Glue gun with advancing mechanism for glue stick

Claim 1

A device for heating a substantially solid heat softenable glue stick until said glue is substantially melted and ejecting said melted glue from said device, said device comprising: (a) a housing; (b) a heating chamber mounted in said housing, said heating chamber having an opening therethrough, an end of said opening defining an entrance for said substantially solid glue stick and another end defining an exit for said melted glue; (c) means for advancing said substantially solid glue stick into the entrance of said opening in said heating chamber to melt said glue and to eject said melted glue from said device, said means comprising a longitudinally slidable carriage member having a longitudinal opening for said glue stick and a transverse opening in communication with said longitudinal opening, said transverse opening having internal peripheral bearing surfaces, an angularly displaceable gripper member having a transverse lever and an gripper head, said transverse lever having an end extending through said transverse opening, said gripper head being receivable into said transverse opening and having a front end, a rear end, an upper end and a gripper tooth near said gripper head front and upper end for gripping said glue stick, said gripper head further having exterior peripheral surfaces substantially defined by its front and rear ends which slidably bear against said internal peripheral bearing surfaces of said transverse opening to retain said gripper head in said transverse opening while permitting angular displacement of said head so that a force applied to said end of said transverse lever will cause angular displacement of said gripper head causing said gripper tooth to grip said glue stick.

Claim 2

A device for heating a substantially solid heat softenable glue stick until said glue is substantially melted and ejecting said melted glue from said device, said device comprising: (a) a housing; (b) a heating chamber mounted in said housing, said heating chamber having an opening therethrough, an end of said opening defining an entrance for said substantially solid glue stick and another end defining an exit for said melted glue; (c) means for advancing said substantially solid glue stick into the entrance of said opening in said heating chamber to melt said glue and to eject said melted glue from said device, said means comprising a longitudinally slidable carriage member having a longitudinal opening for said glue stick and a transverse opening in communication with said longitudinal opening, said transverse opening having internal peripheral bearing surfaces, an angularly displaceable gripper member having a transverse lever and an gripper head, said transverse lever having an end extending through said transverse opening, said gripper head being receivable into said transverse opening and having a front end, a rear end, an upper end and a gripper tooth near said gripper head front and upper end for gripping said glue stick, said gripper head further having exterior peripheral surfaces substantially defined by its front and rear ends which slidably bear against said internal peripheral bearing surfaces of said transverse opening to retain said gripper head in said transverse opening while permitting angular displacement of said head so that a force applied to said end of said transverse lever will cause angular displacement of said gripper head causing said gripper tooth to grip said glue stick.

Claim 3

A device for heating a substantially solid heat softenable glue stick until said glue is substantially melted and ejecting said melted glue from said device, said device comprising: (a) a housing; (b) a heating chamber mounting in said housing, said heating chamber having an opening therethrough, an end of said opening defining an entrance for said substantially solid glue stick and another end defining an exit for said melted glue; (c) means for advancing said substantially solid heat glue stick into the entrance of said opening in said heating chamber to melt said glue and to eject said melted glue from said device, said means comprising a longitudinally slidable carriage member having a longitudinal opening for said glue stick, a first transverse opening in communication with said longitudinal opening and a second transverse opening in communication with said first transverse opening and transverse to said first transverse opening, said first transverse opening having internal peripheral bearing surfaces, a substantially T-shaped angularly displaceable gripper member having an upper member defining a gripper head and a lower member defining a transverse lever, said transverse lever having an end extending through said second transverse opening, said gripper head being receivable into said first transverse opening and having a front end, a rear end, an upper end and a gripper tooth near said gripper head front and upper end for gripping said glue stick, said gripper head further having exterior peripheral surfaces substantially defined by its front and rear ends which slidably bear against said internal peripheral bearing surfaces of said first transverse opening to retain said gripper head in said first transverse opening while permitting angular displacement of said head so that a force applied to said end of said transverse lever will cause angular displacement of said gripper head causing said gripper tooth to grip said glue stick.

