Haldex Ab

Rune Sund

Sven Wallqvist

Sven Wallquist

A control device for an instrument (10) attached to a vehicle wheel hub for recording the distance covered by the vehicle comprises a counting mechanism with several number-carrying wheels (25), a stamping mechanism (29,30) for stamping cards, a means (14) for advancing the number-carrying wheels of the counting mechanism in response to the distance covered, and a pendulum, the oscillation axis of which coincides with the vehicle wheel axle, and which by substantially standing still effects a relative movement in relation to the recording instrument. This movement is utilized for driving the means for advancing the number-carrying wheels of the counting mechanism via a gear unit (12). The means for advancing the number-carrying wheels of the counting mechanism comprise a feed hook (14), which is deformed permanently when number-carrying wheels of the counting mechanism are blocked, and thereby effects permanent closing of a first electric contact (14b-34). A movable member (18) in the gear unit (12) is provided with at least one signal shoulder (49), which is capable upon movement transfer of the gear unit to alternatingly open and close a second electric contact (33-34). Furthermore, an element (34,35) of the electric contacts is provided for scanning the condition of the electric contacts in order to render possible rapid observation, whether the recording instrument operates in the way intended.

Control device for recording distance measuring instrument attached to a

An overflow return tank, especially for receiving return fuel at internal combustion engines with fuel gauge, comprising a receptacle (20, 21, 22) with an inlet (23) located upwardly for a return flow and an outlet (25) and an air bleed hole (24), and with a float (30) located within the receptacle for controlling a valve (26, 36, 31a) located at the outlet of the receptacle. The valve comprises a soft, elastic diaphragm (36), which is connected to the float (30) and upon lifting of the float gradually exposes the outlet (25) by being bent, so that fuel can be taken out from the overflow return tank. Owing to the design of the valve only a small lifting force from the float is required, whereby the fuel amount in the overflow return tank can be maintained substantially constant even at great variations in the return flow. The overflow return tank, besides, can be given small dimensions. The overflow return tank further is provided with a member (44) to separate gas bubbles from the incoming return flow before the fuel again is discharged from the overflow return tank. Said member may be a pipe of fabric, through the walls of which the return flow can pass (FIG. 2).

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Halmstad, Sweden

Rune Sund