Abstract A packing arrangement for a floating piston dividing a cylinder into first and second chambers comprising a circumferential groove formed in the sliding surface of the floating piston; a circumferential elevation dividing the bottom of the groove into first and second spaces situated on either side of the elevation; backing material placed in the groove; a sealing ring radially situated upon the backing material; first and second extensions on the backing material projecting into the first and second spaces, respectively; each extension having first and second lips forming an annular space between the bottom of the groove and the internal surface of the backing material; the first lip of each extension abutting a lateral wall of the groove and the second lip of each extension abutting a lateral surface of the elevation; a first pressure channel connecting the first chamber with the annular space formed by the first extension; and a second pressure channel connecting the second chamber with the annular space formed by the second extension.
A packing arrangement for a floating piston dividing a cylinder into first and second chambers comprising: a circumferential groove formed in the sliding surface of said floating piston; a circumferential elevation dividing the bottom of said groove into first and second spaces situated on either side of said elevation; backing material placed in said groove; a sealing ring radially situated upon said backing material; first and second extensions on said backing material projecting into said first and second spaces, respectively; each extension having first and second lips forming an annular space between the bottom of said groove and the internal surface of said backing material; said first lip of each extension abutting a lateral wall of said groove and said second lip of each extension abutting a lateral surface of said elevation; a first pressure channel connecting the first chamber with said annular space formed by said first extension; and a second pressure channel connecting the second chamber with said annular space formed by said second extension.
Claim 2
Dependent Claim
167 words
A packing arrangement for a floating piston dividing a cylinder into first and second chambers comprising: a circumferential groove formed in the sliding surface of said floating piston; a circumferential elevation dividing the bottom of said groove into first and second spaces situated on either side of said elevation; backing material placed in said groove; a sealing ring radially situated upon said backing material; first and second extensions on said backing material projecting into said first and second spaces, respectively; each extension having first and second lips forming an annular space between the bottom of said groove and the internal surface of said backing material; said first lip of each extension abutting a lateral wall of said groove and said second lip of each extension abutting a lateral surface of said elevation; a first pressure channel connecting the first chamber with said annular space formed by said first extension; and a second pressure channel connecting the second chamber with said annular space formed by said second extension.
Claim 3
Dependent Claim
28 words
The packing arrangement as recited in claim 1, wherein said first and second lips of each extension end in a point and are formed by splitting said extensions.
Claim 4
Dependent Claim
15 words
A packing arrangement as recited in claim 1, wherein said circumferential elevation has bevelled sides.
Claim 5
Dependent Claim
28 words
The packing arrangement as recited in claim 1, wherein said sealing ring includes a circumferential groove abutting the sliding surface of the cylinder filled by a lubricating deposit.
Claim 6
Dependent Claim
15 words
The packing arrangement as recited in claim 4, wherein said lubricating deposit is graphite oil.