Latch assembly for joining two conduits

• US 8,448,994 B2
• Filed: 08/06/2012
• Issued: 05/28/2013
• Est. Priority Date: 07/03/2008
• Status: Active Grant

• Current Assignee: Nordson Corporation
• Original Assignee: Nordson Corporation
• Inventors: Pisula, James D. Jr., Williams, Bruce A., Narayanan, Ravikumar, Lombardi, Francis J. III, Elshof, Robert J., Lalouette, Marc
• Primary Examiner(s): BOCHNA, DAVID
• Application Number:
  US13/568,076
• Publication Number:
  US 20120299290A1
• Time in Patent Office: 295 Days
• Field of Search: 285/308, 285/305, 285/921, 285/317
• US Class Current: 285/308
• CPC Class Codes: A61M 2039/1016 Unlocking means providing a secure or comfortable disconnection
• CPC Class Codes: A61M 2039/1027 Quick-acting type connectors
• CPC Class Codes: A61M 39/10 Tube connectors; Tube couplings A61M39/02 takes precedence; connecting needles to syringes or hubs A61M5/34; connecting catheter tubes to hubs A61M25/0014
• CPC Class Codes: A61M 39/1011 Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence
• CPC Class Codes: F16L 37/0982 with a separate member for releasing the coupling
• CPC Class Codes: F16L 37/0987 the flexible hook being progressively compressed by axial tensile loads acting on the coupling
• CPC Class Codes: Y10S 285/921 Snap-fit

Abstract

A latch assembly for connection of conduit, the assembly comprising a female portion and a male portion, wherein each of the female portion and the male portion have a shell and a connection device. The connection device of the female portion includes a connection assembly with a molded-in slot, a release button, and a raised rib or alternatively is a connection opening. The connection device of the male portion includes a cantilevered region with a ramped engagement feature or alternatively is a raised cantilevered release button. When connected the cantilevered region or button deflects to accommodate the female portion until the ramped engagement feature or button engages the molded-in slot or connection opening, thus releasing the deflection. Depressing the release button disengages the latch allowing separation of the assembly.

Claims

1. A connector assembly for coupling together first and second fluid conduits, the assembly comprising

a first connector including a proximal end for coupling with the first fluid conduit, a distal end opposite the proximal end, a fluid pathway between the proximal and distal ends, and a first housing extending about at least a portion of the fluid pathway, wherein

the first housing has opposing major faces and peripheral sidewalls connecting the major faces;

and

the first housing defines a slot in each of the major faces open to an inner cavity within the first housing that at least partially defines a respective cantilevered release button within each of the major faces of the first housing extending distally to a free end of the cantilevered release button from a fixed end of the cantilevered release button; and

a second connector including a proximal end for coupling with the second fluid conduit, a distal end opposite the proximal end, a fluid pathway between the proximal and distal ends, and a second housing extending about at least a portion of the fluid pathway, wherein

the second housing has opposing major walls each defining a cantilevered region therein extending proximally to a free end of the cantilevered region from a fixed end of the cantilevered region with an engagement feature near the free end of the cantilevered region; and

wherein

when the distal ends of the connectors are moved towards each other in opposed fashion, the cantilevered regions pass underneath the slots to allow the engagement features to engage the slots and connect the first connector to the second connector.

2. A latch assembly for the connection of conduits, the latch assembly comprising

a first connector including a first housing, a slot defined within a wall of the housing such that the slot is open to an inner cavity within the first housing, and a release button forming a part of the wall of the first housing and defined at least partially by the slot;

and

a second connector including a second housing that defines a cantilevered region within a wall of the second housing, the cantilevered region further having an engagement feature;

wherein

the cantilevered region is adapted to engage with the first housing of the first connector without deflecting the release button;

the engagement feature is adapted to engage the slot; and

the release button is adapted to disengage the engagement feature from the slot when depressed, thereby allowing separation of the female and male portions.