US3639991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for and method of manufacturing diffraction gratings
Assignee: Individual
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Filing: 1969-09-24
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Granted: 1972-02-08
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Expires: 1989-09-24
Abstract
Abstract Apparatus for and method of manufacturing diffraction gratings wherein a series of parallel lines is impressed into a workpiece which is moved at a constant rate past a line-scribing means which is cyclically moved into contact with the workpiece in a predetermined time sequence correlated to the rate of movement of the workpiece and the desired number of lines per inch, and wherein both the workpiece and scribing means are mounted by flexible, resilient members for movement by flexure of the members.
Inventors
- 👤 Robert A Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:28
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/24; G; G01; G01D; G01D13/00; G01D13/02; G01D13/12; G02; G02B; G02B5/00; G02B5/18; G02B5/1847; G02B5/1852
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
265 words
Apparatus for producing diffraction gratings wherein a multiplicity of fine, closely spaced, parallel lines are scribed on a planar surface of a workpiece comprising elongated scribing means for marking lines upon the planar surface of a workpiece, workpiece mOunting means for mounting the workpiece with its planar surface disposed perpendicular to said elongated scribing means, first mounting means for mounting said elongated scribing means for movement toward and away from said workpiece mounting means, said first mounting means including a mounting member having a flexible, resilient hinge portion and an offset portion spaced therefrom for movement about the hinge portion through flexure thereof, second mounting means mounting said workpiece mounting means for movement in the same plane as the flexible, resilient hinge portion of said mounting member and in the same plane as said planar surface of said workpiece, said mounting means cooperating in maintaining said elongated scribing means and said workpiece in a particular attitude one relative to the other to maintain said elongated scribing means perpendicular to the planar surface of the workpiece, first moving means connected to said first mounting means for imparting cyclic motion in a predetermined time sequence to said one of said scribing and workpiece mounting means mounted for movement in said first direction, and second moving means connected to said one of said scribing and workpiece mounting means mounted for movement in said second direction for imparting constant motion thereto in said second direction at a rate correlated to the time sequence of cyclic movement in said first direction and to the desired number of lines per inch.
Claim 2
Dependent Claim
265 words
Apparatus for producing diffraction gratings wherein a multiplicity of fine, closely spaced, parallel lines are scribed on a planar surface of a workpiece comprising elongated scribing means for marking lines upon the planar surface of a workpiece, workpiece mOunting means for mounting the workpiece with its planar surface disposed perpendicular to said elongated scribing means, first mounting means for mounting said elongated scribing means for movement toward and away from said workpiece mounting means, said first mounting means including a mounting member having a flexible, resilient hinge portion and an offset portion spaced therefrom for movement about the hinge portion through flexure thereof, second mounting means mounting said workpiece mounting means for movement in the same plane as the flexible, resilient hinge portion of said mounting member and in the same plane as said planar surface of said workpiece, said mounting means cooperating in maintaining said elongated scribing means and said workpiece in a particular attitude one relative to the other to maintain said elongated scribing means perpendicular to the planar surface of the workpiece, first moving means connected to said first mounting means for imparting cyclic motion in a predetermined time sequence to said one of said scribing and workpiece mounting means mounted for movement in said first direction, and second moving means connected to said one of said scribing and workpiece mounting means mounted for movement in said second direction for imparting constant motion thereto in said second direction at a rate correlated to the time sequence of cyclic movement in said first direction and to the desired number of lines per inch.
Claim 3
Dependent Claim
201 words
Apparatus for producing diffraction gratings wherein a multiplicity of fine, closely spaced, parallel lines are marked on a planar surface of a workpiece comprising: elongated scribing means for marking lines upon the planar surface of a workpiece, workpiece-mounting means for mounting workpiece with its planar surface disposed perpendicular to said elongated scribing means, means mounting said elongated scribing means for movement toward and away from the workpiece-mounting means, a pair of spaced, generally parallel flexible resilient arm members rigidly interconnected at their opposite ends and supporting said workpiece-mounting means at one end thereof, said pair of arm members being rigidly supported at their other end for movement of said workpiece mounting means substantially in a single plane due to flexure of said arm means, first moving means connected to the said scribing means mounting means for imparting cyclic motion in a predetermined time sequence to said elongated scribing means, and second moving means connected to said pair of resilient arm members whereby imparting constant motion thereto in a direction perpendicular to the movement of said scribing means at a rate correlated to the time sequence of cyclic movement of said scribing means and to the desired number of lines per inch.
Claim 4
Dependent Claim
201 words
Apparatus for producing diffraction gratings wherein a multiplicity of fine, closely spaced, parallel lines are marked on a planar surface of a workpiece comprising: elongated scribing means for marking lines upon the planar surface of a workpiece, workpiece-mounting means for mounting workpiece with its planar surface disposed perpendicular to said elongated scribing means, means mounting said elongated scribing means for movement toward and away from the workpiece-mounting means, a pair of spaced, generally parallel flexible resilient arm members rigidly interconnected at their opposite ends and supporting said workpiece-mounting means at one end thereof, said pair of arm members being rigidly supported at their other end for movement of said workpiece mounting means substantially in a single plane due to flexure of said arm means, first moving means connected to the said scribing means mounting means for imparting cyclic motion in a predetermined time sequence to said elongated scribing means, and second moving means connected to said pair of resilient arm members whereby imparting constant motion thereto in a direction perpendicular to the movement of said scribing means at a rate correlated to the time sequence of cyclic movement of said scribing means and to the desired number of lines per inch.
