US3841835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for providing an information signal of sample introduction in apparatus for chemical analysis
Assignee: Yanagimoto Seisakusho Co Ltd
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Filing: 1972-02-23
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Granted: 1974-10-15
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Expires: 1992-02-23
Abstract
Abstract In apparatus for chemical analysis in which a sample to be analyzed is injected to a sample introduction section of said apparatus by means of a syringe having an injection needle which pierces an elastic plug covering a sample introduction opening formed in said sample introduction section, the improved means for providing an information signal of sample introduction comprises a movable member engageable with said syringe when a sample is injected by said syringe to said sample introduction section, a stationary member cooperating with said movable member, an electrical switch which is closed and opened in response to the relative movement between said movable member and said stationary member, and an electrical circuit including said electrical switch and means for providing an electrical signal for the sample introduction so that the sample introduction time is automatically detected and the information signal of sample introduction is transmitted to a recorder or computer.
Inventors
- 👤 Y Inagaki
- 👤 J Fujimoto
- 👤 K Kishimoto
- 👤 H Miyauchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:58
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/10; G01N35/1079; Y; Y10; Y10T; Y10T436/00; Y10T436/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
79 words
APPARATUS FOR PROVIDING A SIGNAL INDICATING INTRODUCTION OF A SAMPLE TO BE ANALYZED INTO A SAMPLE INTRODUCTION SECTION OF A SAMPLE ANALYZING SYSTEM BY A SYRING HAVING AN INJECTION NEEDLE WHICH PUNCTURES A PLUG COVERING THE OPENING OF THE SAMPLE INTRODUCTION SECTION, COMPRISING: A FIRST MEMBER POSITIONED ADJACENT THE SAMPLE INTRODUCTION OPENING FOR ENGAGEMENT AND MOVEMENT WITH THE SYRINGE WHEN A SAMPLE IS INJECTED INTO THE SAMPLE INTRODUCTION SECTION; A SECOND MEMBER ENGAGEABLE BY SAID FIRST MOVABLE MEMBER; AND
Claim 2
Dependent Claim
79 words
APPARATUS FOR PROVIDING A SIGNAL INDICATING INTRODUCTION OF A SAMPLE TO BE ANALYZED INTO A SAMPLE INTRODUCTION SECTION OF A SAMPLE ANALYZING SYSTEM BY A SYRING HAVING AN INJECTION NEEDLE WHICH PUNCTURES A PLUG COVERING THE OPENING OF THE SAMPLE INTRODUCTION SECTION, COMPRISING: A FIRST MEMBER POSITIONED ADJACENT THE SAMPLE INTRODUCTION OPENING FOR ENGAGEMENT AND MOVEMENT WITH THE SYRINGE WHEN A SAMPLE IS INJECTED INTO THE SAMPLE INTRODUCTION SECTION; A SECOND MEMBER ENGAGEABLE BY SAID FIRST MOVABLE MEMBER; AND
Claim 3
Dependent Claim
30 words
Apparatus as claimed in claim 1 wherein: said first and second members form a normally open switch which is closed upon engagement of said first member with said second member.
Claim 4
Dependent Claim
26 words
Apparatus as claimed in claim 2 wherein: said second member is a metal cap which overlies the plug and includes an aperture to receive the needle.
Claim 5
Dependent Claim
26 words
Apparatus as claimed in claim 3 wherein: said first member includes an aperture axially aligned with said aperture of said second member to receive the needle.
Claim 6
Dependent Claim
16 words
Apparatus as claimed in claim 4 wherein: said first member is supported by a flexible shank.
Claim 7
Dependent Claim
24 words
Apparatus as claimed in claim 1 wherein: said second member is a normally open microswitch which is closed upon engagement by said first member.
Claim 8
Dependent Claim
28 words
Apparatus as claimed in claim 6 wherein: said first and second members are mechanically coupled to a rotatable member for reorientation for use with another sample introduction section.
Claim 9
Dependent Claim
28 words
Apparatus as claimed in claim 2 wherein: said output signal producing means includes a flip-flop electrically coupled to said switch; and a recorder electrically coupled to said flip-flop.
Claim 10
Dependent Claim
28 words
Apparatus as claimed in claim 2 wherein: said output signal producing means includes a relay electrically coupled to said switch; and a recorder electrically coupled to said relay.
Claim 11
Dependent Claim
50 words
Apparatus as claimed in claim 1 including: detection means responsive to said output signal producing means for detecting sample information; data processing means; means for inhibiting the operation of said data processing means; and means for selectively connecting said data processing means to said detection means and said inhibiting means.
Claim 12
Dependent Claim
37 words
Apparatus as claimed in claim 10 including: a manually operable switch for maintaining an electrical connection between said output signal producing means and said data processing means upon disengagement of said first member with said second member.
Claim 13
Dependent Claim
28 words
Apparatus as claimed in claim 1 including: detection means responsive to said output signal producing means for detecting sample information; computer means electrically connected to said detection means.
References Cited (Backward Citations)
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US3535084A
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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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |