G - Physics – 06 – M
Patent
G - Physics
06
M
235/104, 235/98
G06M 1/02 (2006.01) F16C 33/20 (2006.01)
Patent
CA 1248071
ABSTRACT OF THE DISCLOSURE: A digital mechanical counter comprises at least two rotative display drums which are coaxial and driven at different speed of rotation pivoted on a frame. Each drum is carried by a shaft pivoted on the frame by means of an autolubricating bearing comprising a brass body provided with a central through passage presenting a first cylindrical surface in which a disc in natural or synthetical hard stone is driven in a second cylindrical surface, of greater diameter than the first one, in which a steel ring is driven which is provided with a central hole having a diameter less than the one of the first cylindrical surface and one of the annular faces of which is in contact with one of the faces of the disc in hard stone. A cylindrical part in synthetical resin is fixed into the steel ring, this part presenting an internal medium cylindrical surface intended to receive a pivot and two conical surfaces widening from the medium cylindrical surface towards the frontal surfaces of this part defining thus a central void presenting in longitudinal cross section the general shape of a diabolo. The frontal internal face of the part in synthetical resin is in contact with the face of the hard stone disc which is itself in contact with the steel ring.
489064
Robic Robic & Associes/associates
Sarcem S.a.
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