US4318359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pattern generator for electronic sewing machines
Assignee: Janome Corp
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Filing: 1980-07-31
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Granted: 1982-03-09
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Expires: 2000-07-31
Abstract
Abstract An electronic pattern stitch sewing machine is disclosed in which a pattern can be progressively enlarged and reduced at the beginnings thereof under control of a central processing unit (CPU).
Inventors
- 👤 Tsuneo Takayama
- 👤 Yoshinobu Tonomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:33
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/10; D; D05; D05B; D05B19/00; D05B19/02; D05B19/04; D05B19/10; G05B19/18; G05B19/408; G05B2219/00; G05B2219/30; G05B2219/45; G05B2219/45195; G05B2219/49; G05B2219/49221
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
119 words
An improvement to a pattern generator that produces enlargements and reductions in patterns to be sewn in a manner that such production is invarient in size while patterns are continuously repeatedly stitched, comprising: a central processing unit determining beginnings and ends of patterns during stitching and operating in a manner that a pattern can be enlarged and reduced at a beginning thereof in response to an appropriate command; and at least one switch connected to the central processing unit and providing an appropriate command to the central processing unit when said at least one switch is operated by a user, whereby during continuous repeated stitching of a pattern, the pattern can be progressively enlarged and reduced at beginnings thereof.
Claim 2
Dependent Claim
119 words
An improvement to a pattern generator that produces enlargements and reductions in patterns to be sewn in a manner that such production is invarient in size while patterns are continuously repeatedly stitched, comprising: a central processing unit determining beginnings and ends of patterns during stitching and operating in a manner that a pattern can be enlarged and reduced at a beginning thereof in response to an appropriate command; and at least one switch connected to the central processing unit and providing an appropriate command to the central processing unit when said at least one switch is operated by a user, whereby during continuous repeated stitching of a pattern, the pattern can be progressively enlarged and reduced at beginnings thereof.
Claim 3
Dependent Claim
11 words
The improvement defined by claim 1, wherein the patterns are two-dimensional.
Claim 4
Dependent Claim
18 words
The improvement defined by claim 1, wherein enlargement and reduction take place at a constant ratio during stitching.
Claim 5
Dependent Claim
19 words
The improvement defined by claim 3, wherein the constant ratio may be selected from a range of available ratios.
Claim 6
Dependent Claim
37 words
The improvement defined by claim 1, wherein there is a first switch and a second switch, the first switch providing a command to enlarge the pattern, and the second switch providing a command to reduce the pattern.
Claim 7
Dependent Claim
18 words
The improvement defined by claim 2, wherein each dimension of the pattern may be independently enlarged and reduced.
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) | 1985-03-08 | 1985-09-07 | 1986-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-08 | 1989-09-07 | 1990-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-08 | 1993-09-07 | 1994-03-09 | $7700.00 | Window Closed / Lapsed |