Claims
- 1. A method of sanding a piston rod reciprocating in a hydraulic cylinder or the like to counteract the deterioration of said piston rod as a result of operation and other causes, permitting continuous operation of said piston rod during the sanding operation, comprising the steps of:
- providing an annular member comprising substantially diametrically opposed half portions;
- providing mating nonaxial surfaces on the opposed edges of the half portions of the annular member;
- providing the inner surface of the annular member with an abrasive layer;
- positioning the half portions of the annular member around the outer circumference of a piston rod which requires sanding;
- providing clamping means adapted to secure the annular member about the outer circumference of the piston rod;
- securing the clamping means around the outer circumference of the annular member to retain the half portions thereof with the mating nonaxial surfaces engaging one another and to retain the abrasive layer thereof in interference contact with the outer circumference of the piston rod;
- limiting the axial motion of the annular member with respect to the hydraulic cylinder;
- and reciprocating the piston rod within the hydraulic cylinder with the abrasive layer of the annular member thereby sanding the outer circumference of the piston rod.
- 2. The method of claim 1 wherein the step of providing an annular member comprising substantially diametrically opposed half portions consists of providing a rigid outer annular member, a elastomeric intermediate annular member and an abrasive inner annular member formed of a material selected from the group consisting of sandpaper, emory cloth and crocus cloth materials and adhesively bonding the annular intermediate member to the inner surface of the outer annular member and similarly bonding the inner annular member to the inner surface of the intermediate annular member.
- 3. A method of removing rust and corrosion from a piston rod reciprocating in a hydraulic cylinder or the like to effect reconditioning of the piston rod when necessary due to deterioration resulting from operation and other causes, which permits continuous operation of the piston rod, comprising the steps of:
- forming an elastomeric matrix with abrasive particles of material selected from the group consisting of brass and bronze materials embedded therein;
- shaping said matrix into an annular member and positioning it about the outer circumference of the piston rod;
- providing clamping means adapted to secure the elastomeric matrix about the outer circumference of the piston rod;
- securing the clamping means around the elastomeric matrix to retain the matrix in engagement with the outer circumference of the piston rod and to urge the inner surface of the elastomeric matrix into interference contact with the outer circumference of the piston rod;
- limiting the axial movement of the elastomeric matrix with respect to the hydraulic cylinder;
- reciprocating the piston rod within the hydraulic cylinder to effect removal of rust and corrosion from the outer surface of the piston rod.
- 4. The method of claim 3 wherein the step of limiting the motion of the elastomeric matrix with respect to the hydraulic cylinder consists of providing an annular member of rigid material completely surrounding the outer circumference of the piston rod but not in interference contact with said outer circumference and limiting the motion of said annular member relative to the hydraulic cylinder so that the elastomeric matrix is confined between said annular member and said hydraulic cylinder.
Parent Case Info
This is a continuation of application Ser. No. 721,984, filed Sept. 10, 1976, now U.S. Pat. No. 4,089,137, granted May 16, 1978.
US Referenced Citations (7)
Continuations (1)
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Number |
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721984 |
Sep 1976 |
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