Patent ID: 6230605
Filing Date: 2001-05-15
Classification: A63H,F01B,F02B

Abstract:
A compression seal system for a pneumatic engine, the seal system comprising:a cylinder having an inner wall with an innermost diameter and an end wall;a piston positioned within said cylinder and having an outer diameter which is less than said innermost diameter of said cylinder, said piston extending across said innermost diameter of said cylinder;a pulsating pneumatic input introduced into said cylinder; anda seal including a resilient annular skirt coupled to said piston, said skirt spaced from said end wall when said pulsating pneumatic input is introduced to said cylinder;whereby, said pulsating pneumatic input urges a portion of said skirt outwardly to initially form a fluid seal with said inner wall of said cylinder to move said piston, and said innermost diameter of said cylinder being a substantially uniform innermost diameter along a length of said cylinder that touches said skirt during movement of said seal.