Claim 4

A device for heating a substantially solid heat softenable glue stick until said glue is substantially melted and ejecting said melted glue from said device, said device comprising: (a) a housing; (b) a heating chamber mounting in said housing, said heating chamber having an opening therethrough, an end of said opening defining an entrance for said substantially solid glue stick and another end defining an exit for said melted glue; (c) means for advancing said substantially solid heat glue stick into the entrance of said opening in said heating chamber to melt said glue and to eject said melted glue from said device, said means comprising a longitudinally slidable carriage member having a longitudinal opening for said glue stick, a first transverse opening in communication with said longitudinal opening and a second transverse opening in communication with said first transverse opening and transverse to said first transverse opening, said first transverse opening having internal peripheral bearing surfaces, a substantially T-shaped angularly displaceable gripper member having an upper member defining a gripper head and a lower member defining a transverse lever, said transverse lever having an end extending through said second transverse opening, said gripper head being receivable into said first transverse opening and having a front end, a rear end, an upper end and a gripper tooth near said gripper head front and upper end for gripping said glue stick, said gripper head further having exterior peripheral surfaces substantially defined by its front and rear ends which slidably bear against said internal peripheral bearing surfaces of said first transverse opening to retain said gripper head in said first transverse opening while permitting angular displacement of said head so that a force applied to said end of said transverse lever will cause angular displacement of said gripper head causing said gripper tooth to grip said glue stick.

Claim 6

A device for heating a substantially solid heat softenable glue stick until said glue is substantially melted and ejecting said melted glue from said device, said device comprising: (a) a housing; (b) a heating chamber mounted in said housing, said heating chamber having an opening therethrough, an end of said opening defining an entrance for said substantially solid glue stick and another end defining an exit for said melted glue; (c) means for advancing said substantially solid glue stick into the entrance of said opening in said heating chamber to melt said glue and to eject said melted glue from said device, said means comprising a longitudinally slidable carriage member having a longitudinal opening for said glue stick, a first transverse opening in communication with said longitudinal opening and extending fully through one side of said carriage member, a second transverse opening in communication with said first transverse opening and transverse to said first transverse opening, said first transverse opening having internal peripheral bearing surfaces, a substantially T-shaped angularly displaceable gripper member having an upper member defining a gripper head and a lower member defining a transverse lever, said transerse lever having an end extending through said second transverse opening, said gripper head being receivable into said first transverse opening and having a front end, a rear end, an upper end and a gripper tooth near said gripper head front and upper end for gripping said glue stick, said front and rear ends of said gripper head further having exterior peripheral surfaces substantially defined by its front and rear ends which slidably bear against said internal peripheral bearing surfaces of said first transverse opening to retain said gripper head in said first transverse opening while permitting angular displacement of said head so that a force applied to said end of said transverse lever will cause angular displacement of said gripper head causing said gripper tooth to grip said glue stick.

Claim 7

A device for heating a substantially solid heat softenable glue stick until said glue is substantially melted and ejecting said melted glue from said device, said device comprising: (a) a housing; (b) a heating chamber mounted in said housing, said heating chamber having an opening therethrough, an end of said opening defining an entrance for said substantially solid glue stick and another end defining an exit for said melted glue; (c) means for advancing said substantially solid glue stick into the entrance of said opening in said heating chamber to melt said glue and to eject said melted glue from said device, said means comprising a longitudinally slidable carriage member having a longitudinal opening for said glue stick, a first transverse opening in communication with said longitudinal opening and extending fully through one side of said carriage member, a second transverse opening in communication with said first transverse opening and transverse to said first transverse opening, said first transverse opening having internal peripheral bearing surfaces, a substantially T-shaped angularly displaceable gripper member having an upper member defining a gripper head and a lower member defining a transverse lever, said transerse lever having an end extending through said second transverse opening, said gripper head being receivable into said first transverse opening and having a front end, a rear end, an upper end and a gripper tooth near said gripper head front and upper end for gripping said glue stick, said front and rear ends of said gripper head further having exterior peripheral surfaces substantially defined by its front and rear ends which slidably bear against said internal peripheral bearing surfaces of said first transverse opening to retain said gripper head in said first transverse opening while permitting angular displacement of said head so that a force applied to said end of said transverse lever will cause angular displacement of said gripper head causing said gripper tooth to grip said glue stick.

