Rotary opener and closer for screws, screw closures on bottles,

Tools – Receptacle closure remover – Gripping type

Patent

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Details

B67B 718

Patent

active

049413732

ABSTRACT:
A rotary opener and closer for screws and in particular for screw closures on jars, bottles, etc. is described having two converging side walls perpendicular to the rotary plane in the use position and which are interconnected at the ends where they have their maximum spacing by an approximately semicircular side wall. To the inside of one side wall, preferably adjacent to the end remote from the semicircular side wall, is fixed a spring steel strip with a roughened surface. This spring steel strip engages internally on said side wall, on the connected semicircular side wall and on the opposite side wall. This provides a large area for gripping the screw closure to be opened, so that it is not excessively stressed and therefore damaged at one point. Taking account of the opening direction R, a fixing point is to be positioned to hold the steel strip in such a way that the spring steel strip is tensile stressed both on opening and closing, i.e. the rotary opener and closer must be correspondingly rotated by 180.degree., if it is to be transformed from an opener to a closer.

REFERENCES:
patent: 1707804 (1929-04-01), Haase
patent: 1853735 (1932-04-01), Lawler
patent: 3084573 (1963-04-01), Lipski
patent: 3143904 (1964-08-01), Yerkes
patent: 3736817 (1973-06-01), Huff
patent: 3760657 (1973-09-01), Muir et al.

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