公开(公告)号：US4136403A

公开(公告)日：1979-01-30

申请号：US831133

申请日：1977-09-07

Applicant: Hans J. Walther ,  Manfred Gdulla

Inventor： Hans J. Walther ,  Manfred Gdulla

IPC: A42B3/04 ,  A42B3/28 ,  A62B18/08 ,  A42B3/00

CPC classification number: A42B3/288 ,  A62B18/084

Abstract: A head guard assembly comprises a protective head helmet, with a face protective breathing mask coupled to the helmet by interengagement of a coupling pin carried on each side of the face mask with a socket member carried on each side of the protective helmet. The socket member includes a bore which is tapered outwardly in a funnel-shape and is of oval configuration so as to conform close to the inside of the helmet side flaps. It has an interior widened portion in the bore forming catch grooves which are engaged by ball members which are carried in the recess of the coupling member and are biased by a spring into outward engagement with the catch groove when the coupling pin is inserted. The coupling pin includes an uncoupling member which moves against the balls to cause them to be pressed into the recess of the member to permit withdrawal of the mask from the helmet. The socket member is mounted on the helmet by means of a slide which may be slid in directions toward and away from the coupling pin and locked in an adjusted position in order to regulate the interfitting of the mask with the helmet.

Abstract translation: 保护头组件包括防护头盔，其具有与头盔相连接的面部防护呼吸面罩，所述面罩与所述面罩每侧承载的连接销相互接合，并在所述保护头盔的每一侧承载承窝构件。 插座构件包括以漏斗形状向外锥形的椭圆形构造的孔，以使其靠近头盔侧翼的内侧。 在孔的内部加宽部分形成有凹槽，该凹槽由球形构件接合，球形构件被承载在联接构件的凹部中并且当连接销被插入时由弹簧偏压与止动槽向外接合。 联接销包括一个脱离构件，该联接构件相对于球移动，使得它们被压入构件的凹部中，以允许面罩从头盔上撤出。 插座构件通过滑动件安装在头盔上，该滑动件可沿着朝向和远离联接销的方向滑动并锁定在调节位置，以便调节面罩与头盔的配合。

公开(公告)号：US4111197A

公开(公告)日：1978-09-05

申请号：US770371

申请日：1977-02-22

Applicant: Ernst Warncke ,  Manfred Gdulla

Inventor： Ernst Warncke ,  Manfred Gdulla

IPC: F16L21/08 ,  A62B9/04 ,  F16L37/088 ,  F16L37/14 ,  A62B7/00

CPC classification number: A62B9/04 ,  F16L37/088

Abstract: A respiratory device coupling construction comprises a device which is used for respiration and which contains a cylindrical receiving recess for a connection such as a breathing gas connection. The connection or coupling includes a connector for a conduit of the gas which has a tubular portion which is insertable into the receiving recess. A tubular cover member overlies the cylindrical receiving portion and has a slot therethrough. A U-shaped locking spring has a web portion with an actuating part which is displaceably positionable in the slot so as to project from the cover member for engagement by a person's hand. The U-shaped locking spring includes two leg portions which straddle the tubular portion. Respective legs engage in respective slots on diametrically opposite sides of the tubular portion of the connecting device and the ends of these legs engage against a camming surface defined at the edge of the slot on the tubular portion. When the actuating part is depressed by a person's hand, the cam springs the leg portions outwardly to release the tubular portion for disconnection. When the actuating part is released, the leg portions spring into the slots and hold the tubular portion in the cylindrical receiving recess.