Patent US3843875A successfully refreshed from Google Patents.
US3843875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Numerical control checkering system
Assignee: Remington Arms Co LLC
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Filing: 1973-03-07
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Granted: 1974-10-22
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Expires: 1993-03-07
Abstract
Abstract This invention comprises a system for automatically inscribing a preselected design in a work piece utilizing a power-driven inscribing tool, preprogrammed control means incorporating a pattern of movement of the power-driven inscribing tool relative to the work piece along a multiplicity of independent axes including two preselected axes lying in a common plane conforming generally to incremental portions of the work surface of the work piece, positioning means responsive to the preprogrammed control means locating the power-driven inscribing tool in work-effecting relationship with respect to the work piece, and feedback means biased against the work surface of the work piece positioning the power-driven inscribing tool along the depth-establishing axis and the tilt axis of the pattern in conformity with preselected criteria for depth and tilt embodied in the pattern of movement incorporated in the preprogrammed control means.
Inventors
- 👤 L Goodstal
- 👤 W Leek
- 👤 C Workman
- 👤 E Yetter
- 👤 R Sanzo
- 👤 R Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:46
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/188; B; B44; B44B; B44B3/00; B44B3/009; B44B3/04; B44B3/06; B44B3/061; G05B2219/00; G05B2219/30; G05B2219/34; G05B2219/34083; G05B2219/34156; G05B2219/35; G05B2219/35158; G05B2219/45; G05B2219/45212; G05B2219/49; G05B2219/49242; G05B2219/49243; G05B2219/50; G05B2219/50353; Y; Y02; Y02P; Y02P90/00; Y02P90/02; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/300896
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
105 words
A method of automatically inscribing a preselected design in a work piece utilizing a power-driven tool concurrently positioned relative to said work piece along a multiplicity of independent axes comprising cutting the definition lines of said design along two preselected axes lying in a common plane conforming generally to incremental portions of the work surface of said work piece responsive to a preprogrammed control input, and simultaneously positioning said tool along a predetermined depth-establishing axis for said design and along a predetermined tilt axis maintaining predetermined orientation of said tool with respect to said work surface of said work piece responsive to feedback control input.
Claim 2
Independent Claim
105 words
A method of automatically inscribing a preselected design in a work piece utilizing a power-driven tool concurrently positioned relative to said work piece along a multiplicity of independent axes comprising cutting the definition lines of said design along two preselected axes lying in a common plane conforming generally to incremental portions of the work surface of said work piece responsive to a preprogrammed control input, and simultaneously positioning said tool along a predetermined depth-establishing axis for said design and along a predetermined tilt axis maintaining predetermined orientation of said tool with respect to said work surface of said work piece responsive to feedback control input.
Claim 3
Independent Claim
115 words
A method of automatically inscribing a preselected design in a work piece having a generally planar work surface utilizing a power-driven tool concurrently actuated relative to said work piece along a multiplicity of independent axes comprising cutting the definition lines of said design by positioning said tool along two preselected axes lying in a common plane conforming generally to incremental portions of said work surface of said work piece responsive to a preprogrammed control input, and simultaneously positioning said tool along a predetermined depth-establishing axis for said design and along a predetermined tilt axis maintaining predetermined orientation of said tool with respect to said work surface of said work piece responsive to feedback control input.
Claim 4
Independent Claim
115 words
A method of automatically inscribing a preselected design in a work piece having a generally planar work surface utilizing a power-driven tool concurrently actuated relative to said work piece along a multiplicity of independent axes comprising cutting the definition lines of said design by positioning said tool along two preselected axes lying in a common plane conforming generally to incremental portions of said work surface of said work piece responsive to a preprogrammed control input, and simultaneously positioning said tool along a predetermined depth-establishing axis for said design and along a predetermined tilt axis maintaining predetermined orientation of said tool with respect to said work surface of said work piece responsive to feedback control input.
Claim 5
Independent Claim
131 words
A method of automatically inscribing a preselected design in a work piece having a curved work surface utilizing a power-driven tool concurrently actuated relative to said work piece along a multiplicity of independent axes comprising cutting the definition lines of said design by positioning said tool along two preselected axes lying in a common plane corresponding generally to the length and width definition lines of said design while rotating said work piece about its longitudinal axis to develop said design circumferentially of said work piece responsive to a preprogrammed control input, and simultaneously positioning said tool along a predetermined depth-establishing axis for said design and along a predetermined tilt axis maintaining predetermined orientation of said tool with respect to said work surface of said work piece responsive to feedback control input.
Claim 6
Independent Claim
131 words
A method of automatically inscribing a preselected design in a work piece having a curved work surface utilizing a power-driven tool concurrently actuated relative to said work piece along a multiplicity of independent axes comprising cutting the definition lines of said design by positioning said tool along two preselected axes lying in a common plane corresponding generally to the length and width definition lines of said design while rotating said work piece about its longitudinal axis to develop said design circumferentially of said work piece responsive to a preprogrammed control input, and simultaneously positioning said tool along a predetermined depth-establishing axis for said design and along a predetermined tilt axis maintaining predetermined orientation of said tool with respect to said work surface of said work piece responsive to feedback control input.
Claim 7
Dependent Claim
138 words
Apparatus for automatically inscribing a preselected design in a work piece comprising, in combination, a power-driven inscribing tool, preprogrammed control means incorporating a pattern of movement of said power-driven inscribing tool relative to said work piece along a multiplicity of independent axes including two preselected axes lying in a common plane conforming generally to incremental portions of the work surface of said work piece, feedback control means biased against said work surface of said work piece directing said power-driven inscribing tool along a predetermined depth establishing axis and a predetermined tilt axis for maintaining predetermined orientation of said tool with respect to said work surface of said work piece, and positioning means responsive to said preprogrammed control means and to said feedback control means locating said powerdriven inscribing tool in work-effecting relationship with respect to said work piece.
Claim 8
Dependent Claim
138 words
Apparatus for automatically inscribing a preselected design in a work piece comprising, in combination, a power-driven inscribing tool, preprogrammed control means incorporating a pattern of movement of said power-driven inscribing tool relative to said work piece along a multiplicity of independent axes including two preselected axes lying in a common plane conforming generally to incremental portions of the work surface of said work piece, feedback control means biased against said work surface of said work piece directing said power-driven inscribing tool along a predetermined depth establishing axis and a predetermined tilt axis for maintaining predetermined orientation of said tool with respect to said work surface of said work piece, and positioning means responsive to said preprogrammed control means and to said feedback control means locating said powerdriven inscribing tool in work-effecting relationship with respect to said work piece.
Claim 9
Dependent Claim
23 words
Apparatus for automatically inscribing a preselected design in a work piece according to claim 4 wherein said design is a diamond checkered inscription.
Claim 10
Dependent Claim
61 words
Apparatus for automatically inscribing a preselected design in a work piece according to claim 4 provided with power-driven spindle work support means effecting preselected displacement of said work piece with respect to said powerdriven inscribing tool as one component of relative movement between said work piece and said power-driven inscribing tool in the course of automatic inscription of said work piece.
Claim 11
Dependent Claim
33 words
Apparatus for automatically inscribing a preselected design in a work piece according to claim 4 utilizing a plurality of power-driven inscribing tools intermittently indexed into work-effecting relationship with respect to said work piece.
Claim 12
Dependent Claim
24 words
Apparatus for automatically inscribing a preselected design in a work piece according to claim 4 wherein said positioning means comprises electrical pulse-actuated stepper motors.
Claim 13
Dependent Claim
42 words
Apparatus for automatically inscribing a preselected design in a work piece according to claim 4 wherein said feedback means comprise linear variable differential transformers provided with centrally disposed axially movable armatures having sensor elements contacting the work surface of said work piece.
Claim 14
Dependent Claim
57 words
Apparatus for automatically inscribing a preselected design in a work piece according to claim 7 wherein said power-driven inscribing tools intermittently indexed into work-effecting relationship with respect to said work piece consist of a rotary cutter for inscribing generally straight lines and a router for inscribing curved boundary lines for said preselected design in said work piece.
Claim 15
Dependent Claim
63 words
Apparatus for automatically inscribing a preselected design in a work piece according to claim 9 wherein the feedback signal output of said feedback means is routed to said preprogrammed control means and incorporated in the output of said preprogrammed control means to provide complete instructions to said positioning means locating said power-driven inscribing tool in work-effecting relationship with respect to said work piece.
Claim 16
Dependent Claim
237 words
Apparatus for automatically inscribing a preselected design in a work piece comprising, in combination, a power-driven inscribing tool, preprogrammed control means incorporating a pattern of movement of said power-driven inscribing tool relative to said work piece along a multiplicity of independent axes including two preselected axes lying in a common plane conforming generally to incremental portions of the work surface of said work piece, feedback control means biased against said work surface of said work piece directing said power-driven inscribing tool along a predetermined depth establishing axis and a predetermined tilt axis for maintaining predetermined orientation of said tool with respect to said work surface of said work piece, said feedback control means delivering a feedback signal output routed to said preprogrammed control means and incorporated in the output of said preprogrammed control means to provide exclusively the work-effecting relationship depth of cut and tilt instructions to said positioning means immediately preparatory to and during actual cutting operation of said power-driven inscribing tool whereas said preprogrammed control means exclusively determines the position of said power-driven inscribing tool at all other times, said feedback control means comprising linear variable differential transformers provided with centrally disposed axially movable armatures having sensor elements contacting the work surface of said work piece, and positioning means responsive to said preprogrammed control means and to said feedback control means locating said power-driven inscribing tool in work-effecting relationship with respect to said work piece.
Claim 17
Dependent Claim
237 words
Apparatus for automatically inscribing a preselected design in a work piece comprising, in combination, a power-driven inscribing tool, preprogrammed control means incorporating a pattern of movement of said power-driven inscribing tool relative to said work piece along a multiplicity of independent axes including two preselected axes lying in a common plane conforming generally to incremental portions of the work surface of said work piece, feedback control means biased against said work surface of said work piece directing said power-driven inscribing tool along a predetermined depth establishing axis and a predetermined tilt axis for maintaining predetermined orientation of said tool with respect to said work surface of said work piece, said feedback control means delivering a feedback signal output routed to said preprogrammed control means and incorporated in the output of said preprogrammed control means to provide exclusively the work-effecting relationship depth of cut and tilt instructions to said positioning means immediately preparatory to and during actual cutting operation of said power-driven inscribing tool whereas said preprogrammed control means exclusively determines the position of said power-driven inscribing tool at all other times, said feedback control means comprising linear variable differential transformers provided with centrally disposed axially movable armatures having sensor elements contacting the work surface of said work piece, and positioning means responsive to said preprogrammed control means and to said feedback control means locating said power-driven inscribing tool in work-effecting relationship with respect to said work piece.
Claim 18
Dependent Claim
60 words
Apparatus for automatically inscribing a preselected design in a work piece according to claim 12 utilizing the sum and difference displacements of said sensor elements with respect to the zero sensor line of said inscribing tool as criteria for depth establishing axis and tilt axis orientation of said inscribing tool with respect to said work surface of said work piece.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |