Laminar flow connector for conduits

• US 4,076,285 A
• Filed: 08/01/1975
• Issued: 02/28/1978
• Est. Priority Date: 08/01/1975
• Status: Expired due to Term

• Current Assignee: Erika Incorporated
• Original Assignee: Erika Incorporated
• Inventors: Martinez, Felix Jesus
• Primary Examiner(s): Arola, Dave W.
• Application Number:
  US05/600,962
• Time in Patent Office: 942 Days
• Field of Search: 285/331, 285/332, 285/360, 285/361, 285/376, 285/391, 285/396, 285/401, 285/402, 285/423, 285/332.1, 285/332.2, 285/333.3, 285/332.4, 285/334.4 , 285/DIG. 16
• US Class Current: 285/332
• CPC Class Codes: F16L 37/252 the male part having lugs on its periphery penetrating in the corresponding slots provided in the female part
• CPC Class Codes: Y10S 285/915 Mastic
• CPC Class Codes: Y10S 604/905 Aseptic connectors or couplings, e.g. frangible, piercable

Abstract

A laminar flow connector for conduits including a first element having a portion for receiving a first conduit and a hollow tapered member having one end in open communication with the end of the first conduit and continuously tapering away from the first conduit toward its other end, a second element having a portion for receiving a second conduit and a mating tapered channel for receiving the hollow tapered member therein and having one end in open communication with the second conduit, and interlocking members which coact to provide a hermetic seal between the elements and enable a fluid to flow from one conduit to the other without encountering any discontinuities in the flow path. Advantageously, the interlocking members include mating pairs of spaced ramped projections capable of advancing the elements toward each other and providing a hermetic seal therebetween when the hollow tapered member is fully inserted into the mating tapered channel and the elements are rotated relative to one another.

Claims

1. A laminar flow connector for coupling first and second conduits to provide a hermetic seal therebetween, comprising:

a male member in the shape of a stepped cylinder having a reduced diameter portion and enlarged diameter portion separated by an annular wall, said reduced diameter portion being dimensioned to receive a first conduit therein with the end of the first conduit abutting against said annular wall, a truncated conical member centrally arranged within said enlarged diameter portion and coupled to said annular wall at its base, said member having an inner and an outer surface, said inner surface being in open communication with said reduced diameter portion and said outer surface having a continuous taper toward its apex, said first conduit and member inner surface being so constructed and arranged to provide laminar flow of a fluid therethrough, and a pair of projections on the inside surface of said enlarged diameter portion, said projections extending radially inwardly therefrom and being spaced from said annular wall to form a pair of receiving slots; and

a female member in the shape of a cylinder having an end portion with a recess with an annular stop, said recess being dimensioned to receive a second conduit therein with the end of the second conduit abutting against the annular stop and a mating tapered channel in open communication with said recess and having its largest diameter portion at the other end remote from said end portion, and a pair of mating tabs coupled to the other end of said female member remote from said end portion, said mating tabs being received within said slots upon full insertion of said male member into said female member and relative rotation of said members, said projections and said tabs coacting to provide a wedge-fit therebetween and a continuous hermetic seal between said truncated conical member and mating tapered channel and the apex end of said conical member is presented in smooth continuous flow relationship with the end of said second conduit, whereby a laminar flow path is created between the conduits through said truncated conical member.

2. The laminar flow connector recited in claim 1, wherein:

the lumen of the first conduit meets the inner surface of said truncated conical member in substantially the same plane;

the lumen of the second conduit meets the inner surface of said truncated conical member in substantially the same plane and said apex of said truncated conical member abuts against the end of the second conduit when said elements are coupled.

3. The laminar flow connector recited in claim 1, wherein:

said projections of said male member are canted in opposite directions relative to said annular wall to provide openings for said slots at the opposite ends thereof;

each of said pair of mating tabs of said female member being inclined to be received within one of said slots to provide a wedge-fit therein.

4. The laminar flow connector recited in claim 3, wherein:

said tabs of said female member extend radially outward at said other end of said mating tapered channel and have their rear surfaces inclined in opposite directions relative to said other end.