초록 ▼

A mechanism for selectively securing a cover to a flange of a pressure vessel. The cover and flange each have openings that are aligned when the cover is in position facing the flange. The mechanism includes an anchor plate having a hole therethrough. A piston is slidable in a direction normal to th

A mechanism for selectively securing a cover to a flange of a pressure vessel. The cover and flange each have openings that are aligned when the cover is in position facing the flange. The mechanism includes an anchor plate having a hole therethrough. A piston is slidable in a direction normal to the cover in alignment with the opening therethrough. A stud extends from to the piston with a stud head remote from the piston. The stud head fits through the opening of the closer of the cover and flange and through a wider portion of the anchor plate hole, and is positioned opposite the flange and cover from the piston when the cover is positioned over the flange. The stud head does not fit through a narrower portion of the anchor plate hole. A resilient member biases the piston away from the cover. A selectively activated actuator overcomes the resilient member and forces the stud head away from the flange and the anchor plate. The anchor plate moves between (i) a locking position, in which the narrower portion of the hole is aligned with the openings so that the resilient member can bias the stud head against the anchor plate, and (ii) an unlocked position, in which the wider portion of the hole is aligned with the openings so that the resilient member can bias the stud head into the enlarged portion of the anchor plate hole.

대표청구항 ▼

[ We claim:] [1.] A mechanism for selectively securing a cover to a flange of a pressure vessel, the cover and flange each having at least one opening therethrough, the openings being aligned when the cover is positioned facing the flange, the mechanism comprising:an anchor plate movably supported a

[ We claim:] [1.] A mechanism for selectively securing a cover to a flange of a pressure vessel, the cover and flange each having at least one opening therethrough, the openings being aligned when the cover is positioned facing the flange, the mechanism comprising:an anchor plate movably supported adjacent to one of the cover and flange, the anchor plate having a hole therethrough, the hole having a wider portion and a narrower portion, the anchor plate being movable between a first position, in which the narrower portion of the hole is aligned with the openings of the cover and the flange, and a second position, in which the wider portion of the hole is aligned with the openings of the cover and the flange;at least one piston secured to the other of the cover and flange so as to be slidable in a direction normal to the other of the cover and flange in alignment with the opening therethrough;a stud extending from the piston and having a stud head remote from the piston so that the stud head is positioned on an opposite side of the flange and the cover from the piston when the cover is positioned facing the flange, the stud head being sized to fit longitudinally through the opening of at least the one of the cover and flange and through the wider portion of the hole of the anchor plate, the stud head being sized not to fit longitudinally through the narrower portion of the hole of the anchor plate;a resilient member biasing the piston away from the other of the cover and flange so as to bias the stud head toward the one of the cover and flange;a selectively activated actuator for overcoming the bias of the resilient member and forcing the piston toward the other of the cover and flange so that the stud head is moved away from the one of the cover and flange and the anchor plate; andpositioning means for selectively moving the anchor plate between the first position, in which deactivating the actuator permits the resilient member to bias the stud head against the anchor plate to clamp the cover and flange together, and the second position, in which deactivating the actuator permits the resilient member to bias the stud head into the wider portion of the anchor plate hole so that the cover and flange can be separated by passing the stud head through the opening of the one of the cover and flange.