Nozzle for sealant cartridges

• US 20060097088A1
• Filed: 09/10/2003
• Published: 05/11/2006
• Est. Priority Date: 09/11/2002
• Status: Abandoned Application

• Current Assignee: Andrew Willers, Friedhelm Jezuchowski
• Original Assignee: Andrew Willers, Friedhelm Jezuchowski
• Inventors: Jezuchowski, Friedhelm, Willers, Andrew
• Application Number:
  US10/527,487
• Publication Number:
  US 20060097088A1
• Time in Patent Office: Days
• US Class Current: 239/600
• CPC Class Codes: B05C 17/00516 Shape or geometry of the outlet orifice or the outlet element

Abstract

This invention concerns a nozzle (1) for sealant cartridges that are typically used in caulking guns. The nozzle (1) includes an inlet end portion (2) that enables attachment of the nozzle (1) to a cartridge. The nozzle (1) has a tapered body (9) that terminates at an outlet (4). The tapered body (9) includes a cavity formed with a cross-sectional profile of triangle, arcuate or a crescent shape. Such profile produces a correspondingly shaped bead that permits less skilled working of the bead to achieve the desired chamfer or bevel on the sealant.

Claims

1. A nozzle for a sealant cartridge, the nozzle having a threaded inlet end portion for attachment to an outlet of a sealant cartridge and a body portion that extends away from the inlet end portion, the body portion having a cavity which tapers inwardly from the inlet end portion towards a nozzle outlet, the cavity being characterised in that the cross-sectional profile of the nozzle outlet of the body portion is triangular, arcuate or crescent shaped so as to produce a correspondingly shaped bead.

2. A nozzle according to claim 1, wherein the nozzle outlet shape is a crescent and crescent shape comprises intersecting parabolic, elliptical or irregular arcs.

3. A nozzle according to claim 1, wherein the nozzle outlet shape is a crescent and the crescent shape comprises intersecting circular arcs.

4. A nozzle according to claim 3, wherein the arc shapes are defined according to a predetermined ratio of diameters.

5. A nozzle according to claim 4, wherein the ratio is 1:

1.2.

6. A nozzle according to any one of claims 4 or 5, wherein the arc having a relatively smaller diameter forms a semi-circle.

7. A nozzle of claim 1, wherein the nozzle outlet shape is arcuate with one side comprising a parabolic, elliptical or irregular arc and the other side being a straight line.

8. A nozzle of claim 1, wherein the nozzle outlet shape is substantially triangular.

9. A nozzle according to any preceding claim, wherein the cavity has a shape corresponding to the shape of the nozzle outlet.

10. A nozzle according to any preceding claim, wherein the nozzle has a shoulder portion intermediate the inlet end portion and body portion, said shoulder portion including ribs to assist a user to grip the nozzle during attachment to and detachment from a cartridge.

11. A nozzle according to any preceding claim, wherein the cavity has a generally uniform crescent profile, of differing size according to the taper, from the nozzle outlet to at least a mid-point of the body portion away from the nozzle outlet.