Coupling for self-contained breathing apparatus
First Claim
1. A socket for receiving a plug of a fluid coupling comprising:
- a base body having a passage channel therein;
a guide-sleeve arrangement anchored in the base body and arranged in an extension of the passage channel, the guide-sleeve arrangement having an insertion end that is set apart from the base body;
a plunger located in the guide sleeve arrangement and extending up to adjacent the insertion end of the guide sleeve arrangement, the plunger carrying a head adjacent the insertion end of the guide sleeve arrangement, the plunger and the guide sleeve arrangement defining an annular space in fluid communication with the passage channel;
a closing sleeve arranged in the annular space between the guide sleeve arrangement and the plunger, the closing sleeve being longitudinally movable between a work position and a rest position, wherein in the rest position the closing sleeve largely closes a portion of the annular space between the guide-sleeve arrangement and the head of the plunger without sealing the annular space;
a biasing element for biasing the closing sleeve into the rest position;
a locking device for a plug inserted into the socket; and
a throttling device that enables the passage channel to vent to an outer atmosphere when the plug has been removed from the socket, wherein the throttling device comprises a bevel on the plunger head which provides a gap on a portion of the interface between a coupling sleeve and the plunger.
3 Assignments
0 Petitions
Accused Products
Abstract
A socket part actuated without pressure for a fluid coupling is provided with a mechanism for mechanically sealing, to a large extent, the insertion space of a plug against the penetration of foreign matter. In addition, a throttling device is provided, which practically does not obstruct the fluid connection for an inserted plug, while a high flow resistance is produced for a plug that has been pulled out, without, however, completely blocking the flow path. The associated plug also has a sealing device in order to protect the flow channel against the penetration of particles when the plug is removed. In case the plug is connected to a compressed-air tank, this is provided with a throttling device, which practically does not obstruct flow for an inserted plug, but forms considerable flow resistance for a removed plug without completely blocking the flow.
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Citations
46 Claims
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1. A socket for receiving a plug of a fluid coupling comprising:
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a base body having a passage channel therein; a guide-sleeve arrangement anchored in the base body and arranged in an extension of the passage channel, the guide-sleeve arrangement having an insertion end that is set apart from the base body; a plunger located in the guide sleeve arrangement and extending up to adjacent the insertion end of the guide sleeve arrangement, the plunger carrying a head adjacent the insertion end of the guide sleeve arrangement, the plunger and the guide sleeve arrangement defining an annular space in fluid communication with the passage channel; a closing sleeve arranged in the annular space between the guide sleeve arrangement and the plunger, the closing sleeve being longitudinally movable between a work position and a rest position, wherein in the rest position the closing sleeve largely closes a portion of the annular space between the guide-sleeve arrangement and the head of the plunger without sealing the annular space; a biasing element for biasing the closing sleeve into the rest position; a locking device for a plug inserted into the socket; and a throttling device that enables the passage channel to vent to an outer atmosphere when the plug has been removed from the socket, wherein the throttling device comprises a bevel on the plunger head which provides a gap on a portion of the interface between a coupling sleeve and the plunger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A socket for receiving a plug of a fluid coupling comprising:
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a base body having a passage channel therein; a guide sleeve arrangement anchored in the base body and arranged in the extension of the passage channel, the guide sleeve arrangement having an insertion end set apart from the base body; a plunger arranged in the guide-sleeve arrangement and extending up to adjacent the insertion end of the guide sleeve arrangement, the plunger carrying a head adjacent the insertion end of the guide sleeve arrangement, the plunger and the guide-sleeve arrangement defining an annular space in fluid communication with the passage channel; and holding elements which are guided into openings in the guide-sleeve arrangement; a locking sleeve movable in a longitudinal and a circumferential direction between a locked position and a released position; a biasing spring for biasing the locking sleeve in the locked position and in a rotated position, a throttling device that enables the passage channel to vent to an outer atmosphere when the plug has been removed from the socket, wherein the throttling device comprises a bevel on the plunger head which provides a gap on a portion of the interface between a coupling sleeve and the plunger. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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Specification