Two cylinder shock absorber system

A shock absorber system, which comprises:

• a. an outer cylinder having a top closure and a ported bottom closure;
• b. an inner cylinder spring-mounted coaxially in said outer cylinder;
• c. free piston means in fluid communication with said outer cylinder for recirculating fluid during an expansion of said system;
• d. spacer means mounted between said inner cylinder and said outer cylinder and in slidable fluid tight relation with the inner walls of said outer cylinder for metering fluid from said free piston means to said inner cylinder, and from said outer cylinder to said free piston means;
• and
• e. force piston means slidably mounted in said inner cylinder and having a piston rod extending downward through said ported bottom closure in slidable fluid tight relation for operating in cooperation with said spacer means to circulate fluid through said inner cylinder.

A shock absorber system, which comprises:

• a. an outer cylinder having a top closure and a ported bottom closure;
• b. an inner cylinder mounted coaxially in said outer cylinder;
• c. spacer means positioned between the top of said inner cylinder and said outer cylinder and having a peripheral liquid seal in contact with the inner surface of said outer cylinder for separating filtered fluid from worked fluid;
• d. main piston means in said inner cylinder having a piston rod extending through said ported bottom closure in slidable fluid tight relation for cooperating with said spacer means to circulate fluid through said system;
• e. structure including a filter for forming an exhaust flow channel leading from beneath said main piston, and a return flow channel leading to said spacer means;
• and
• f. free piston means in fluid communication with said structure for receiving said filtered fluid from said exhaust flow channel, and supplying said filtered fluid under pressure to said spacer means.