Patent · US Expired

Method of operating a hot melt dispenser

US5012953A · kind A · utility

1Cited by

21References

1Claims

0Family size

Assignee

Bostik, Inc. · US

Inventors

Willi Borst · Florstadt, DE
Christian Wooge · Bad Homburg vor der Höhe, DE

Key dates

Filing date	Nov 21, 1989
Grant date	May 7, 1991
Priority date	—
Expiry date	Nov 21, 2009

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB05C17/0053
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Trigger-operated hot-melt dispenser with positive-feed mechanism wherein at least one continuous feed-belt in axial contact with a rod of thermoplastic material and operated to urge said rod into the melt chamber of said hot-melt dispenser is characterized in that release of the trigger first reverses the feed-belt to withdraw the rod a pre-set amount away from the melt-chamber and after a pre-set interval moves the feed-belt transversely out of contact with the rod. This facilitates removal and replacement of a part-spent rod. Preferably the rate of the transverse movement is greater than the tracking speed of the belt. A preferred embodiment includes twin, parallel feed belts which together grip an intervening rod.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.