US3663816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sample-conveying mechanism for scintillation counting
Assignee: Beckman Coulter Inc
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Filing: 1966-05-20
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Granted: 1972-05-16
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Expires: 1986-05-20
Abstract
Abstract A conveying mechanism for transporting a sample vial from an external loading platform into a light-tight counting chamber of a scintillation counter. The invention comprises a wall defining a counting chamber having an elongated passage, the wall having a shoulder, a sample platform, having a shaft coupled thereto to position the platform through the passage and into the counting chamber, and a sleeve movable about said shaft for engaging the shoulder to prevent external light from entering the counting chamber.
Inventors
- 👤 Walter O Scherzer
- 👤 Edward W Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:51
CPC Classifications
G; G01; G01T; G01T7/00; G01T7/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
175 words
An apparatus for scintillation counting and analogous purposes, comprising wall means defining a counting chamber and an elongated passage connecting said chamber with the exterior, said wall means having a shoulder portion between the counting chamber and the exterior, the sample platform movable through a portion of said passage and into said counting chamber, the shaft coupled to said platform for positioning said platform within said passage and said counting chamber, a sleeve movable about said shaft, said sleeve having light sealing means for engaging said shoulder portion of said wall means, a yoke having a slot therein, said yoke coupled to said shaft and movable therewith, an arm having a guide slot therein and a pin on one end thereof, said pin positioned within the slot of said yoke, means for rotating said arm to position said platform within said wall means, said rotating means including a first rotatable cam having pin and retainer means slidably positioned within the slot of said arm, and resilient biasing means for forcing said arm toward said yoke.
Claim 2
Independent Claim
175 words
An apparatus for scintillation counting and analogous purposes, comprising wall means defining a counting chamber and an elongated passage connecting said chamber with the exterior, said wall means having a shoulder portion between the counting chamber and the exterior, the sample platform movable through a portion of said passage and into said counting chamber, the shaft coupled to said platform for positioning said platform within said passage and said counting chamber, a sleeve movable about said shaft, said sleeve having light sealing means for engaging said shoulder portion of said wall means, a yoke having a slot therein, said yoke coupled to said shaft and movable therewith, an arm having a guide slot therein and a pin on one end thereof, said pin positioned within the slot of said yoke, means for rotating said arm to position said platform within said wall means, said rotating means including a first rotatable cam having pin and retainer means slidably positioned within the slot of said arm, and resilient biasing means for forcing said arm toward said yoke.
Claim 3
Dependent Claim
44 words
An apparatus in accordance with claim 1, wherein a second cam is mounted on said first cam and is rotatable therewith, and a shutter for closing off said counting chamber from the exterior, said shutter actuated responsive to the profile of said second cam.
Claim 4
Dependent Claim
25 words
An apparatus in accordance with claim 1, including one or more stopping means for independently engaging the yoke to limit the movement of said shaft.
Claim 5
Dependent Claim
24 words
An apparatus in accordance with claim 3, wherein at least one of said stopping means is adjustable toward and away from said counting chamber.
Claim 6
Dependent Claim
43 words
An apparatus in accordance with claim 1, including a motor for rotating the first cam, said motor responsive to the profile of said first cam such that the platform is stopped in the counting chamber and in position to receive a sample vial.
Claim 7
Independent Claim
156 words
An apparatus for scintillation counting and analogous purposes, comprising wall means defining a counting chamber and an elongated passage connecting said chamber with the exterior, a sample platform movable through a portion of said passage and into said counting chamber, first and second cams coupled together, said cams mounted for rotation about an axis, a shaft coupled to said platform, a yoke having a slot, said shaft coupled to said yoke, an arm having a slot and also having a pin on one end thereof movable in said slot of said yoke, a plurality of pins supported by said cams, said pluralIty of pins positioned to move within the slot of said arm, said cams having cut-outs over a portion of their circular surface, a shutter supported in said wall means for sealing said counting chamber from the exterior, and means responsive to the cut-outs on said cams for stopping the platform and actuating the shutter.
Claim 8
Independent Claim
156 words
An apparatus for scintillation counting and analogous purposes, comprising wall means defining a counting chamber and an elongated passage connecting said chamber with the exterior, a sample platform movable through a portion of said passage and into said counting chamber, first and second cams coupled together, said cams mounted for rotation about an axis, a shaft coupled to said platform, a yoke having a slot, said shaft coupled to said yoke, an arm having a slot and also having a pin on one end thereof movable in said slot of said yoke, a plurality of pins supported by said cams, said pluralIty of pins positioned to move within the slot of said arm, said cams having cut-outs over a portion of their circular surface, a shutter supported in said wall means for sealing said counting chamber from the exterior, and means responsive to the cut-outs on said cams for stopping the platform and actuating the shutter.
References Cited (Backward Citations)
US3163756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |