Title:
PISUTON OYOBI SHIRINDAOSONAETASOCHI
Document Type and Number:
Japanese Patent JPS5195577
Kind Code:
A
Abstract:
An axially expandable and contractable cylinder and piston assembly is provided with an internal axially back and forth movable guide ring for the piston. Helical teeth or thread means at the outer periphery of the guide ring mesh with complementary helical teeth or thread means at the inner periphery of the piston, and helical teeth or thread means at the inner periphery of the guide ring are slanted oppositely to its outer helical teeth or thread means and mesh with complementary helical teeth or thread means on the cylinder.
Application Number:
JP4273675A
Publication Date:
August 21, 1976
Filing Date:
April 08, 1975
Export Citation:
International Classes:
F15B15/14; E04G23/08; E21C37/08; F15B15/08; F16J10/02; (IPC1-7): F15B15/14