Patent ID: 8485714
Filing Date: 2013-07-16
Classification: B29B,F16N

Abstract:
1. A sealed mixer, comprising: a housing provided with a mixing chamber and a material insertion port for inserting materials into the mixing chamber; a weight for pressing the materials inserted into the material insertion port toward the mixing chamber; a shaft member which extends upward from the weight and moves upward and downward together with the weight, the weight being connected to a lower end portion of the shaft member; and a pair of mixing rotors which rotate in the mixing chamber to mix the materials; wherein a reservoir adapted to store lubricant between the weight and the shaft member is formed at a part connecting the weight and the shaft member, a lubricant supply path adapted to supply the lubricant from an outside toward the reservoir is formed in the shaft member, the weight has a recess with an opened upper end and a closed lower end, and the weight and the shaft member are interconnected while a lower end portion of the shaft member is inserted into the recess through the opened upper end and located in the recess with a clearance between the inner surface of the recess and the outer surface of the lower end portion of the shaft member, the clearance constituting at least a part of the reservoir.