Patent US4413527A successfully refreshed from Google Patents.
US4413527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor pressure sensor
Assignee: Denso Corp
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Filing: 1982-04-06
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Granted: 1983-11-08
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Expires: 2002-04-06
Abstract
Abstract A semiconductor pressure sensor has an encased sensor unit, and a metal casing having a pressure introduction pipe and housing therein the sensor unit. The metal casing has therein synthetic resin poured by potting to fix the sensor unit securely in the metal casing. Through-type capacitors are affixed to the metal casing. The sensor unit produces an electrical signal transmitted out through the through-type capacitors and over lead wires connected to the through-type capacitors. With this arrangement, the semiconductor pressure sensor is protected against electromagnetic interference (EMI), and moisture is prevented from entering the metal casing.
Inventors
- 👤 Junzi Sugiura
- 👤 Hiroshi Okada
- 👤 Michitaka Hayashi
- 👤 Toru Yamazaki
- 👤 Hiroshi Sugimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:38
CPC Classifications
G; G01; G01L; G01L19/00; G01L19/14; G01L19/142; G01L19/143; G01L19/0061; G01L19/0084; G01L19/06; G01L19/069; G01L19/147; Y; Y10; Y10S; Y10S73/00; Y10S73/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
101 words
A semiconductor sensor unit comprising: a casing including a pressure introduction pipe and an electrically conductive member; a pressure sensor unit enclosed by said electrically conductive member in said casing for detecting a pressure introduced through said pressure introduction pipe; a circuit unit enclosed by said electrically conductive member in said casing for amplifying an output signal delivered from said pressure sensor unit; and, at least one through-type capacitor mounted on said casing and electrically connected to said electrically conductive member, the arrangement being that a signal from said circuit unit is delivered out of said casing through said through-type capacitor.
Claim 2
Dependent Claim
101 words
A semiconductor sensor unit comprising: a casing including a pressure introduction pipe and an electrically conductive member; a pressure sensor unit enclosed by said electrically conductive member in said casing for detecting a pressure introduced through said pressure introduction pipe; a circuit unit enclosed by said electrically conductive member in said casing for amplifying an output signal delivered from said pressure sensor unit; and, at least one through-type capacitor mounted on said casing and electrically connected to said electrically conductive member, the arrangement being that a signal from said circuit unit is delivered out of said casing through said through-type capacitor.
Claim 3
Dependent Claim
46 words
A semiconductor sensor unit according to claim 1, wherein said pressure sensor unit includes a pressure introduction tube aligned for communication with said pressure introduction pipe, there being an 0-ring mounted in said casing and hermetically sealing said pressure introduction tube at said pressure introduction pipe.
Claim 4
Dependent Claim
34 words
A semiconductor sensor unit according to claim 1, wherein said pressure introduction pipe has a length of 15 mm or more and a bore diameter in the range of 1.5 mm to 2.5 mm.
Claim 5
Dependent Claim
22 words
A semiconductor sensor unit according to claim 1 or 2, including a mass of synthetic resin filled in said casing by potting.
Claim 6
Dependent Claim
35 words
A semiconductor sensor unit according to claim 1, including at least one lead wire electrically connected to said through-type capacitors at a junction, and a mass of synthetic resin deposited around said junction by potting.
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) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |