Fluid pressure cylinder

A fluid power cylinder comprising:

• an elongated cylinder having a pair of pressure fluid chambers and an elongated slot of predetermined width extending generally parallel to the longitudinal axis of said cylinder, said cylinder being constructed of a material having magnetic properties and further including a first pair of beveled cylinder edges joining the sides of said slot with the inner surface of said cylinder;
• a piston reciprocally movable within said cylinder in response to the introduction of fluid pressure in said pressure fluid chambers;
• and
• an elongated inner strip seal member of greater width than said slot, said inner seal member including a laminated structure comprising a first layer of thin, non-elastic but flexible material and a second layer constructed of a rubber-like material having magnetic properties, said inner seal member further having a first pair of beveled seal member edges for engagement with said first pair of beveled cylinder edges for successively sealing said slot during movement of said piston, whereby said inner elongated strip seal member is magnetically attracted toward said cylinder for engagement between said first pair of beveled cylinder edges and said first pair of beveled seal member edges, and wherein the respective angles of said first pair of beveled cylinder edges and said first pair of beveled seal member edges, relative to a common reference line, is substantially equal thereby enabling face-to-face engagement between said first pair of beveled cylinder edges and said first pair of beveled seal member edges.

A fluid power cylinder comprising:

• an elongated cylinder having a pair of pressure fluid chambers and an elongated slot of predetermined width extending generally parallel to the longitudinal axis of said cylinder, said cylinder further including a first pair of beveled cylinder edges joining the sides of said slot with the inner surface of said cylinder and a second pair of beveled cylinder edges joining the sides of said slot with the outer surface of said cylinder;
• a piston reciprocally movable within said cylinder in response to the introduction of fluid pressure in said pressure fluid chambers;
• an elongated inner strip seal member of greater width than said slot, said inner seal member including a laminated structure comprising a first layer of thin, non-elastic but flexible material and a second layer constructed of a rubber-like material having magnetic properties, said inner seal member further having a first pair of beveled seal member edges for engagement with said first pair of beveled cylinder edges for successively sealing said slot during movement of said piston;
• and
• an elongated outer strip seal member of greater width than said slot, said outer seal member including a laminated structure comprising a first layer of thin, non-elastic but flexible material and a second layer constructed of a rubber-like material having magnetic properties, said outer seal member further having a pair of second beveled seal member edges for engagement with said second pair of beveled cylinder edges for successively sealing said slot during movement of said piston, wherein the respective angles of said first pair of beveled cylinder edges and said first pair of beveled seal member edges, relative to a common reference line, is substantially equal and the respective angles of said second pair of beveled cylinder edges and said second pair of beveled seal member edges, relative to a common reference line, is substantially equal, thereby enabling face-to-face engagement between said first pair of beveled cylinder edges and said first pair of beveled seal member edges and between said second pair of beveled cylinder edges and said second pair of seal member edges.

A fluid power cylinder comprising:

• an elongated cylinder having a pair of pressure fluid chambers and an elongated slot of predetermined width extending generally parallel to the longitudinal axis of said cylinder said cylinder further including a first pair of beveled cylinder edges joining the sides of said slot with the inner surface of said cylinder;
• a piston reciprocally movable within said cylinder in response to the introduction of fluid pressure in said pressure fluid chambers;
• an elongated strip seal member of greater width than said slot for engagement with the inner surface of said cylinder along said slot to form a seal therebetween, said strip seal member including a laminated structure comprising a first layer of thin, non-elastic but flexible material and a second layer of magnetic material, said first and second layers being secured to one another, said strip seal member further having top and bottom generally flat surfaces parallel to one another and a first pair of beveled seal member edges for cooperating engagement with said first pair of beveled cylinder edges for successively sealing said slot during movement of said piston;
• and
• a piston seal member disposed about said piston for engagement with the inner surface of said cylinder and the inner surface of said strip seal member, said piston seal member having a flat outer surface section conforming generally to the configuration of an inner surface of said strip seal member.

A fluid power cylinder comprising:

• an elongated cylinder having a pair of pressure fluid chambers and an elongated slot of predetermined width extending generally parallel to the longitudinal axis of said cylinder, said cylinder further including a first pair of beveled cylinder edges joining the sides of said slot with the inner surface of said cylinder;
• a piston reciprocally movable within said cylinder in response to the introduction of fluid pressure in said pressure fluid chambers;
• and
• an elongated inner strip seal member of greater width than said slot, said inner seal member including a laminated structure comprising a first layer of thin, non-elastic but flexible material and a second layer constructed of a rubber-like material having magnetic properties, said first and second layers being secured to one another, said inner seal member further having a first pair of beveled seal member edges for cooperating engagement with said first pair of beveled cylinder edges for successively sealing said slot during movement of said piston.