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US 11,359,746 B2Granted
Method of repairing a leaking valve stem
AssigneeWhitmore Manufacturing, LLC
InventorsDonald A. Oldiges, Tom Blake, Rodney Roth, Gregory Paul Bruckner, Dennis Wayne Jones, III
Life of this patent
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Abstract
A non-curable injectable ester containing packing material for use in the repair of leaking valves contains a calcium sulfonate grease containing at least one polyalphaolefin, an ester, an anti-wear/anti-galling agent, a binding/thickening agent and a plasticizing agent.
Claims20
A method of repairing a leaking valve stem comprising:
- (a) drilling and tapping into the leaking valve stem;
- and
- (b) injecting into the valve stem a composition comprising:
- (i) a calcium sulfonate complex grease comprising at least one polyalphaolefin and at least one ester:
- (ii) at least one anti-wear/anti-galling agent;
- (iii) at least one binding/thickening agent;
- and
- (iv) a plasticizing agent miscible with the ester of the calcium sulfonate complex grease;
- and
- (c) closing the valve stem.
7 more elements
A method of repairing a leaking valve stem comprising:
- (a) drilling and tapping into the leaking valve stem;
- (b) injecting into the valve stem an incurable composition comprising:
- (i) a calcium sulfonate complex grease comprising at least one polyalphaolefin;
- (ii) at least one anti-wear/anti-galling agent
- (iii) at least one binding/thickening agent;
- (iv) an ester;
- and
- (v) a plasticizing agent;
- and
- (c) closing the valve steam stem.
7 more elements
Dependencies are inferred from the claim text.