US3748907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid sampling device
Assignee: Milton Roy LLC
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Filing: 1971-06-07
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Granted: 1973-07-31
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Expires: 1991-06-07
Abstract
Abstract In automatic analysis apparatus having a feed mechanism which periodically presents a test tube at a fixed station to have its contents drawn into the apparatus for analysis, a rotating crank drives a pivoting arm in an arcuate path, the arm being connected to a flexible probe which thereby is alternately pushed into and withdrawn from each succeeding test tube. A guide member may be supplied on a second pivoting arm to assist the probe''s entry into the test tube. The interface between crank and arm may be provided with any of a variety of dwell cams to adjust the time during which the probe is in the test tube for withdrawal of the sample, or to adjust the time during which the probe is above the test tube station for movement of the tube conveyor or for cleaning of the probe.
Inventors
- 👤 O Sahmel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:46
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/10; G01N35/1095
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
126 words
In chemical analysis equipment, improved sampling mechanism including a flexible sampling probe, comprising: a. a base; b. a first arm pivotally mounted upon said base; c. a slide member constrained for sliding movement along said first arm, said side member having means for holding said flexible probe; d. a second arm pivotally connected to said base and being further pivotally connected to said slide member; e. crank means drivably connected to said second arm for reciprocating said second arm around its base pivot through a limited arc; said second arm driving said slide along said first arm for raising and lowering said first arm, and also for impelling said flexible probe through a guide member on said first arm into and out of sample container means.
Claim 2
Dependent Claim
126 words
In chemical analysis equipment, improved sampling mechanism including a flexible sampling probe, comprising: a. a base; b. a first arm pivotally mounted upon said base; c. a slide member constrained for sliding movement along said first arm, said side member having means for holding said flexible probe; d. a second arm pivotally connected to said base and being further pivotally connected to said slide member; e. crank means drivably connected to said second arm for reciprocating said second arm around its base pivot through a limited arc; said second arm driving said slide along said first arm for raising and lowering said first arm, and also for impelling said flexible probe through a guide member on said first arm into and out of sample container means.
Claim 3
Dependent Claim
137 words
A control for a flexible probe in an automatic sampling apparatus having a fixed station to which successive fluid receptacles are presented, comprising: a. a base; b. a power source connected to the base; c. crank means drivably connected to the power source; d. an arm pivotally connected to the base and drivably connected to the crank means, the arm being constrained to describe an arcuate excursion when activated by the crank means; e. a probe connected to the arm at an outward portion thereof; and f. a second arm pivotally connected to the base and mounting the guide member at an end opposite the pivotal connection of the second arm to the base, the second arm slidably connected to the first arm and rising and falling as a function of the position of the first arm.
Claim 4
Dependent Claim
137 words
A control for a flexible probe in an automatic sampling apparatus having a fixed station to which successive fluid receptacles are presented, comprising: a. a base; b. a power source connected to the base; c. crank means drivably connected to the power source; d. an arm pivotally connected to the base and drivably connected to the crank means, the arm being constrained to describe an arcuate excursion when activated by the crank means; e. a probe connected to the arm at an outward portion thereof; and f. a second arm pivotally connected to the base and mounting the guide member at an end opposite the pivotal connection of the second arm to the base, the second arm slidably connected to the first arm and rising and falling as a function of the position of the first arm.
Claim 5
Dependent Claim
36 words
The control of claim 2 further comprising a dwell cam connecting the crank means and the arm; a guide member disposed proximate to the fixed station and to an end of the excursion of the arm.
Claim 6
Dependent Claim
132 words
In chemical analysis equipment, an improved sampling mechanism including a flexible sampling probe comprising: a. a base; b. a power source connected to the base; c. crank means drivably connected to the power source; d. an arm pivotally connected to the base and drivably to the crank means, the arm being constrained to describe an arcuate excursion when activated by the crank means and having a terminal end; e. a fixed, arced guide means; f. the probe connected proximate the terminal end of the arm and having a portion circumscribed by the guide means, the connection of the probe and arm spaced from and outside the area defined by the guide means; and g. the probe movable through the guide means and in and out of a succession of presented fluid receptacles.
Claim 7
Dependent Claim
132 words
In chemical analysis equipment, an improved sampling mechanism including a flexible sampling probe comprising: a. a base; b. a power source connected to the base; c. crank means drivably connected to the power source; d. an arm pivotally connected to the base and drivably to the crank means, the arm being constrained to describe an arcuate excursion when activated by the crank means and having a terminal end; e. a fixed, arced guide means; f. the probe connected proximate the terminal end of the arm and having a portion circumscribed by the guide means, the connection of the probe and arm spaced from and outside the area defined by the guide means; and g. the probe movable through the guide means and in and out of a succession of presented fluid receptacles.
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |