Patent ID: 7287626
Filing Date: 2007-10-30
Classification: B66B

Abstract:
1. A buffer device for an elevator apparatus, comprising: a hydraulic buffer that alleviates shock generated when a traveling body of the elevator apparatus impacts the hydraulic buffer, the hydraulic buffer including a cylinder, a plunger at least partially within the cylinder and reciprocating along an axial direction of the cylinder, and a return spring having upper and lower ends and urging the plunger along the axial direction, outward from the cylinder, the upper end of the return spring being directed toward the plunger and the lower end being directed toward the cylinder; and an elastic member located between the traveling body of the elevator apparatus and the bottom of a hoistway in which the traveling body of the elevator apparatus moves, to alleviate shock generated by impact of the traveling body of the elevator apparatus with the hydraulic buffer, wherein