Apparatus for simultaneously cutting, sealing and stitching thermoplastic material
US3970509A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1974 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | Nov 18, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H21/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.