Piston and cylinder assembly
AssigneeFa. Werner Looser, Maschinenbau
InventorHeinz Lampert
Life of this patent
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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.
Claims6
The combination of a cylinder component, a piston component axially reciprocable within said cylinder component, and a cylindrical guide ring operatively interposed between said cylinder and piston components, said guide ring being provided at its inner and outer peripheries with oppositely slanted thread means meshing respectively with complementary thread means on said cylinder and piston components.
Dependencies are inferred from the claim text.