Claim 5
Dependent Claim
106 words
Apparatus according to claim 2 wherein said second moving means is connected to said second mounting means and comprises a fluid container suspended below the workpiece mounting means carried by said second mounting means, a second fluid container disposed at a higher elevation than said first fluid container, siphoning means connecting said second container to said first container for siphoning liquid from the second container into the first container at a constant flow rate, and means mounting said second container for vertical movement at a rate correlated to the rate of withdrawal of liquid therefrom and hence the rate of downward movement of said first container.
Claim 6
Independent Claim
172 words
A method of producing diffraction gratings wherein a multiplicity of fine, closely spaced, parallel lines are marked on a planar surface of a workpiece comprising the steps of mounting an elongated scribing tool and a workpiece having a planar surface for relative movement therebetween in generally perpendicular first and second directions, then imparting cyclical motion in a predetermined time sequence in the first direction and displacing one of the scribing tool anD the workpiece toward and away from the other to indent lines into the planar workpiece surface with the scribing tool while applying a constantly increasing weight to a resiliently displaceable workpiece support while maintaining the rates of weight increase and resilient deflection constant and thereby imparting constant motion in the second direction at a rate correlated to the time sequence of cyclic movement in the first direction and to a desired number of lines per inch and displacing the workpiece in a plane parallel to the planar workpiece surface to displace indented lines in the workpiece into parallel spaced relation.
Claim 7
Independent Claim
172 words
A method of producing diffraction gratings wherein a multiplicity of fine, closely spaced, parallel lines are marked on a planar surface of a workpiece comprising the steps of mounting an elongated scribing tool and a workpiece having a planar surface for relative movement therebetween in generally perpendicular first and second directions, then imparting cyclical motion in a predetermined time sequence in the first direction and displacing one of the scribing tool anD the workpiece toward and away from the other to indent lines into the planar workpiece surface with the scribing tool while applying a constantly increasing weight to a resiliently displaceable workpiece support while maintaining the rates of weight increase and resilient deflection constant and thereby imparting constant motion in the second direction at a rate correlated to the time sequence of cyclic movement in the first direction and to a desired number of lines per inch and displacing the workpiece in a plane parallel to the planar workpiece surface to displace indented lines in the workpiece into parallel spaced relation.
Claim 8
Dependent Claim
45 words
A method according to claim 4 wherein the imparting of cyclical motion includes generating cyclical fluid pressure pulses and the displacing of one of the indenting tool and workpiece includes applying the generated pulses to the indenting tool to move the same toward the workpiece.
Claim 9
Dependent Claim
46 words
A method according to claim 4 wherein the applying of increasing weight includes transferring weighting liquid into container connected to the resiliently displaceable workpiece support and the maintaining of a constant rate of weight increase includes maintaining a constant flow rate of liquid into the container.
Claim 10
Dependent Claim
49 words
A method according to claim 4 wherein the applying of increasing weight includes siphoning weight liquid from a supply container into a weighting container connected to the resiliently displaceable workpiece support and the maintaining of a constant rate of weight increase includes maintaining a constant head during the siphoning.
Claim 11
Dependent Claim
37 words
A method according to claim 7 wherein the maintaining a constant head during siphoning includes moving the supply and weighting container vertically one relative to the other at a rate correlated to the transfer of liquid therebetween.
Claim 12
Independent Claim
159 words
A method of producing diffraction gratings wherein a multiplicity of fine, closely spaced, parallel lines are marked on a planar surface of a workpiece comprising the steps of mounting an elongated scribing tool and a workpiece having a planar surface for relative movement therebetween in generally perpendicular first and second directions, then imparting cyclical motion in a predetermined time sequence in the first direction and pivoting the elongated scribing tool toward and away from the workpiece about a pivot location lying in the plane of the planar workpiece surface to thereby indent lines into the planar workpiece surface with the elongated scribing tool while imparting constant motion in the second direction at a rate correlated to the time sequence of cyclic movement in the first direction and to a desired number of lines per inch and displacing the workpiece in a plane parallel to the planar workpiece surface to displace indented lines in the workpiece into parallel spaced relation.
Claim 13
Independent Claim
159 words
A method of producing diffraction gratings wherein a multiplicity of fine, closely spaced, parallel lines are marked on a planar surface of a workpiece comprising the steps of mounting an elongated scribing tool and a workpiece having a planar surface for relative movement therebetween in generally perpendicular first and second directions, then imparting cyclical motion in a predetermined time sequence in the first direction and pivoting the elongated scribing tool toward and away from the workpiece about a pivot location lying in the plane of the planar workpiece surface to thereby indent lines into the planar workpiece surface with the elongated scribing tool while imparting constant motion in the second direction at a rate correlated to the time sequence of cyclic movement in the first direction and to a desired number of lines per inch and displacing the workpiece in a plane parallel to the planar workpiece surface to displace indented lines in the workpiece into parallel spaced relation.
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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |