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US4955305A
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Modular system for use with X-Y peripherals
Assignee: Melco Industries Inc
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Filing: 1988-09-23
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Granted: 1990-09-11
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Expires: 2008-09-23
Abstract
Abstract A modular system for use with X-Y peripherals is provided. The system includes a master controller operatively connected to one or more slave X-Y peripherals in a network. Different types of slave X-Y peripherals are accommodated by the system, e.g. sewing machines and engravers. Each slave X-Y peripheral has a unique address for independent communication with the master controller. The master controller tracks the functional relationship existing between it and each slave X-Y peripheral using state architecture. Servo control of a tool or head in an X-Y peripheral is also disclosed. The tool is movable in a Z dimension relative to a workpiece residing in an X-Y plane. Method and apparatus are also provided for positioning a carriage of an X-Y peripheral at a home or reference position in one or more dimensions.
Inventors
- 👤 Steven F. Garnier
- 👤 Robert B. Ton
- 👤 Vernon S. Turner
- 👤 James K. Pilarski
- 👤 Mark R. Magill
- 👤 Allen J. Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:00
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/21; G05B19/23; G05B19/231; G05B19/232; D; D05; D05B; D05B21/00; G05B19/401; G05B19/4015; G05B19/414; G05B19/4142; G05B2219/00; G05B2219/30; G05B2219/31; G05B2219/31151; G05B2219/33; G05B2219/33125; G05B2219/33147; G05B2219/33244; G05B2219/33245; G05B2219/33338; G05B2219/35; G05B2219/35012; G05B2219/35264; G05B2219/36; G05B2219/36395; G05B2219/42; G05B2219/42033; G05B2219/45; G05B2219/45195; G05B2219/45212; G05B2219/50; G05B2219/50024
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
66 words
A method for moving a carriage in a sewing machine from a random position to a reference position relative to a stationary body, comprising: moving a carriage in a first direction from a random position towards a known position; using a signal to determine when said carriage reaches said known position; and moving said carriage in a second direction a known distance to a reference position.
Claim 2
Independent Claim
66 words
A method for moving a carriage in a sewing machine from a random position to a reference position relative to a stationary body, comprising: moving a carriage in a first direction from a random position towards a known position; using a signal to determine when said carriage reaches said known position; and moving said carriage in a second direction a known distance to a reference position.
Claim 3
Dependent Claim
28 words
A method, as claimed in claim 1, wherein: said step of using a signal includes using a velocity signal to determine when said carriage reaches said known position.
Claim 4
Dependent Claim
30 words
A method, as claimed in claim 2, wherein: said step of using a velocity signal includes using a velocity error signal to determine when said carriage reaches said known position.
Claim 5
Dependent Claim
35 words
A method, as claimed in claim 3, wherein: said step of using a velocity error signal includes comparing said velocity error signal to to a threshold to determine when said carriage reaches said known position.
Claim 6
Dependent Claim
28 words
A method, as claimed in claim 1, wherein: said step of using a signal includes using a position signal to determine when said carriage reaches said known position.
Claim 7
Dependent Claim
30 words
A method, as claimed in claim 1, wherein: said step of using a position signal includes using a position error signal to determine when said carriage reaches said known position.
Claim 8
Dependent Claim
32 words
A method, as claimed in claim 6, wherein: said step of using a position error signal includes using a constant position error signal to determine when said carriage reaches said known position.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |