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US4014658A Expired / Lapsed US ⏱️ 0.0 years remaining

Solvent vapor venting dust cover unit for fraction collector turntable

Assignee: Abbott Laboratories
•
Filing: 1975-04-28
•
Granted: 1977-03-29
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Expires: 1995-04-28
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Abstract

Abstract A solvent vapor venting dust cover unit which automatically vents all volatile solvent vapors arising during the fraction collection procedure.

Inventors

  • 👤 David Lloyd Arendsen
  • 👤 Carl William Nordeen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 11:48
CPC Classifications
B; B01; B01L; B01L1/00

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 194 words
A solvent vapor venting dust cover unit for a fraction collector turntable comprising: enclosure means housing said fraction collector turntable; said fraction collector turntable having a base plate; said enclosure means supported on said base plate; removable cover means positioned over and in a abutting relationship with said enclosure means, and wherein said removable cover means is split to provide two separate and distinct sections, each of said sections having a rolled edge and an offset lap joint; said removable cover means having an opening therein; said opening providing means for a solvent to be dropped into test tubes within said fraction collector turntable; said enclosure means having spaced apart air intake means and air exhaust means; said air exhaust means including an outwardly extending hose extending from said air exhaust means and said hose being connectable to an adjacent hood whereby air flow is drawn out of said unit through said air exhaust means through a ventilation system within said hood; and said air intake means and said air exhaust means located opposite each other in said enclosure whereby any solvent vapors within said enclosure means are drawn out of said enclosure means.
Claim 2
Dependent Claim 194 words
A solvent vapor venting dust cover unit for a fraction collector turntable comprising: enclosure means housing said fraction collector turntable; said fraction collector turntable having a base plate; said enclosure means supported on said base plate; removable cover means positioned over and in a abutting relationship with said enclosure means, and wherein said removable cover means is split to provide two separate and distinct sections, each of said sections having a rolled edge and an offset lap joint; said removable cover means having an opening therein; said opening providing means for a solvent to be dropped into test tubes within said fraction collector turntable; said enclosure means having spaced apart air intake means and air exhaust means; said air exhaust means including an outwardly extending hose extending from said air exhaust means and said hose being connectable to an adjacent hood whereby air flow is drawn out of said unit through said air exhaust means through a ventilation system within said hood; and said air intake means and said air exhaust means located opposite each other in said enclosure whereby any solvent vapors within said enclosure means are drawn out of said enclosure means.
Claim 3
Dependent Claim 25 words
The solvent vapor venting dust cover unit of claim 1 wherein: said sections of said removable cover means are freely movable about said enclosure means.
Claim 4
Dependent Claim 36 words
The solvent vapor venting dust cover unit of claim 1 wherein: said enclosure means includes observation means; and said observation means comprise Plexiglas windows whereby samples in test tubes in said fraction collector may be observed.

References Cited (Backward Citations)

US234879A Cited
US2604249A Cited
US2604248A Cited
US2654522A Cited
US3713785A Cited
US3760446A Cited
US3880061A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-03-28 1980-09-27 1981-03-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-03-28 1984-09-27 1985-03-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-03-28 1988-09-27 1989-03-29 $7700.00 Window Closed / Lapsed

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