초록 ▼

A hot melt adhesive dispensing gun has a needle valve movably mounted within a dispensing nozzle provided with a discharge port from which hot melt adhesive material can be dispensed, wherein the needle valve is normally seated upon a valve seat. An electrical switch mechanism is mounted upon the di

A hot melt adhesive dispensing gun has a needle valve movably mounted within a dispensing nozzle provided with a discharge port from which hot melt adhesive material can be dispensed, wherein the needle valve is normally seated upon a valve seat. An electrical switch mechanism is mounted upon the dispensing gun for controlling the activation of an adhesive material supply pump as well as a solenoid air valve for controlling the supply of swirl air in conjunction with the supply and dispensing of the hot melt adhesive material. A trigger member is operatively connected to the electrical switch mechanism and the needle valve such that when the trigger member is actuated or squeezed, the electrical switch mechanism is CLOSED prior to the unseating of the valve member from its valve seat so as to ensure a sufficient supply of hot melt adhesive material and swirl air to the dispensing nozzle prior to the actual dispensing of the hot melt adhesive material from the discharge port.

대표청구항 ▼

1. A hydraulic fluid dispensing gun, comprising:a valve actuator housing; a handle connected to said valve actuator housing; a dispensing nozzle having a discharge port defined therein from which hydraulic fluid can be dispensed; a valve seat defined within said dispensing nozzle; a valve member; va

1. A hydraulic fluid dispensing gun, comprising:a valve actuator housing; a handle connected to said valve actuator housing; a dispensing nozzle having a discharge port defined therein from which hydraulic fluid can be dispensed; a valve seat defined within said dispensing nozzle; a valve member; valve actuator means disposed within said valve actuator housing for moving said valve member between a first position at which said valve member is seated upon said valve seat so as to prevent hydraulic fluid from being transmitted to said discharge port of said dispensing nozzle, and a second position at which said valve member is unseated from said valve seat so as to permit hydraulic fluid to be transmitted to said discharge port of said dispensing nozzle; an electrical switch mechanism for controlling a hydraulic fluid supply means for supplying hydraulic fluid to said applicator gun; and a trigger member mounted upon said handle, operatively connected to said valve actuator means, and directly engaged with said electrical switch mechanism for actuating said electrical switch mechanism prior to the actuation of said valve actuator means to such an extent that said valve actuator means causes said valve member to be unseated from said valve seat such that when said valve actuator means causes said valve member to be unseated from said valve seat, a sufficient supply of the hydraulic fluid is already supplied to said dispensing nozzle.