Abstract: An electronic lock device configured to be externally mounted on a building door is provided, and being configured to operate a lock by moving a lock bolt of an associated lock case between a retracted position and a protruded position. The device includes an electrical motor and a transmission for connecting said electrical motor to the associated lock case. The transmission includes a rotatable shaft configured to be connected to a lock follower of the lock case, and a rotatable member being drivingly connected to the electrical motor and being connected to an engagement member being allowed to pivot upon rotation of the rotatable member, such that the engagement member is engaging with the rotatable shaft when the electrical motor is driving the rotatable member.

Abstract: An electronic lock device (100) configured to be externally mounted on a building door (1) is provided, and being configured to operate a lock (10) by moving a lock bolt (22) of an associated lock case (20) between a retracted position and a protruded position. The device comprises an electrical motor (120) and a transmission (130) for connecting said electrical motor (120) to the associated lock case (20). The transmission (130) comprises a rotatable shaft (140) configured to be connected to a lock follower of the lock case (20), and a rotatable member (150) being drivingly connected to the electrical motor (120) and being connected to an engagement member (170) being allowed to pivot upon rotation of the rotatable member (150), such that the engagement member (170) is engaging with the rotatable shaft (140) when the electrical motor (120) is driving the rotatable member (150).

Abstract: A device for generating an electric output signal in response to the positioning of a mechanical member. The mechanical member carries an optical fibre, and the optical fibre coacts with one of several, preferably two, phototransistors in response to the setting position of the mechanical member. The phototransistors are connected to an amplifier generating the electric output signal corresponding to the member's position.The device may be used in control equipment for controlling the draught in a boiler, preferably an oil-fired boiler.

Abstract: A coupling arrangement between a shaft and a knob adapted for rotating the shaft, the knob being provided with a recess having a cross-sectional area which is substantially greater than the cross-sectional area of the shaft, and having a sleeve arranged to encircle the shaft with its inner surface and with its outer surface intended to be encircled by the recess in the knob. The outer surface of the sleeve has a cross-sectional area which is somewhat larger than the cross-sectional area of the recess of the knob. The knob is pressed over the sleeve and as a result of its elasticity imparts to the sleeve a compressing force which acts on the shaft and thereby presses the sleeve and the knob into firm, co-action with the shaft.