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Fixture for Making Spliceless Plastic Belts

IP.com Disclosure Number: IPCOM000097436D
Original Publication Date: 1962-Dec-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Nejezchleb, V: AUTHOR

Abstract

The fixture is used to manufacture a plastic belt having a precise internal dimension. The fixture has a precise cylindrical outer surface containing air ports. These are symmetrically distributed around the circular contour of the surface. The ports radially project through it to an inner hollow volume capable of receiving air under pressure through respective air inlets. The outer surface has a circular shoulder on it which steps the diameter at an end of the cylinder to a smaller value.

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Fixture for Making Spliceless Plastic Belts

The fixture is used to manufacture a plastic belt having a precise internal dimension. The fixture has a precise cylindrical outer surface containing air ports.

These are symmetrically distributed around the circular contour of the surface. The ports radially project through it to an inner hollow volume capable of receiving air under pressure through respective air inlets. The outer surface has a circular shoulder on it which steps the diameter at an end of the cylinder to a smaller value.

A belt made of plastic material, such as MYLAR* plastic, is placed about the cylindrical surface beneath the air ports which do not at first have any air pressure applied. The MYLAR material is cured over a period of time, such as twenty-four hours, which causes it to shrink to the contour of the cylindrical surface.

After the MYLAR has shrunk, it tends to cling to the cylindrical surface, and is not readily removable without damaging the MYLAR belt. In such case, air under pressure is applied to the air inlets. The air escapes through the ports beneath the MYLAR belt and provides air lubrication between the belt and the cylindrical surface. This permits movement of the belt by pushing a plastic end ring. The belt can initially be cut along the cutting edge by a knife like device (not shown). After the MYLAR material is moved longitudinally an amount equal to the desired width of the belt, it can be cut again along the cutting edge to...