Patent US3970509A successfully refreshed from Google Patents.
US3970509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for simultaneously cutting, sealing and stitching thermoplastic material
Assignee: INTERNATIONAL TEXTILE COMPANY Inc
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Filing: 1974-11-18
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Granted: 1976-07-20
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Expires: 1994-11-18
Abstract
Abstract An ultrasonic horn cooperates with a cutting wheel and two stitching wheels to simultaneously cut, seal and stitch thermoplastic material. The cutting and stitching wheels are urged towards the ultrasonic horn by a spring biased pivot arm upon which the wheels are rotatably mounted. The combination of ultrasonic horn, wheels and pivot arm define a cutting assembly. The entire cutting assembly is connected to the reciprocating rod of a piston which alternately lowers the cutting assembly into a cutting position wherein the material to be cut is located between the horn tip and the wheels, and raises the cutting assembly into a return position wherein the material to be cut is below and out of contact with the cutting assembly.
Inventors
- 👤 Joseph Vitale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:47
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/74; B29C65/745; B29C65/7455; B29C65/02; B29C65/08; B29C65/083; B29C65/086; B29C65/743; B29C65/7435; B29C65/7443; B29C66/00; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/816; B29C66/8161; B29C66/82; B29C66/822; B29C66/8221; B29C66/824; B29C66/8242; B29C66/83; B29C66/836; B29C66/8362; B65; B65H; B65H21/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
182 words
A machine for simultaneously cutting, sealing and stitching thermoplastic material, comprising: A frame assembly; means mounted on said frame assembly for advancing the material through the machine and for positioning the section of material to be cut along a predetermined cutting plane; a frame member mounted on said frame assembly transversely to the direction in which the said material is advanced-- was inserted; and in a plane parallel to the cutting plane; a cutting assembly including a sonic horn having a flat cutting head, a plurality of wheels for pressing the material against said cutting head, and wheel support means biasing the working edges of said wheels against said cutting head; reciprocating means slidably mounted on said frame member for alternately placing said cutting assembly in a first position wherein said cutting plane is situated between said cutting head and said wheels, and a second position wherein said cutting head and said wheels are disposed from said cutting plane in a direction perpendicular to said cutting plane; and means for moving said reciprocating means and said cutting assembly along said frame member.
Claim 2
Dependent Claim
182 words
A machine for simultaneously cutting, sealing and stitching thermoplastic material, comprising: A frame assembly; means mounted on said frame assembly for advancing the material through the machine and for positioning the section of material to be cut along a predetermined cutting plane; a frame member mounted on said frame assembly transversely to the direction in which the said material is advanced-- was inserted; and in a plane parallel to the cutting plane; a cutting assembly including a sonic horn having a flat cutting head, a plurality of wheels for pressing the material against said cutting head, and wheel support means biasing the working edges of said wheels against said cutting head; reciprocating means slidably mounted on said frame member for alternately placing said cutting assembly in a first position wherein said cutting plane is situated between said cutting head and said wheels, and a second position wherein said cutting head and said wheels are disposed from said cutting plane in a direction perpendicular to said cutting plane; and means for moving said reciprocating means and said cutting assembly along said frame member.
Claim 3
Dependent Claim
146 words
A machine as claimed in claim 1 wherein said plurality of wheels includes a cutting wheel and a stitching wheel and wherein said wheel support means comprises: a support bar connected to said reciprocating means; a pivot arm pivotally connected to said support bar, said pivot arm having first and second ends extending in opposite directions, respectively, from said support bar; said stitching wheel rotatably mounted on said first end of said pivot arm for concurrent rotation with a first pulley; a second pulley rotatably mounted on said second end of said pivot arm; a belt connecting said first pulley to said second pulley whereby rotation of said second pulley causes rotation of said first pulley; means for rotating said second pulley so as to cause rotation of said stitching wheel; and means for biasing said first end of said pivot arm towards said sonic horn.
Claim 4
Dependent Claim
15 words
A machine as claimed in claim 2 wherein said reciprocating means includes a pneumatic piston.
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) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |