US 7,320,484 B2
Plug-in safety coupling
Albrecht Wuthrich, Buholzstrasse, 6110 Wolhusen (Switzerland)
Appl. No. 10/469,659
PCT Filed Feb. 13, 2002, PCT No. PCT/CH02/00085
§ 371(c)(1), (2), (4) Date Feb. 03, 2004,
PCT Pub. No. WO02/070941, PCT Pub. Date Sep. 12, 2002.
Claims priority of application No. 0381/01 (CH), filed on Mar. 01, 2001.
Prior Publication US 2004/0239111 A1, Dec. 02, 2004
Int. Cl. F16L 27/00 (2006.01); F16L 27/04 (2006.01); F16L 29/00 (2006.01); F16K 51/00 (2006.01)
U.S. Cl. 285—184  [285/263; 285/271; 285/276; 251/89.5; 251/148; 251/352] 30 Claims
OG exemplary drawing
 
1. A plug-in safety coupling for pressurized conduits, comprising:
a coupling plug;
a coupling housing including a compressed air feed bore, and a recess forming a pivot path; and
a blocking element including a through-bore in which the coupling plug may be introduced in a sealing manner, the blocking element sealingly mounted in the coupling housing;
wherein the pivot path of the coupling housing permits the coupling plug, being introduced into the blocking element, to pivot relative to the coupling housing such that the blocking element may be brought from a conducting position, in which the through-bore of the blocking element communicates with the compressed air feed bore of the coupling housing, into a blocking position, in which the blocking element blocks the compressed air feed bore; and
the blocking element and the coupling plug each include reciprocally corresponding locking means to effect a locked retention of the coupling plug in the blocking element.