US4823461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing fluidic angular rate sensor
Assignee: Honda Motor Co Ltd
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Filing: 1988-05-24
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Granted: 1989-04-25
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Expires: 2008-05-24
Abstract
Abstract A method of manufacturing a fluidic angular rate sensor of the type wherein fine wires, such as tungsten wires, are mounted in tension over the heads of two pairs of spaced apart metal supports which are mounted on a ceramic disc having fluid passage apertures therein, comprising plating gold on the wires; fixedly mounting the wires between the spread apart metal supports by means of thermocompression bonding or the like; and heating the mounted gold plated wires in a predetermined atmosphere for removing the plated gold from the wires and to recrystallize the wires.
Inventors
- 👤 Fumitaka Takahashi
- 👤 Kunio Okazaki
- 👤 Masaru Shiraishi
- 👤 Masayuki Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:43
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/58; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49085; Y10T29/49101
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
109 words
A method of manufacturing a fluidic angular rate sensor of the type wherein fine wires are mounted in tension over the ends of two pairs of of spaced apart metal supports which are mounted on a ceramic disc having fluid passage apertures therein, comprising the steps of: plating a gold layer on said wires; fixedly mounting said gold plated wires to said spaced apart metal supports such that said gold plated wires are in tension between respective pairs of said metal supports; and heating said mounted gold plated wires in a predetermined atmosphere for removing said plated gold from said wires and to cause said wires to be crystallized.
Claim 2
Independent Claim
109 words
A method of manufacturing a fluidic angular rate sensor of the type wherein fine wires are mounted in tension over the ends of two pairs of of spaced apart metal supports which are mounted on a ceramic disc having fluid passage apertures therein, comprising the steps of: plating a gold layer on said wires; fixedly mounting said gold plated wires to said spaced apart metal supports such that said gold plated wires are in tension between respective pairs of said metal supports; and heating said mounted gold plated wires in a predetermined atmosphere for removing said plated gold from said wires and to cause said wires to be crystallized.
Claim 3
Dependent Claim
21 words
The method of claim 1, wherein said heating step comprises passing electric power through said wires to internally heat said wires.
Claim 4
Dependent Claim
12 words
The method of claim 2, wherein said predetermined atmosphere is a vacuum.
Claim 5
Dependent Claim
21 words
The method of claim 2, wherein said predetermined atmosphere comprises an inert gas at a pressure no greater than atmospheric pressure.
Claim 6
Dependent Claim
21 words
The method of claim 2, wherein said predetermined atmosphere comprises a reductive gas at a pressure no greater than atmospheric pressure.
Claim 7
Dependent Claim
26 words
The method of claim 2, wherein said predetermined atmosphere comprises a gas mixture of inert gas and reductive gas at a pressure no greater than atmospheric.
Claim 8
Dependent Claim
21 words
The method of claim 1, wherein said heating step comprises radiating laser beams on said wires to externally heat said wires.
Claim 9
Dependent Claim
12 words
The method of claim 7, wherein said predetermined atmosphere is a vacuum.
Claim 10
Dependent Claim
21 words
The method of claim 7, wherein said predetermined atmosphere comprises an inert gas at a pressure no greater than atmospheric pressure.
Claim 11
Dependent Claim
21 words
The method of claim 7, wherein said predetermined atmosphere comprises a reductive gas at a pressure no greater than atmospheric pressure.
Claim 12
Dependent Claim
26 words
The method of claim 7, wherein said predetermined atmosphere comprises a gas mixture of inert gas and reductive gas at a pressure no greater than atmospheric.
Claim 13
Dependent Claim
12 words
The method of claim 1, wherein said predetermined atmosphere is a vacuum.
Claim 14
Dependent Claim
21 words
The method of claim 1, wherein said predetermined atmosphere comprises an inert gas at a pressure no greater than atmospheric pressure.
Claim 15
Dependent Claim
21 words
The method of claim 1, wherein said predetermined atmosphere comprises a reductive gas at a pressure no greater than atmospheric pressure.
Claim 16
Dependent Claim
26 words
The method of claim 1, wherein said predetermined atmosphere comprises a gas mixture of inert gas and reductive gas at a pressure no greater than atmospheric.
Claim 17
Dependent Claim
21 words
The method of claim 1, wherein said mounting step comprises bonding said wires to said respective metal supports by thermocompression bonding.
Claim 18
Dependent Claim
62 words
The method of claim 1, wherein said sensor comprises two pairs of metal supports, the supports of each pair being spaced apart from each other, and said gold plated wires comprise two gold plated wires, each wire being mounted in tension between the spaced apart supports of a respective pair of supports, said wires being arranged substantially in parallel with each other.
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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) | 1992-04-24 | 1992-10-24 | 1993-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-24 | 1996-10-24 | 1997-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-24 | 2000-10-24 | 2001-04-25 | $7700.00 | Window Closed / Lapsed |