US3628015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scanning mechanism for use in an x-ray spectrometer
Assignee: NAT RES DEV
•
Filing: 1968-11-26
•
Granted: 1971-12-14
•
Expires: 1988-11-26
Abstract
Abstract In a spectrometer incorporating a radiation detector which is movable so as to follow the focal curve of a dispersive element such as a curved grating or crystal, the movement of the detector is brought about by appropriately coordinating the operation of two mechanisms which respectively drive the detector radially and angularly relative to the dispersive element.
Inventors
- 👤 Albert Franks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:51
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/20; G01N23/207; G01N23/2076
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
126 words
In a spectrometer for use with radiation dispersive elements having a focusing characteristic, a scanning arrangement comprising: a. a rectilinear track mounted for rotation about an axis perpendicular to the length of the track; b. a radiation detector mounted for movement along the track and disposed so that throughout said movement it will be responsive to radiation received from a given point on said axis; c. a first drive mechanism operable to drive the detector along the track independently of any rotation of the track about said axis; d. a second drive mechanism operable to rotate the track about said axis; and e. means for conjointly operating the two drive mechanisms so as to cause the detector to traverse a predetermined path relative to said axis.
Claim 2
Dependent Claim
126 words
In a spectrometer for use with radiation dispersive elements having a focusing characteristic, a scanning arrangement comprising: a. a rectilinear track mounted for rotation about an axis perpendicular to the length of the track; b. a radiation detector mounted for movement along the track and disposed so that throughout said movement it will be responsive to radiation received from a given point on said axis; c. a first drive mechanism operable to drive the detector along the track independently of any rotation of the track about said axis; d. a second drive mechanism operable to rotate the track about said axis; and e. means for conjointly operating the two drive mechanisms so as to cause the detector to traverse a predetermined path relative to said axis.
Claim 3
Dependent Claim
40 words
A spectrometer according to claim 1, in which the means for conjointly operating the two drive mechanisms comprises means operable to change the relationship between the movement of the detector along the track and the rotational movement of the track.
Claim 4
Dependent Claim
15 words
A spectrometer according to claim 1, in which each drive mechanism incorporates an electric servomotor.
Claim 5
Dependent Claim
167 words
In a spectrometer for use with radiation dispersive elements having a focusing characteristic, the combination of: a. a fixed rectilinear track; b. a carriage mounted for movement along said track; c. a support for a dispersive element mounted on the carriage for rotation about an axis perpendicular to the length of said track; d. a second rectilinear track mounted on the carriage for rotation about said axis and with the length of the second track perpendicular to said axis; e. a radiation detector mounted for movement along the second track and disposed so that throughout such movement it will be responsive to radiation received from a given point on said axis; f. a first drive mechanism operable to drive the detector along the second track; g. a second drive mechanism operable to rotate the second track about said axis; h. a third drive mechanism operable to drive the carriage along the fixed track; and i. a fourth drive mechanism operable to rotate said support about said axis.
Claim 6
Dependent Claim
167 words
In a spectrometer for use with radiation dispersive elements having a focusing characteristic, the combination of: a. a fixed rectilinear track; b. a carriage mounted for movement along said track; c. a support for a dispersive element mounted on the carriage for rotation about an axis perpendicular to the length of said track; d. a second rectilinear track mounted on the carriage for rotation about said axis and with the length of the second track perpendicular to said axis; e. a radiation detector mounted for movement along the second track and disposed so that throughout such movement it will be responsive to radiation received from a given point on said axis; f. a first drive mechanism operable to drive the detector along the second track; g. a second drive mechanism operable to rotate the second track about said axis; h. a third drive mechanism operable to drive the carriage along the fixed track; and i. a fourth drive mechanism operable to rotate said support about said axis.
Claim 7
Dependent Claim
15 words
A spectrometer according to claim 4, in which each drive mechanism incorporates an electric servomotor.
Claim 8
Dependent Claim
27 words
A spectrometer according to claim 4, in which the fourth drive mechanism is operable also to rotate the second track about said axis synchronously with said support.
References Cited (Backward Citations)
US3384756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |