US3344526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffraction grating apparatus
Assignee: Individual
•
Filing: 1965-03-01
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Granted: 1967-10-03
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Expires: 1985-03-01
Abstract
No abstract record available.
Inventors
- 👤 Horsfield Walter Reginald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:06
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/18; G02B5/1847; G02B5/1852; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/17; Y10T408/65; Y10T408/675; Y10T408/6757; Y10T409/00; Y10T409/30; Y10T409/30868; Y10T409/308792
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A DIFFERENTIAL GRATING RULING MECHANISM COMPRISING, IN COMBINATION, A SUPPORT FOR A GRATING BLANK, A CROSSCARRIAGE, MEANS FOR EFFECTING TRANSVERSE RELATIVE MOVEMENT BETWEEN THE SUPPORT AND THE CROSS-CARRIAGE, A RULING TOOL MOUNTED ON THE CROSS-CARRIAGE TO RULE A GRATING LINE DURING SAID TRANSVERSE RELATIVE M OVEMENT, MEANS FOR EFFECTING LONGITUDINAL RELATIVE MOVEMENT BETWEEN THE SUPPORT AND CROSS-CARRIAGE TO PRODUCE A SPACED SERIES OF SAID LINES UPON THE BLANK, SAID LONGITUDINAL MOVEMENT MEANS COMPRISING A HYDRAULIC RAM AND A PRESSURE FLUID GENERATING DEVICE OPERATING SAID RAM, THE MECHANISM INCLUDING MEASUREMENT MEANS RESPONSIVE TO THE CHANGE OF RELATIVE LONGITUDINAL POSITION, AT SUCCEEDING RULING STATIONS, BETWEEN THE SUPPORT AND THE CROSS-CARRIAGE, AND SERVO MEANS ACTUABLE BY SAID MEASUREMENT MEANS AND BEING CONNECTED TO SAID PRESSURE GENERATING DEVICE TO CONTROL THE FLOW THERETHROUGH TO SAID HYDRAULIC RAM IN DEPENDENCE UPON THE CHANGE OF SAID RELATIVE POSITION.
Claim 2
Dependent Claim
142 words
A DIFFERENTIAL GRATING RULING MECHANISM COMPRISING, IN COMBINATION, A SUPPORT FOR A GRATING BLANK, A CROSSCARRIAGE, MEANS FOR EFFECTING TRANSVERSE RELATIVE MOVEMENT BETWEEN THE SUPPORT AND THE CROSS-CARRIAGE, A RULING TOOL MOUNTED ON THE CROSS-CARRIAGE TO RULE A GRATING LINE DURING SAID TRANSVERSE RELATIVE M OVEMENT, MEANS FOR EFFECTING LONGITUDINAL RELATIVE MOVEMENT BETWEEN THE SUPPORT AND CROSS-CARRIAGE TO PRODUCE A SPACED SERIES OF SAID LINES UPON THE BLANK, SAID LONGITUDINAL MOVEMENT MEANS COMPRISING A HYDRAULIC RAM AND A PRESSURE FLUID GENERATING DEVICE OPERATING SAID RAM, THE MECHANISM INCLUDING MEASUREMENT MEANS RESPONSIVE TO THE CHANGE OF RELATIVE LONGITUDINAL POSITION, AT SUCCEEDING RULING STATIONS, BETWEEN THE SUPPORT AND THE CROSS-CARRIAGE, AND SERVO MEANS ACTUABLE BY SAID MEASUREMENT MEANS AND BEING CONNECTED TO SAID PRESSURE GENERATING DEVICE TO CONTROL THE FLOW THERETHROUGH TO SAID HYDRAULIC RAM IN DEPENDENCE UPON THE CHANGE OF SAID RELATIVE POSITION.
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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |