US 4,775,173 AGranted

Hose coupling

AssigneeRasmussen GmbH

InventorHeinz Sauer

Life of this patent

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Abstract

A hose coupling wherein the end portion of a pipe is sealingly but separably connected with the end portion of a deformable hose by a tubular connector which has a first section sealingly fitted into the end portion of the pipe and a second section preferably sealingly attached to the end portion of the hose. The second section can abut against the end face of the end portion of the hose or it can surround or extend into such end portion. The connector carries one or more pivotable latching devices with pallets which engage a portion of the external surface of the end portion of the pipe or portions of surfaces bounding openings in the end portion of the pipe. A sealing element in the form of an O-ring or a sleeve is inserted between the internal surface of the end portion of the pipe and the external surface of the respective section of the connector to ensure that the seal between the connector and the pipe remains intact even if one of these parts moves axially relative to the other part. The connector shares all axial movements of the end portion of the hose and is separably connected thereto by mechanical means or is permanently bonded to the hose. The pallet or pallets of the latching device or devices can pivot in planes which include the axis of the coupling.

Claims10

Dependent claims

A coupling comprising a pipe having a first end portion and an external surface provided with a retaining portion;

a hose having a second end portion and an external surface;
a tubular connector having a first section surrounded by said first end portion and a second section in sealing engagement with said second end portion, said second section being arranged to share axial movements of said second end portion;
a sealing element interposed between said first section and said first end portion to establish and maintain a fluidtight seal therebetween while permitting at least some axial movement of said first end portion and said first section relative to each other;
and at least one latching device for releasably locking said connector to said pipe, said latching device being accessible for manipulation at the exterior of said end portions and including an elastic substantially web-like first portion integral with said connector, said latching device further including a second portion engageable with and disengageable from the retaining portion of said pipe in response to deformation of said first portion, and a third portion which is movable with reference to said connector to deform said first portion, said third portion being spaced apart from the external surface of said hose in the radial direction of the hose when said second portion engages the retaining portion of the pipe and said third portion being located radially outwardly of the second section of said connector, said second end portion being vulcanized to the second section of said connector adjacent the first portion of said latching device.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 07/064,065Filed 18 Jun 1987 · division
Priority: DE 340190220 Jan 1984
Granted: 4 Oct 1988
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

F16L 37/0847
Combined with automatic locking: by means of hooks
F16L 33/221
With means not mentioned in the preceding groups for gripping the hose between inner and outer parts: the external piece comprising segments…
F16L 37/084
In which the connection between abutting or axially overlapping ends is maintained by locking members: combined with automatic locking
F16L 37/0985
By means of flexible hooks: the flexible hook extending radially inwardly from an outer part and engaging a bead, recess or the like on an inner part