Claim 8

A device for heating a substantially solid heat softenable glue stick until said glue is substantially melted and ejecting said melted glue from said device, said device comprising: (a) a housing; (b) a heating chamber mounted in said housing, said heating chamber having an opening therethrough, an end of said opening defining an entrance for said substantially solid glue stick and another end defining an exit for said melted glue; (c) means for advancing said substantially solid glue stick into the entrance of said opening in said heating chamber to melt said glue and to eject said melted glue from said device, said means comprising a longitudinally slidable carriage member having a longitudinal opening for said glue stick and a transverse opening in communication with said longitudinal opening, said transverse opening having internal peripheral bearing surfaces, an angularly displaceable gripper member having a transverse lever and an gripper head, said transverse lever having an end extending through said transverse opening, said gripper head being receivable into said transverse opening and having a front end, a rear end, an upper end and a gripper tooth near said gripper head front and upper end for gripping said glue stick, said gripper head further having exterior peripheral surfaces near its front and rear ends which slidably bear against said internal peripheral bearing surfaces of said transverse opening to retain said gripper head in said transverse opening while permitting angular displacement of said head so that a force applied to said end of said transverse lever will cause angular displacement of said gripper head causing said gripper tooth to grip said glue stick; and a manually operable trigger, said trigger having a finger receiving end and a spring attachment end, said trigger being pivoted about a point on said trigger between said finger receiving end and said spring attachment end; a tension spring having two ends, one of said ends being attached to said spring attachment end of said trigger and the other of said ends being attached directly to said gripper member to apply a force to said gripper member to cause angular rotation of said gripper member, said spring being extensible to prevent excessive force from being applied to the glue stick.

Claim 9

A device for heating a substantially solid heat softenable glue stick until said glue is substantially melted and ejecting said melted glue from said device, said device comprising: (a) a housing; (b) a heating chamber mounted in said housing, said heating chamber having an opening therethrough, an end of said opening defining an entrance for said substantially solid glue stick and another end defining an exit for said melted glue; (c) means for advancing said substantially solid glue stick into the entrance of said opening in said heating chamber to melt said glue and to eject said melted glue from said device, said means comprising a longitudinally slidable carriage member having a longitudinal opening for said glue stick and a transverse opening in communication with said longitudinal opening, said transverse opening having internal peripheral bearing surfaces, an angularly displaceable gripper member having a transverse lever and an gripper head, said transverse lever having an end extending through said transverse opening, said gripper head being receivable into said transverse opening and having a front end, a rear end, an upper end and a gripper tooth near said gripper head front and upper end for gripping said glue stick, said gripper head further having exterior peripheral surfaces near its front and rear ends which slidably bear against said internal peripheral bearing surfaces of said transverse opening to retain said gripper head in said transverse opening while permitting angular displacement of said head so that a force applied to said end of said transverse lever will cause angular displacement of said gripper head causing said gripper tooth to grip said glue stick; and a manually operable trigger, said trigger having a finger receiving end and a spring attachment end, said trigger being pivoted about a point on said trigger between said finger receiving end and said spring attachment end; a tension spring having two ends, one of said ends being attached to said spring attachment end of said trigger and the other of said ends being attached directly to said gripper member to apply a force to said gripper member to cause angular rotation of said gripper member, said spring being extensible to prevent excessive force from being applied to the glue stick.

Claim 11

A device for heating a substantially solid heat softenable glue stick until said glue is substantially melted and ejecting said melted glue from said device, said device comprising: (a) a housing; (b) a heating chamber mounted in said housing, said heating chamber having an opening therethrough, an end of said opening defining an entrance for said substantially solid glue stick and another end defining an exit for said melted glue; (c) means for advancing said substantially solid heat glue stick into the entrance of said opening in said heating chamber to melt said glue and to eject said melted glue from said device, said means comprising (i) a longitudinally slidable carriage member having a longitudinal opening for said glue stick and a transverse opening in communication with said longitudinal opening, said transverse opening having internal peripheral bearing surfaces, (ii) a gripper member disposed in said carriage member, said gripper member having a front end and a rear end, said front end having means for gripping said glue stick, said gripper member further including external peripheral bearing surfaces substantially defined by its front and rear ends for slidably bearing against said internal peripheral bearing surfaces, said gripper member having a first position with respect to said carriage member wherein said gripping means grips said rod and a second position wherein said gripper member does not grip said rod.

