Abstract

A surface-mounted keylessly operated lock (10) comprises a chassis (11) mountable on one of two parts, especially a door and a door surround, to be locked and unlocked relative to one another and carrying locking means (17 to 23) transferrable between a locking state and an unlocking state respectively for the locking and unlocking, the locking means being electrically operable to cause or allow transfer from the locking state to the unlocking state. In addition, the lock includes a control module (16) mounted on the chassis (11) and carrying control means (30) for controlling supply of electrical operating power to the locking means. The chassis has a receptacle (25) for reception of an electrical energy source, especially batteries, for providing the operating power and the module (16) inclusive of the control means (20) is movable relative to the chassis (11) to permit access to the receptacle (25) to enable battery exchange without demounting of the installed lock.

IPC Classes  ?

• E05B 47/06 - Controlling mechanically-operated bolts by electromagnetically-operated detents
• E05C 3/04 - Fastening devices with bolts moving pivotally or rotatively without latching action with operating handle or equivalent member rigid with the bolt

Abstract

A lock (10) comprises a housing (11 ) defining a mounting face (12), a locking mechanism (21 ) accommodated in the housing (11 ) and operable to change between a locking state and a release state and a set of operating elements (25) with buttons (26) accessible at the front of the housing and actuable, such as by axial displacement, to operate the locking mechanism (21). The locking mechanism (21 ) can be changed from the locking state to the release state in response to actuation of, and only of, a selected group of the operating elements (25). These elements can additionally be manipulated, in particular rotated, to select the group. The buttons of the selected group can be identified by respectively associated digits forming a code. The lock further comprises a slidable blocking plate (31) blocking the rotation of the operating elements (25) and cancelling means (36 - 38) operable to cancel the blocking by the plate (31). The cancelling means includes a key barrel (37) accessible for operation externally of the housing (11) at a place, in particular the front of the housing, separate from the mounting face. Operation of the key barrel (37) thus has the consequence of freeing the buttons (26) for rotation to change the code.

IPC Classes  ?

• E05B 37/16 - Permutation locksPuzzle locks with two or more push or pull knobs, slides, or the like