Hot melt glue gun having needle valve
AssigneeAdhesive Technologies, Inc.
InventorRichard A. Belanger
Life of this patent
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Abstract
A hand-held hot melt glue gun having a melt chamber, a needle and a nozzle that is movable with respect to the needle to open or close a discharge port in fluid communication with the melt chamber. A spring closure urges the needle and nozzle toward relative positions to close the discharge port. An opening element moves the nozzle with respect to the needle to open the discharge port, and a trigger mechanism is provided for advancing solid glue into the melt chamber and for operating the opening element. A time delay mechanism provides a time delay between the opening of the discharge port and advancement of glue into the melt chamber.
Claims4
A hand-held hot melt glue gun comprising a melt chamber, a needle and a nozzle movable with respect to said needle operative to open or close a discharge port in fluid communication with said melt chamber, a closure element that urges said needle and nozzle toward relative positions where said discharge port is closed, an opening element for moving said nozzle with respect to said needle to relative positions where said discharge port is open, and a trigger mechanism for advancing solid glue into said melt chamber and for operating said opening element, wherein said trigger mechanism provides a time delay between opening of said discharge port and advancement of said glue into said melt chamber.
Dependencies are inferred from the claim text.