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Browse Prior Art Database

Safety Can

IP.com Disclosure Number: IPCOM000078101D
Original Publication Date: 1972-Nov-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Guschmann, MA: AUTHOR

Abstract

Lever 4 for operating cap 3 is shiftably supported in handle 1 of can 2, and fixedly connected to guide bushing 5 which can be longitudinally shifted in a direction opposite to the force of compression spring 6 supported therein. The free end of this guide bushing 5 carries roller 7 resting on plane 8, which is inclined with respect to the shifting path of the guide bushing and forms part of linkage element 9 pivotable about a fixed point. Linkage element 9 is pivotably connected to cap 3 of can 2 and has a hook portion 10 at one end of its inclined plane 8.

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Safety Can

Lever 4 for operating cap 3 is shiftably supported in handle 1 of can 2, and fixedly connected to guide bushing 5 which can be longitudinally shifted in a direction opposite to the force of compression spring 6 supported therein. The free end of this guide bushing 5 carries roller 7 resting on plane 8, which is inclined with respect to the shifting path of the guide bushing and forms part of linkage element 9 pivotable about a fixed point. Linkage element 9 is pivotably connected to cap 3 of can 2 and has a hook portion 10 at one end of its inclined plane 8.

By shifting handle 4 in a direction opposite to the force of compression spring 6, cap 3 can be lifted from its seat closing can 2. The lifting is performed when roller 7 engages with hook 10 and the linkage element 9 is rotated about its pivot and thus lifts cap 3 from its seat.

Should an excess pressure develop in can 2 this, too, can be relieved by lifting cap 3 from its seat. Here, inclined plane 8 acts on roller 7 of guide bushing 5 so that compression spring 6 is compressed. Inclined plane 8 has the effect that the force required for compressing spring 6 can be lowered by level 4, and this low-spring pressure is sufficient to permit cap 3 to lift from its seat before the pressure inside the can exceeds a predetermined value.

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