Sealing mechanism
AssigneeWipotec Wiege- und Positioniersysteme GmbH
InventorsTimo Hauck, Bernd Zinke
Life of this patent
Estimating the term…
Abstract
The invention relates to a sealing mechanism for a scale, in which a connection element connected to a moving lifting element seals or opens an annular gap, wherein, for an opened annular gap, the connection element and lifting element form a biasing load for the weighing sensor of the scale.
Claims20
A sealing mechanism for a scale in which, in a housing there is a weighing sensor that can be loaded with a weight force to be measured by means of a rod-shaped load receiver projecting outward through a housing opening, wherein the rod-shaped load receiver carries, on its free end, a plate-shaped load element for supporting goods to be weighed, the sealing mechanism comprising:
- a) a lifting element that can move relative to the rod-shaped load receiver and that can be moved between a working position in which the lifting element forms a seal of the housing opening and a rest position in which the housing opening is not sealed;
- b) wherein the lifting element is connected to the load element or to the load receiver as a biasing load in the rest position.
A scale comprising:
- a housing holding a weighing sensor that can be loaded with a weight force to be measured by means of a rod-shaped load receiver projecting outward through a housing opening, wherein the rod-shaped load receiver carries, on an upper end, a plate-shaped load element for supporting goods to be weighed,
- a sealing mechanism comprising:
- (a) a lifting element including a tubular form extending through the housing opening and through which the rod-shaped load receiver passes, and an upper flange,
- (i) the lifting element adapted to be moved relative to the rod-shaped load receiver;
- (ii) the lifting element adapted to be moved relative to the housing;
- (iii) the lifting element adapted to be moved between a working position, in which the lifting element upper flange presses downward toward the housing to create a seal of the housing opening from above the housing, and a rest position in which the housing opening is not sealed;
- and
- (iv) wherein the lifting element is connected to the load element or to the load receiver as a biasing load in the rest position;
- and
- (b) an annular sealing element constructed as an O-ring positioned between the lifting element upper flange and the housing, the annular sealing element adapted to be compressed downward beneath the lifting element upper flange to create the seal in the working position.
Dependencies are inferred from the claim text.