Claim 12

A device for heating a substantially solid heat softenable glue stick until said glue is substantially melted and ejecting said melted glue from said device, said device comprising: (a) a housing; (b) a heating chamber mounted in said housing, said heating chamber having an opening therethrough, an end of said opening defining an entrance for said substantially solid glue stick and another end defining an exit for said melted glue; (c) means for advancing said substantially solid heat glue stick into the entrance of said opening in said heating chamber to melt said glue and to eject said melted glue from said device, said means comprising (i) a longitudinally slidable carriage member having a longitudinal opening for said glue stick and a transverse opening in communication with said longitudinal opening, said transverse opening having internal peripheral bearing surfaces, (ii) a gripper member disposed in said carriage member, said gripper member having a front end and a rear end, said front end having means for gripping said glue stick, said gripper member further including external peripheral bearing surfaces substantially defined by its front and rear ends for slidably bearing against said internal peripheral bearing surfaces, said gripper member having a first position with respect to said carriage member wherein said gripping means grips said rod and a second position wherein said gripper member does not grip said rod.

Claim 13

A device for heating a substantially solid heat softenable glue stick until said glue is substantially melted and ejecting said melted glue from said device, said device comprising: (a) a housing; (b) a heating chamber mounted in said housing, said heating chamber having an opening therethrough, an end of said opening defining an entrance for said substantially solid glue stick and another end defining an exit for said melted glue; (c) means for advancing said substantially solid glue stick into the entrance of said opening in said heating chamber to melt said glue and to eject said melted glue from said device, said means comprising a longitudinally slidable carriage member having a longitudinal opening for said glue stick and a transverse opening in communication with said longitudinal opening, said transverse opening having internal peripheral bearing surfaces, an angularly displaceable gripper member having a transverse lever and an gripper head, said transverse lever having an end extending through said transverse opening, said gripper head being receivable into said transverse opening and having a front end, a rear end, an upper end and a gripper corner near said gripper head front and upper end for gripping said glue stick, said gripper head further having exterior peripheral surfaces substantially defined by its front and rear ends which slidably bear against said internal peripheral bearing surfaces of said transverse opening to retain said gripper head in said transverse opening while permitting angular displacement of said head so that a force applied to said end of said transverse lever will cause angular displacement of said gripper head causing said gripper corner to grip said glue stick.

Claim 14

A device for heating a substantially solid heat softenable glue stick until said glue is substantially melted and ejecting said melted glue from said device, said device comprising: (a) a housing; (b) a heating chamber mounted in said housing, said heating chamber having an opening therethrough, an end of said opening defining an entrance for said substantially solid glue stick and another end defining an exit for said melted glue; (c) means for advancing said substantially solid glue stick into the entrance of said opening in said heating chamber to melt said glue and to eject said melted glue from said device, said means comprising a longitudinally slidable carriage member having a longitudinal opening for said glue stick and a transverse opening in communication with said longitudinal opening, said transverse opening having internal peripheral bearing surfaces, an angularly displaceable gripper member having a transverse lever and an gripper head, said transverse lever having an end extending through said transverse opening, said gripper head being receivable into said transverse opening and having a front end, a rear end, an upper end and a gripper corner near said gripper head front and upper end for gripping said glue stick, said gripper head further having exterior peripheral surfaces substantially defined by its front and rear ends which slidably bear against said internal peripheral bearing surfaces of said transverse opening to retain said gripper head in said transverse opening while permitting angular displacement of said head so that a force applied to said end of said transverse lever will cause angular displacement of said gripper head causing said gripper corner to grip said glue stick.