Multiple barrel dispensing device

• US 5,033,650 A
• Filed: 06/15/1989
• Issued: 07/23/1991
• Est. Priority Date: 03/09/1987
• Status: Expired due to Fees

• Current Assignee: Bernard F. Harkins, Edward R. Spehar, Laurence Colin
• Original Assignee: Bernard F. Harkins, Edward R. Spehar, Laurence Colin
• Inventors: Harkins, Bernard F., Spehar, Edward R., Colin, Laurence
• Primary Examiner(s): SKAGGS JR, H GRANT
• Application Number:
  US07/354,311
• Time in Patent Office: 768 Days
• Field of Search: 222/132, 222/136, 222/137, 222/145, 222/276, 222/386, 222/459, 222/490, 222/567, 433/80, 433/89, 433/90, 285/396, 285/361
• US Class Current: 222/137
• CPC Class Codes: A61C 5/62 Applicators, e.g. syringes or guns
• CPC Class Codes: A61C 5/64 for multi-component compositions
• CPC Class Codes: B05C 17/00506 Means for connecting the outlet element to, or for disconnecting it from, the hand tool or its container
• CPC Class Codes: B05C 17/00516 Shape or geometry of the outlet orifice or the outlet element
• CPC Class Codes: B05C 17/00553 with means allowing the stock of material to consist of at least two different components
• CPC Class Codes: B05C 17/00593 Hand tools of the syringe type
• CPC Class Codes: B05C 17/01 with manually mechanically or electrically actuated piston or the like B05C17/00533 takes precedence
• CPC Class Codes: B65D 81/325 Containers having parallel or coaxial compartments, provided with a piston or a movable bottom for discharging contents

Abstract

A multiple barrel device for separate storage of viscous materials and for dispensing and intermixing same through a common static mixing element when pressure is applied. The device includes a multiple barrel syringe and a removable nozzle which is coupled to the syringe to form an interlock and a simultaneous pressure seal. The head of the syringe has a plurality of lugs which form bayonet grooves for engaging a complementary number of tong-like projections extending from the head of the nozzle. The head of the nozzle contains an annular bead which simultaneouly seals the interface at the intercoupling between the head of the syringe and the head of the nozzle.

Claims

1. A dispensing device for intermixing at least two viscous materials and for dispensing the mixed product in a preferred volumetric ratio comprising:

a syringe having a plurality of elongated storage compartments for independently storing the materials to be intermixed and a common head having a separate channel extending from each compartment for discharging the stored materials from a common discharge end of said head;

a nozzle assembly having a head and a single nozzle with an elongated channel forming an opening for dispensing the materials discharged from the syringe, a common static mixing element disposed in said elongated channel for intermixing the materials fed from said syringe, with the head of said nozzle having a bore and a conically shaped area extending from said bore into said elongated channel to receive said static mixing element; and

means for removably coupling the head of the nozzle to the head of said syringe with said means comprising;

a plurality of lugs projecting from the head of said syringe in an arrangement for forming bayonet grooves having an axial disposition relative to the longitudinal axis of the syringe and a circumferential disposition, tong-like projections surrounding the bore in said nozzle head for engaging said bayonet grooves in the head of said syringe to form an interlock between said syringe and said nozzle, and a protruding annular bead disposed in said

nozzle rearward of the tong-like projections at the entrance to the conically shaped area for forming a seal upon engaging the head of said syringe simultaneously with the formation of said interlock and to prevent leakage when viscous material is being discharged from said device.

2. A dispensing device, as defined in claim 1, further comprising means for driving the materials from said storage compartments under pressure.

3. A dispensing device, as defined in claim 2, wherein said head of said syringe has a flat surface surrounding said common discharge end for engaging said annular bead.

4. A dispensing device, as defined in claim 2, wherein said head of said syringe has an annular groove for engaging said annular bead to form a tongue-and-groove seal.

5. A dispensing device, as defined in claim 2, further comprising a washer-like member for interposing between said annular bead and said head of said syringe to form a seal.

6. A dispensing device, as defined in claim 2, wherein said plurality of tong-like projections extend radially inward into said bore in said nozzle.