wherein said damper and said casing comprise a one piece integral body.
Claim 6
Dependent Claim
36 words
A mechanical filter device comprising: a casing having mounted therein a U-shaped tuning fork having vibratable leg portions, a damper positioned between said leg portions, said damper having a E-shape and being connected to said casing.
Claim 7
Dependent Claim
36 words
A mechanical filter device comprising: a casing having mounted therein a U-shaped tuning fork having vibratable leg portions, a damper positioned between said leg portions, said damper having a E-shape and being connected to said casing.
Claim 8
Dependent Claim
21 words
A mechanical filter device as claimed in claim 4, wherein said damper and said casing comprise a one piece integral body.
Claim 9
Dependent Claim
59 words
A mechanical filter device comprising: a casing; a tuning fork mounted to undergo vibration within said casing and having a set of vibratable leg portions; and dampening means connected to said casing and extending between adjoining ones of said vibratable leg portions so as to effectively dampen abnormal vibration of said leg portions caused by external shock or impact.
Claim 10
Dependent Claim
59 words
A mechanical filter device comprising: a casing; a tuning fork mounted to undergo vibration within said casing and having a set of vibratable leg portions; and dampening means connected to said casing and extending between adjoining ones of said vibratable leg portions so as to effectively dampen abnormal vibration of said leg portions caused by external shock or impact.
Claim 11
Dependent Claim
19 words
A mechanical filter device according to claim 6; wherein said casing and dampening means comprise a one-piece integral body.
Claim 12
Dependent Claim
18 words
A mechanical filter device according to claim 7; wherein said one-piece integral body is composed of synthetic resin.
Claim 13
Dependent Claim
27 words
A mechanical filter device according to claim 6; wherein said dampening means comprises a platelike member connected to one wall of said casing and extending outwardly therefrom.
Claim 14
Dependent Claim
24 words
A mechanical filter device according to claim 9; wherein said platelike member and said casing comprise an integral one-piece body composed of synthetic resin.
Claim 15
Dependent Claim
78 words
A mechanical filter device comprising: a casing; a tuning fork mounted to undergo vibration within said casing and having a set of vibratable leg portions; and dampening means connected to said casing and extending between adjoining ones of said vibratable leg portions and configured so as to not make contact with said leg portions during normal vibration thereof and to make contact with and effectively dampen abnormal vibration of said leg portions caused by external shock or impact.
Claim 16
Dependent Claim
78 words
A mechanical filter device comprising: a casing; a tuning fork mounted to undergo vibration within said casing and having a set of vibratable leg portions; and dampening means connected to said casing and extending between adjoining ones of said vibratable leg portions and configured so as to not make contact with said leg portions during normal vibration thereof and to make contact with and effectively dampen abnormal vibration of said leg portions caused by external shock or impact.
Claim 17
Dependent Claim
19 words
A mechanical filter device according to claim 11 wherein said casing and dampening means comprise a one-piece integral body.
Claim 18
Dependent Claim
18 words
A mechanical filter device according to claim 12; wherein said one-piece integral body is composed of synthetic resin.
Claim 19
Dependent Claim
27 words
A mechanical filter device according to claim 11; wherein said dampening means comprises a platelike member connected to one wall of said casing and extending outwardly therefrom.
Claim 20
Dependent Claim
24 words
A mechanical filter device according to claim 14; wherein said platelike member and said casing comprise an integral one-piece body composed of synthetic resin.
References Cited (Backward Citations)
US3243736A
Cited
US3513415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |