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US 5,307,657 AGranted
Permutation lock, in particular for trunks pieces of furniture or the like
AssigneeS. Franzen Sohne (GmbH & Co.)
InventorsHelmut Klein, Jurgen Sersch
Life of this patent
Estimating the term…
Abstract
A permutation lock, in particular for suitcases or the like, having a plurality of number disks (12) which can be turned by rotation into the combination opening position and an operating handle upon the opening displacement of which the combination set is changed. In order to obtain a simple solution which is advantageous in use, each number disk (12) has associated with it a cam (45) which turns the number disk into a given basic position other than the combination upon displacement of the operating handle (35).
Claims30
A permutation lock, particularly for an enclosure comprising:
- a plurality of number of disks which can be brought by rotation into a combination opening position;
- a rotation axle, a plurality of spring tongues, a plurality of blocking sleeves, a window slide, an operating handle, and a plurality of cams with cam curves provided for corresponding ones of the number disks;
- wherein said disks are arranged on said rotation axle and are engaged by respective ones of said spring tongues;
- said blocking sleeves are operatively coupled to corresponding ones of said disks and have flats formed of flat surfaces, said window slide being located opposite the flat surfaces and having bars which are displaceable via movement in a direction parallel to said rotation axle, said handle serving to displace said slide only upon the occurrence of the combination opening position of the disks of the lock;
- the cam curves of the respective number disks, as a result of action upon the cam curves by displacement of the operating handle then turn the number disks into a set of given basic positions, which differ from the positions of the respective disks in said combination opening position;
- and
- bars at the center of the window slide are developed as flap bridges and are spring-urged into blocking position, the center bars moving beyond the flat surfaces of said sleeves against spring load upon displacement of the window slide.
4 more elements
A permutation lock comprising:
- a plurality of number disks and a shaft for supporting said disks for rotation about an axis of said shaft;
- a window slide having a window exposing said disks for viewing, and a handle extending from said window slide to permit manual translation of said window slide in a plane parallel to said shaft, said handle being operative to translate said window slide only upon the occurrence of a lock combination open position set by said number disks;
- a plurality of cams operatively coupled to respective ones of said disks;
- wherein, upon operation of said handle to open the lock, said window slide urges said cams to rotate said disks into a set of basic positions which differ from the positions of the respective disks in the open position of the lock combination;
- said window slide has central bars for contacting said disks during a transverse movement of said window slide;
- the number disks have blocking sleeves with flats associated with them;
- and
- the central bars of the window slide are formed as flap bridges which have control bevels lying in a direction of return travel of the window slide and are spring-loaded in a blocking direction for movement past the flats.
5 more elements
A permutation lock comprising:
- a plurality of number disks and a shaft for supporting said disks for rotation about an axis of said shaft;
- a window slide having a window exposing said disks for viewing, and a handle extending from said window slide to permit manual translation of said window slide in a plane parallel to said shaft, said handle being operative to translate said window slide only upon the occurrence of a lock combination open position set by said number disks;
- a plurality of cams operatively coupled to respective ones of said disks, and a second slide;
- a plurality of blocking sleeves operatively coupled to corresponding ones of said disks and having flats formed of flat surfaces;
- wherein, upon operation of said handle to open the lock, said window slide urges said cams via said second slide to rotate said disks into a set of basic positions which differs from the positions of the respective disks in the open position of the lock combination;
- a set of pins for slideably engaging said second slide with said window slide via an idle stroke during initial movement of said window slide for resetting positions of said disks, said window slide having central bars for engaging said disks during a transverse movement of said window slide;
- and
- said central bars are developed as flap bridges and are spring-urged into a blocking position, the central bars moving out beyond the flat surfaces of said sleeves against spring load upon displacement of the window slide.
5 more elements
Dependencies are inferred from the claim text.