Push button bayonet tube connector

• US 20050057042A1
• Filed: 09/13/2004
• Published: 03/17/2005
• Est. Priority Date: 09/12/2003
• Status: Abandoned Application

• Current Assignee: Value Plastics Incorporated (Nordson Corporation)
• Original Assignee: Value Plastics Incorporated (Nordson Corporation)
• Inventors: Wicks, Jeffrey Clark
• Application Number:
  US10/940,089
• Publication Number:
  US 20050057042A1
• Time in Patent Office: Days
• US Class Current: 285/305
• CPC Class Codes: F16L 37/0841 by means of a transversally slidable locking member surrounding the tube

Abstract

A push button bayonet tube connector assembly for releasably connecting two fluid passageways is described. The bayonet assembly includes a male and female member. The female member includes a spring actuated push button engagement assembly having a locked or engaged position and an unlocked or disengaged position with the male member. A method for fabricating the push button bayonet tube connector assembly is also described.

Claims

1. A push button bayonet assembly for connecting a first section of tubing with a second section of tubing, the push button bayonet assembly comprising:

a female member comprising a female housing having a channel extending therethrough, the female housing further comprising a push button engagement assembly, the push button engagement assembly comprising a top platform portion and a dependent ring latch portion defining an aperture, the engagement assembly movable between a first position and a second position, and biased in the first position; and

a male member having a connector shaft having a groove extending at least partially circumferentially around the shaft;

wherein the ring latch aperture receives the male member shaft when the engagement assembly is in the second position, and the ring latch engages the groove in the first position to retain the shaft in the channel.

2. The push button bayonet assembly as defined in claim 1, wherein the ring latch aperture has a major axis oriented vertically for receiving the male member shaft when the engagement assembly is in the second position and a lower end of the aperture having a smaller effective diameter than the upper end of the aperture for receiving the male member of the shaft when the engagement assembly is in the first position.

3. The push button bayonet assembly as defined in claim 1, wherein the ring latch further defines a pair of laterally extending prongs and the female housing further defines a U-shaped wall having an inwardly facing surface, the inwardly facing surface having a ledge for interaction with the ring latch prongs when the push button engagement assembly is in the first position.

4. The push button bayonet assembly as defined in claim 1, wherein the male member further comprises a radial flange extending from the shaft, the radial flange not positionable within the female housing, wherein the radial flange provides enhanced manipulation of the male member when moving the male member into and out of the female housing.

5. The push button bayonet assembly as defined in claim 1, wherein the female housing has a barbed end for engagement with the first section of tubing and the male member has a barbed end for engagement with the second section of tubing.

6. The push button bayonet assembly as defined in claim 1, wherein the female housing is U-shaped and defines a slot positioned axially from the ring latch for receiving the ring latch when the push button engagement assembly is in the second position.

7. The push button bayonet assembly as defined in claim 1, further comprising a sealing member positioned within the female housing, an end of the male member shaft received within the female housing defines an engagement surface, wherein the engagement surface forms a seal with the sealing member when the push button engagement assembly is in the first position.

8. The push button bayonet assembly of claim 1, wherein the ring latch aperture has a tear-drop shape and wherein a first diameter opening of the aperture receives the male member shaft when the push button engagement assembly is in a first position and is received by a second diameter opening when the engagement assembly is in a second position.

9. The push button bayonet assembly of claim 1, wherein the biasing force retaining the male member shaft in the ring latch is exerted by a spring.

10. The push button bayonet assembly of claim 9, wherein the spring is compressed between the push button engagement assembly and the female housing to move the push button engagement assembly from the first position to the second position.

11. The push button bayonet assembly of claim 10, wherein the female housing is substantially U-shaped having a housing platform that extends between a first sidewall and a second sidewall of the U-shaped housing, the housing platform and U-shaped housing walls forming a channel and wherein the spring is compressed between the push button engagement assembly and the housing platform.

13. The method of claim 11 wherein the polymer is a thermoplastic polymer.

12. A method for fabricating a push button bayonet assembly, the method comprising:

molding, out of polymer, a male member having a barbed end for receiving a first section of tubing, a U-shaped female housing having an internal notch for receiving a sealing member, a female housing face plate with barbed end for receiving a second section of tubing, and a push button engagement assembly;

positioning a sealing member within the notch of the female housing;

positioning a spring between the push button engagement assembly and the female housing; and

sonically welding the female housing face plate to the female housing, the barbed end of the female housing face plate extending away from the female housing.