초록 ▼

A pressurized gas spring, which exerts an expulsion force on the piston rod entailing a maximum extension velocity of the piston rod, includes braking means effective at a velocity of motion due to external forces above the maximum extension velocity for limiting the velocity of motion to a desired

A pressurized gas spring, which exerts an expulsion force on the piston rod entailing a maximum extension velocity of the piston rod, includes braking means effective at a velocity of motion due to external forces above the maximum extension velocity for limiting the velocity of motion to a desired measure.

대표청구항 ▼

[ We claim:] [1.] A gas spring comprising:a cylinder having a closed end and an open end;a piston rod extending into said cylinder through said open end in sealing relationship thereto for axial movement relative to said cylinder;a piston carried by said piston rod having at least one throughflow pa

[ We claim:] [1.] A gas spring comprising:a cylinder having a closed end and an open end;a piston rod extending into said cylinder through said open end in sealing relationship thereto for axial movement relative to said cylinder;a piston carried by said piston rod having at least one throughflow passage therein, said piston being sealingly guided in said cylinder for axial movement relative thereto and dividing said cylinder into first and second working chambers communicating by way of said at least one throughflow passage, said first working chamber containing said closed end of said cylinder and said second working chamber containing said open end of said cylinder;a gas under pressure in said cylinder, said gas pressure in said first working chamber exerting an expulsion force on said piston rod; andmeans for braking the velocity of said piston in a direction toward said open end, effective at a defined velocity of motion of said piston, by restricting the rate of gas flow between said first and second working chambers through said at least one throughflow passage.