초록 ▼

A device for heating a substantially solid glue stick or the like includes a heating chamber housing having a heating chamber formed therein and a separate elongated passage including a first open end for receiving a substantially solid glue stick, and a second opposed open end defining an exit open

A device for heating a substantially solid glue stick or the like includes a heating chamber housing having a heating chamber formed therein and a separate elongated passage including a first open end for receiving a substantially solid glue stick, and a second opposed open end defining an exit opening for melted glue. The heating chamber has an open side and a positive temperature coefficient resistant cartridge positioned in the chamber for heating the housing adjacent to the passage to a temperature sufficient to soften a glue stick therein. A cam structure is located in the chamber engaged with the cartridge adjacent the open side of the chamber and a spring is mounted on the housing in engagement with the cam structure for urging the cam into engagement with the cartridge thereby to accommodate expansion and contraction of the cartridge during operation of the device.

대표청구항 ▼

A device for heating a substantially solid heat softenable glue stick comprising, a heating chamber housing having a heating chamber formed therein and a separate elongated passage including a first open end for receiving a substantially solid glue stick and a second opposed open end defining an exi

A device for heating a substantially solid heat softenable glue stick comprising, a heating chamber housing having a heating chamber formed therein and a separate elongated passage including a first open end for receiving a substantially solid glue stick and a second opposed open end defining an exit opening for melted glue, said heating chamber being generally U-shaped and having an open side defined between a pair of integral side walls formed in the housing; a positive temperature coefficient resistance cartridge means positioned within said heating chamber between said side walls for heating the housing adjacent said passage to a temperature sufficient to soften a glue stick therein, cam means in said chamber between said side walls engaged with said cartridge adjacent the open side of the chamber, and separate spring means formed independently of said cam means mounted on said housing and engaged with said cam means for urging the cam means into engagement with the cartridge to accommodate expansion and contraction thereof; said cartridge, said side walls of the heating chamber, said spring means and said cam means all having cooperating surfaces which allow relative movement of the cam means with respect to the cartridge and housing in a plurality of directions to accommodate expansion and contraction of the cartridge.