Cove base nozzle for dispensing applications

A nozzle assembly for dispensing viscous material, said nozzle assembly being convertible from use in combination with a device for dispensing viscous material packaged in a cartridge wherein when the cartridge is housed within such a dispensing device, a conical tip of the cartridge extends through an opening located in an end plate located at the front end of the dispensing device to use in combination with a device for dispensing viscous material provided in unpackaged bulk form, wherein said device for dispensing said viscous material provided in unpackaged bulk form includes a barrel having an elongate chamber for housing said viscous material in unpackaged bulk form, wherein said viscous material in unpackaged bulk form is drawn directly into said barrel by rearward retraction of a piston assembly also located within said barrel, said chamber including an opening at a distal dispensing end thereof, and an end cap being removably retained on said chamber distal end, said nozzle assembly comprising:

• a. a nozzle comprising a proximal base portion, a distal tip portion, a hollow passageway extending between said proximal base portion and said distal tip portion, and an annular flange in proximity to said proximal base portion, wherein when dispensing viscous material from a cartridge, said base portion is arranged for receiving said cartridge conical tip therein and said flange is arranged for placement between said end plate of said dispensing device and said cartridge to retain said nozzle within said dispensing device for dispensing viscous material packaged within said cartridge;
• b. a locking plate provided for utilization when said nozzle assembly is used in combination with a device for dispensing viscous material in said unpackaged bulk form, said locking plate including a shank arranged to extend through a central opening of said end cap and to engage with said proximal base portion of said nozzle assembly provided to tightly retain said nozzle to said end cap, said locking plate being disengagable from said nozzle assembly and removable therefrom when said nozzle assembly is used in combination with a device for dispensing viscous material packaged in a cartridge and;
• c. said end cap additionally comprising cutouts extending radially from said central opening, said locking plate including radially extending locking tabs arranged to seat within said cutouts of said central opening of said end cap.