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US 5,529,290 AGranted
Apparatus for quenching coil springs to assure cooling
OwnerBarry Dragerinventor
Life of this patent
Estimating the term…
Abstract
A method and apparatus for controlled quenching of hot formed coils is desccribed, and has a timed dip on a wand connected to a pump. The wand delivers quench liquid into the coil to prevent bubbles from forming in the coil, damaging the coil from irregular quenching.
Claims17
An apparatus for quenching a coil spring during fabrication after the coil spring is heated, the quenching apparatus comprising:
- (a) a tank for coolant having a specified depth;
- (b) an overhead traveling lance moving upwardly and downwardly wherein upward movement positions said lance above the coolant in the tank and downward movement positions said lance in the coolant;
- (c) a pump operable to deliver through a feed line a flow of coolant liquid into the lance wherein the lance incorporates an outlet directing flowing coolant from the pump to the inside face of a coil spring supported on the lance;
- and
- (d) wherein said lance delivers a flow of coolant to the inside face of the heated coil spring while submerging the coil spring in the coolant to thereby overcome the tendency of the coolant to form a vaporized bubble of coolant on the coil spring interior against the inside face of the coil spring.
2 more elements
An apparatus for quenching a coil spring during fabrication after the coil spring is heated, the quenching apparatus comprising:
- (a) a tank for coolant having a specified depth;
- (b) an overhead lance supporting a coil spring and moving upwardly and downwardly wherein upward movement positions said lance above the coolant in the tank and downward movement positions a coil spring on said lance in the coolant;
- (c) a pump operable to deliver pumped coolant from said lance wherein the lance directs pumped coolant to the inside face of the coil spring supported on the lance;
- and
- (d) wherein said lance delivers coolant to the inside face of the heated coil spring while submerging the coil spring in the coolant to thereby overcome the tendency of the coolant to form a vaporized bubble of coolant on the coil spring interior against the inside face of the coil spring.
2 more elements
Dependencies are inferred from the claim text.