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US4568520A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for the automated production of a series of samples for the analysis of mixtures

Assignee: ISMATEC SA A CORP OF SWITZERLAND
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Filing: 1983-03-24
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Granted: 1986-02-04
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Expires: 2003-03-24
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Abstract

Abstract Apparatus for manufacturing a series of samples of a mixture comprises a continuous filter strip on a roll and means for advancing the filter strip along a predetermined guide path. A suction head is located below the guide path and a bell member above the guide path at a point opposite to that of the suction head. The bell member is capable of being raised and lowered so that a portion of the filter strip is sealed between the bell member and suction head when the bell member is in the lowered position. Feeding means are provided through which samples of the mixture are conveyed from a sample vessel, through the bell member and onto the filter strip when the bell member is in the lowered position. A stamping device is located downstream the bell member whereby portions of the filter strip supporting the sample are stamped out in disc form. The disc is received within a receiving vessel. Reagent fluid supplied to the disc through a needle. The needle also conveys the disc from the stamping means to a sample receiving vessel.

Inventors

  • 👤 Fritz Ackermann
  • 👤 Anton Bill

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 18:41
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/40; G01N1/4077; G01N1/286; G01N2001/2873; G01N2001/288; Y; Y10; Y10T; Y10T436/00; Y10T436/11; Y10T436/110833; Y10T436/25; Y10T436/25375; Y10T436/2575

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 246 words
Apparatus for the manufacture of a series of samples of a mixture, the apparatus comprising: a guide path; a continuous filter strip; means for intermittently advancing the filter strip along the guide path; a suction head located below the guide path at a first position along said guide path; a movable bell member located above the guide path at said first position and opposite the suction head and capable of being raised and lowered to an upper and lower position so that a portion of the filter strip is sealed between the moveable bell member and the suction head when the moveable bell member is in the lower position; feeding means for conveying a sample of a mixture by suction pressure to the suction head through the moveable bell member to deposit the sample onto the sealed portion of the filter strip when the moveable bell member is in the lower position; stamping means located above the guide path at a second position along said guide path downstream from said first position for stamping out the portion of the filter strip on which the sample has been deposited; and sample receiving means located below the guide path at said second position and opposite said stamping means for receiving the stamped out portion of the filter strip, said stamping means further including means for conveying the stamped out portion of the fulter strip to the sample receiving means and supplying reagent fluid to the sample receiving means.
Claim 2
Dependent Claim 246 words
Apparatus for the manufacture of a series of samples of a mixture, the apparatus comprising: a guide path; a continuous filter strip; means for intermittently advancing the filter strip along the guide path; a suction head located below the guide path at a first position along said guide path; a movable bell member located above the guide path at said first position and opposite the suction head and capable of being raised and lowered to an upper and lower position so that a portion of the filter strip is sealed between the moveable bell member and the suction head when the moveable bell member is in the lower position; feeding means for conveying a sample of a mixture by suction pressure to the suction head through the moveable bell member to deposit the sample onto the sealed portion of the filter strip when the moveable bell member is in the lower position; stamping means located above the guide path at a second position along said guide path downstream from said first position for stamping out the portion of the filter strip on which the sample has been deposited; and sample receiving means located below the guide path at said second position and opposite said stamping means for receiving the stamped out portion of the filter strip, said stamping means further including means for conveying the stamped out portion of the fulter strip to the sample receiving means and supplying reagent fluid to the sample receiving means.
Claim 3
Dependent Claim 23 words
Apparatus as claimed in claim 1 wherein the stamping means is such that it stamps out disc shaped portions from the filter strip.
Claim 4
Dependent Claim 15 words
Apparatus as claimed in claim 1 wherein the sample receiving means comprises a receiving vessel.
Claim 5
Dependent Claim 45 words
Apparatus as claimed in claim 1 wherein the means for conveying the stamped out portion of the filter strip to the sample receiving means and supplying reagent fluid to the sample receiving means comprises a stop needle operatively connected to a reagent fluid supply line.
Claim 6
Dependent Claim 34 words
Apparatus as claimed in claim 4 wherein one end of the stop needle is widened so as to contact the stamped out portion of the filter strip as near to its edge as possible.

References Cited (Backward Citations)

US3244287A Cited
US3554700A Cited
US3940250A Cited
DE2241646A1 Cited
US3923463A Cited
DE2324056A1 Cited
US4167875A Cited
US4341735A Cited
US4395493A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-02-03 1989-08-05 1990-02-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-02-03 1993-08-05 1994-02-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-02-03 1997-08-05 1998-02-04 $7700.00 Window Closed / Lapsed

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