Hot glue gun having annular liquid glue retention chamber

Coating implements with material supply – With means to impart heat to material

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Details

2221462, 2221465, B67D 500

Patent

active

060658886

ABSTRACT:
A hot glue gun is provided with a heating chamber having an annular-shaped liquid glue retention chamber which is defined to extend between a wall of the heating chamber and the periphery of a solid glue stick feed region of the heating chamber. The annular shaped liquid glue retention chamber is sized such that during operation of the glue gun, not substantially less than ten percent (10%) of the volume of the chamber will contain melted glue which is disposed between the periphery of the solid glue stick feed region and the interior surface of the heating chamber. The rearward end of the heating chamber is sealed by a bushing having an inner surface with an interior diameter which is slightly smaller to approximately the same size as the exterior diameter of the periphery of the glue sticks, and thereby provides a seal for sealing liquid glue within the heating chamber. The bushing preferably has a periphery with an exterior diameter for adapting standard glue guns for use with glue sticks of slightly smaller sizes, such that the standard glue guns may be converted to have annular shaped liquid retention chambers disposed interiorly within the heating chambers thereof. A gripper housing adapter is also provided by a liner sleeve, for converting the gripper mechanisms of such standard glue guns for receiving the glue sticks of smaller nominal sizes than that for which they are designed.

REFERENCES:
patent: 3960296 (1976-06-01), Nord
patent: 4026440 (1977-05-01), Crum et al.
patent: 4601597 (1986-07-01), Bertram et al.
patent: 4951846 (1990-08-01), Oster et al.
patent: 5026188 (1991-06-01), Capodieci
patent: 5362164 (1994-11-01), Wingert

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