| 摘要 |
A spring device (10) comprises a first piston (12) operable within a first cylinder (14), and a second piston (16) operable within a second cylinder (18). The interiors of the two cylinders (14, 18) are in communication such that a chamber (22) comprising pressurised gas is formed between the first piston (12) and the second piston (16). A second chamber (28) comprising pressurised gas is formed between the second piston (16) and the second cylinder (18). In use when a force is applied to move the first piston (12) into the first cylinder (14), the movement of the first piston (12) is resisted by the fluid in the chamber (22). This, in turn, causes the second piston to move against the resistance of the gas in the second chamber (28). The result is a resilient resistance to the depression of the first piston (12) and a storage of energy in the device. When the force is alleviated, the resilience of the device (10) urges the pistons (12, 16) to their rest positions. |
