US3127329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for sampling airborne micro-organisms
Assignee: —
•
Filing: —
•
Granted: 1964-03-31
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Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:12
CPC Classifications
C; C12; C12M; C12M27/00; C12M27/10; C12M33/00; C12M33/04; C12M41/00; C12M41/30; C12M41/36
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
68 words
AN APPARATUS FOR SEPARATING AND COLLECTING MICROSCOPIC, AIRBORNE PARTICLES WHICH COMPRISES A DRUM, A LAYER ON THE CYLINDRICAL SURFACE OF SAID DRUM CAPABLE OF RETAINING MICROSCOPIC PARTICLES IMPACTED THEREAGAINST, NOZZLE MEANS POSITIONED ADJACENT TO THE CYLINDRICAL SURFACE OF SAID DRUM FOR DIRECTING A JET OF AIR THEREAGAINST, AND MEANS FOR SIMULTANEOUSLY CAUSING RELATIVE ROTATIONAL AND TRANSLATIONAL MOVEMENT BETWEEN SAID CYLINDRICAL SURFACE OF THE DRUM AND SAID NOZZLE MEANS.
Claim 2
Independent Claim
68 words
AN APPARATUS FOR SEPARATING AND COLLECTING MICROSCOPIC, AIRBORNE PARTICLES WHICH COMPRISES A DRUM, A LAYER ON THE CYLINDRICAL SURFACE OF SAID DRUM CAPABLE OF RETAINING MICROSCOPIC PARTICLES IMPACTED THEREAGAINST, NOZZLE MEANS POSITIONED ADJACENT TO THE CYLINDRICAL SURFACE OF SAID DRUM FOR DIRECTING A JET OF AIR THEREAGAINST, AND MEANS FOR SIMULTANEOUSLY CAUSING RELATIVE ROTATIONAL AND TRANSLATIONAL MOVEMENT BETWEEN SAID CYLINDRICAL SURFACE OF THE DRUM AND SAID NOZZLE MEANS.
Claim 3
Independent Claim
111 words
THE METHOD OF SAMPLING AIR TO DETERMINE THE CONCENTRATION OF VIABLE MICRO-ORGANISMS CARRIED THEREBY WHICH COMPRISES DIRECTING A JET OF AIR CARRYING SUCH MICRO-ORGANISMS AGAINST A CYLINDRICAL NUTRIENT SURFACE WHICH WILL RETAIN SUCH MICRO-ORGANISMS ON IMPACTION AND SIMULTANEOUSLY MOVING SUCH SURFACE ROTATIONALLY PAST SAID JET AND TRANSLATIONALLY WITH RESPECT THERETO, WHEREBY MICRO-ORGANISMS CARRIED BY THE AIR JET ARE DEPOSITED ON SAID CYLINDRICAL SURFACE IN A HELICAL LINE EXTENDING THEREAROUND, AND INCUBATING SAID DEPOSITED MICRO-ORGANISMS TO CAUSE THEM TO GROW INTO VISIBLE, COUNTABLE MICROBIAL COLONIES, THE NUMBER AND POSITION OF WHICH WITH RESPECT TO SAID LINE, REPRESENT THE CONCENTRATION OF MICRO-ORGANISMS IN SAID JET OF AIR AND THE TIME WHEN COLLECTED, RESPECTIVELY.
Claim 4
Independent Claim
111 words
THE METHOD OF SAMPLING AIR TO DETERMINE THE CONCENTRATION OF VIABLE MICRO-ORGANISMS CARRIED THEREBY WHICH COMPRISES DIRECTING A JET OF AIR CARRYING SUCH MICRO-ORGANISMS AGAINST A CYLINDRICAL NUTRIENT SURFACE WHICH WILL RETAIN SUCH MICRO-ORGANISMS ON IMPACTION AND SIMULTANEOUSLY MOVING SUCH SURFACE ROTATIONALLY PAST SAID JET AND TRANSLATIONALLY WITH RESPECT THERETO, WHEREBY MICRO-ORGANISMS CARRIED BY THE AIR JET ARE DEPOSITED ON SAID CYLINDRICAL SURFACE IN A HELICAL LINE EXTENDING THEREAROUND, AND INCUBATING SAID DEPOSITED MICRO-ORGANISMS TO CAUSE THEM TO GROW INTO VISIBLE, COUNTABLE MICROBIAL COLONIES, THE NUMBER AND POSITION OF WHICH WITH RESPECT TO SAID LINE, REPRESENT THE CONCENTRATION OF MICRO-ORGANISMS IN SAID JET OF AIR AND THE TIME WHEN COLLECTED, RESPECTIVELY.
References Cited (Backward Citations)
US3001914A
Cited
US2894877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |