Spring hanger

Claim 2

A spring hanger for suspending pipelines comprising: pipe lines an upper and lower compression spring arranged in vertical axial alignment; a casing having an opening in the bottom thereof to house the compression spring means; a spring spacer located between the upper and lower compression springs to maintain the compression spring means in vertical axial alignment, which spring spacer has an outer surface sized to conform to the inner diameter of the compression springs, a peripheral rib formed on the outer surface of the spring spacer, which rib is adapted to extend beyond the outer surface of the outer periphery of the compression springs; a plurality of bumpers formed of low-friction material which bumpers are peripherally disposed on the rib; and a suspension assembly adapted to suspend the pipe line from the spring hanger and transmit the load from the pipe line to both compression springs simultaneously.

Claim 3

An apparatus as in claim 1 wherein the suspension assembly is comprised of a disc adapted to bear against the top of the upper compression spring member, which disc is smaller in diameter than the inner diameter of the casing and a suspension rod connected at one end to the disc and at the other end to the pipe being suspended.

Claim 4

An apparatus as in claim 2 wherein the suspension assembly further comprises a plurally articulated joint adapted to connect the piston suspension rod to the disc and a turnbuckle in the suspension rod.

Claim 5

An apparatus as in claim 3 further comprising a plurality of bumpers formed of low-friction material which bumpers are peripherally disposed on the disc bearing against the top of the upper compression spring.

Claim 6

An apparatus as in claim 4 further comprising means to indicate the load imposed on the compression spring.

Claim 7

A spring hanger for suspending pipelines comprising: compression spring means; means to house the compression spring means; means to maintain the compression spring means in vertical axial alignment; a suspension rod assembly adapted to suspend the pipeline from the spring hanger; a calibrated sleeve slidably mounted on the suspension rod to indicate the load on the compression spring; and means to rigidly fix the sleeve on the suspension rod at any point thereon.

Claim 8

A spring hanger for suspending pipelines comprising: compression spring means; means to house the compression spring means; means to maintain the compression spring means in vertical axial alignment; a suspension rod assembly adapted to suspend the pipeline from the spring hanger; a calibrated sleeve slidably mounted on the suspension rod to indicate the load on the compression spring; and means to rigidly fix the sleeve on the suspension rod at any point thereon.

Claim 9

An apparatus as in claim 6 further comprising means to locate the compression spring in the casing.

Claim 10

An apparatus as in claim 7 wherein the means to house the compression spring means in a cylindrical casing having a casing bottom and the suspension rod assembly includes a disc which bears on the top of the compression spring and the means to locate the compression spring in the casing is comprised of a first centering ring extending upwardly from the inner surface of the casing bottom and a second centering ring depending from the lower surface of the disc of the suspension rod assembly.

Claim 11

A spring hanger for suspending pipelines comprising: an outer compression spring; an inner compression spring arranged concentrically within the outer compression spring; an outer casing; a flange extending inwardly from the outer casing adapted to support the outer compression spring; an inner casing; a flange extending outwardly from the top of the inner casing adapted to bear on the top of the outer compression spring; an inner casing bottom having a centrally disposed hole therein, said casing bottom adapted to support the inner compression spring; a plurality of bumpers formed of low-friction material arranged on the outer peripheral surface of the flange extending outwardly from the inner casing; a plurality of bumpers formed of low-friction matErial arranged on the inner peripheral surface of the flange extending inwardly from the outer casing; a plurality of bumpers formed of low-friction material arranged on the periphery of the disc bearing on the inner compression spring; and a suspension rod assembly adapted to suspend the pipeline from the spring hanger.

Claim 12

A spring hanger for suspending pipelines comprising: an outer compression spring; an inner compression spring arranged concentrically within the outer compression spring; an outer casing; a flange extending inwardly from the outer casing adapted to support the outer compression spring; an inner casing; a flange extending outwardly from the top of the inner casing adapted to bear on the top of the outer compression spring; an inner casing bottom having a centrally disposed hole therein, said casing bottom adapted to support the inner compression spring; a plurality of bumpers formed of low-friction material arranged on the outer peripheral surface of the flange extending outwardly from the inner casing; a plurality of bumpers formed of low-friction matErial arranged on the inner peripheral surface of the flange extending inwardly from the outer casing; a plurality of bumpers formed of low-friction material arranged on the periphery of the disc bearing on the inner compression spring; and a suspension rod assembly adapted to suspend the pipeline from the spring hanger.

Claim 13

An apparatus as in claim 9 further comprising low-friction coatings on the inner surface of the outer housing and the inner surface of the inner housing.

Claim 14

An apparatus as in claim 10 further comprising a low-friction coating on the outer wall of the inner casing.

Claim 15

An apparatus as in claim 10 wherein the suspension assembly is comprised of a disc adapted to bear against the top of the inner compression spring, which disc is smaller in diameter than the inner diameter of the inner casing and a suspension rod connected at one end to the disc and at the other to the pipe being suspended.

Claim 16

An apparatus as in claim 12 wherein the suspension assembly further comprises a plurally articulated joint adapted to connect the suspension rod to the disc and a turnbuckle in the suspension rod.

Claim 17

An apparatus as in claim 9 further comprising means to indicate the load imposed on the compression spring.

Claim 18

An apparatus as in claim 14 wherein the means to indicate the load in the compression spring is comprised of a calibrated indicator slidably mounted on the suspension rod and means to rigidly fix the indicator to the suspension rod at any point thereon.

Claim 19

An apparatus as in claim 15 further comprising means to locate the inner compression spring and the outer compression spring.

Claim 20

An apparatus as in claim 16 wherein the means to locate the inner compression spring is a centering ring extending upwardly from the bottom cap of the inner casing and a centering ring depending from the lower surface of the disc bearing on the inner compression spring and the means to locate the outer compression spring is a centering ring extending upwardly from the flange extending inwardly from the outer casing and a centering ring depending from the flange extending outwardly from the inner casing.