Plastic one-piece saddle for plastic pipe

Claim 2

A plastic saddle for plastic pipe and comprising, a central boss for a branch pipe, at least one side band depending from each side of the central boss, each side band having a molded in diameter somewhat smaller than the outside diameter of the plastic pipe, and holding means including sharp points projecting from the inside surface of each band near the lower end of the band and effective to grip into the outer surface of the plastic pipe.

Claim 3

The invention defined in claim 1 including a plurality of bands on each side of the central boss.

Claim 4

The invention defined in claim 1 wherein the central boss includes an upper end portion having inwardly projecting gripper means including sharp points for gripping into the outer surface of a branch plastic pipe which fits within the central boss.

Claim 5

A plastic saddle for plastic pipe and comprising, a central boss for a branch pipe, at least one side band depending from each side of the central boss, each side band having a molded in diameter somewhat smaller than the outside diameter of the plastic pipe, and holding means projecting from the inside surface of each band near the lower end of the band and effective to grip into the outer surface of the plastic pipe, and wherein the holding means include molded in spikes having outer points directed generally upward toward the central boss.

Claim 6

A plastic saddle for plastic pipe and comprising, a central boss for a branch pipe, at least one side band depending from each side of the central boss, each side band having a molded in diameter somewhat smaller than the outside diameter of the plastic pipe, and holding means projecting from the inside surface of each band near the lower end of the band and effective to grip into the outer surface of the plastic pipe, and wherein the holding means include molded in spikes having outer points directed generally upward toward the central boss.

Claim 7

A plastic saddle for plastic pipe and comprising, a central boss for a branch pipe, at least one side band depending from each side of the central boss, each side band having a molded in diameter somewhat smaller than the outside diameter of the plastic pipe, and holding means projecting from the inside surface of each band near the lower end of the band and Effective to grip into the outer surface of the plastic pipe, and wherein the bands are long enough to overlap at the bottom of the plastic pipe.

Claim 8

A plastic saddle for plastic pipe and comprising, a central boss for a branch pipe, at least one side band depending from each side of the central boss, each side band having a molded in diameter somewhat smaller than the outside diameter of the plastic pipe, and holding means projecting from the inside surface of each band near the lower end of the band and Effective to grip into the outer surface of the plastic pipe, and wherein the bands are long enough to overlap at the bottom of the plastic pipe.

Claim 9

A plastic saddle for plastic pipe and comprising, a central boss for a branch pipe, at least one side band depending from each side of the central boss and being long enough to overlap at the bottom of the plastic pipe, each side band having a molded in diameter somewhat smaller than the outside diameter of the plastic pipe, and holding means projecting from the inside surface of each band near the lower end of the band and effective to grip into the outer surface of the plastic pipe, and wherein the bands interlock in at least part of the overlap.

Claim 10

A plastic saddle for plastic pipe and comprising, a central boss for a branch pipe, at least one side band depending from each side of the central boss and being long enough to overlap at the bottom of the plastic pipe, each side band having a molded in diameter somewhat smaller than the outside diameter of the plastic pipe, and holding means projecting from the inside surface of each band near the lower end of the band and effective to grip into the outer surface of the plastic pipe, and wherein the bands interlock in at least part of the overlap.

Claim 11

A plastic saddle for plastic pipe and comprising, a central boss for a branch pipe, at least one side band depending from each side of the central boss, each side band having a molded in diameter somewhat smaller than the outside of the plastic pipe, and holding means projecting from the inside surface of each band near the lower end of the band and effective to grip into the outer surface of the plastic pipe, and including gasket means integrally molded in the saddle on the inner surface of the saddle and concentric with the central boss, and wherein the gasket means include a thin section, annular member extending radially inward with respect to the axis of the central boss from the inner surface of the saddle for flexibly engaging the outer surface of the pipe in the area around the part of the pipe to be drilled.

Claim 12

A plastic saddle for plastic pipe and comprising, a central boss for a branch pipe, at least one side band depending from each side of the central boss, each side band having a molded in diameter somewhat smaller than the outside of the plastic pipe, and holding means projecting from the inside surface of each band near the lower end of the band and effective to grip into the outer surface of the plastic pipe, and including gasket means integrally molded in the saddle on the inner surface of the saddle and concentric with the central boss, and wherein the gasket means include a thin section, annular member extending radially inward with respect to the axis of the central boss from the inner surface of the saddle for flexibly engaging the outer surface of the pipe in the area around the part of the pipe to be drilled.

Claim 13

The invention defined in claim 7 wherein the radially inner edge of the flexible member is feathered to lie flat against the outer surface of the pipe.

Claim 14

A plastic saddle for plastic pipe and comprising, a central boss for a branch pipe, at least one side band depending from each side of the central boss, each side band having a molded in diameter somewhat smaller than the outside diameter of the plastic pipe, holding means projecting from the inside surface of each band near the lower end of the band and effective to grip into the outer surface of the plastic pipe, gasket means integrally molded in the saddle on the inner surface of the saddle and concentric with the central boss, the gasket means including a thin section, annular member extending radially inward for flexibly engaging the outer surface of the pipe in the area around the part of the pipe to be drilled, and wherein the radially inner edge of the flexible member is feathered to lie flat against the outer surface of the pipe, and wherein the central boss includes a downwardly extending rim for engaging the pipe around the periphery of the part to be drilled and wherein said rim is located radially inward with respect to the feather edge of the gasket member and including slots in the rim for the flow of fluid pressure to the space above the feather edge gasket member.

Claim 15

A plastic saddle for plastic pipe and comprising, a central boss for a branch pipe, at least one side band depending from each side of the central boss, each side band having a molded in diameter somewhat smaller than the outside diameter of the plastic pipe, holding means projecting from the inside surface of each band near the lower end of the band and effective to grip into the outer surface of the plastic pipe, gasket means integrally molded in the saddle on the inner surface of the saddle and concentric with the central boss, the gasket means including a thin section, annular member extending radially inward for flexibly engaging the outer surface of the pipe in the area around the part of the pipe to be drilled, and wherein the radially inner edge of the flexible member is feathered to lie flat against the outer surface of the pipe, and wherein the central boss includes a downwardly extending rim for engaging the pipe around the periphery of the part to be drilled and wherein said rim is located radially inward with respect to the feather edge of the gasket member and including slots in the rim for the flow of fluid pressure to the space above the feather edge gasket member.

Claim 16

A plastic saddle for plastic pipe and comprising, a central boss for a branch pipe, at least one side band depending from each side of the central boss, each side band having a molded in diameter somewhat smaller than the outside diameter of the plastic pipe, and holding means projecting from the inside surface of each band near the lower end of the band and effective to grip into the outer surface of the plastic pipe, and including a molded in metal spring in the upper end part of the central boss for increasing the tension of the gripping action on the branch pipe.

Claim 17

A plastic saddle for plastic pipe and comprising, a central boss for a branch pipe, at least one side band depending from each side of the central boss, each side band having a molded in diameter somewhat smaller than the outside diameter of the plastic pipe, and holding means projecting from the inside surface of each band near the lower end of the band and effective to grip into the outer surface of the plastic pipe, and including a molded in metal spring in the upper end part of the central boss for increasing the tension of the gripping action on the branch pipe.

Claim 18

A plastic saddle for plastic pipe and comprising a central boss for a branch pipe, at least one side band depending from each side of the central boss, and an annular shaped gasket member projecting radially inward with respect to the axis of the central boss and integrally from the inner surface of the saddle and concentric with the central boss and effective to flexibly engage the outer surface of the plastic pipe radially oUtwardly of the top edge of the periphery of the opening in the pipe.

Claim 19

A plastic saddle for plastic pipe and comprising a central boss for a branch pipe, at least one side band depending from each side of the central boss, and an annular shaped gasket member projecting radially inward with respect to the axis of the central boss and integrally from the inner surface of the saddle and concentric with the central boss and effective to flexibly engage the outer surface of the plastic pipe radially oUtwardly of the top edge of the periphery of the opening in the pipe.

Claim 20

The invention defined in claim 11 wherein the radially inner edge of the gasket member is a feather edge.

Claim 21

A plastic saddle for a plastic pipe and comprising a central boss for a branch pipe, at least one side band depending from each side of the central boss, and an annular shaped gasket member projecting radially inward from the inner surface of the saddle and concentric with the central boss and effective to flexibly engage the outer surface of the plastic pipe around the periphery of the opening in the pipe, and wherein the radially inner edge of the gasket member is a feather edge, and wherein the central boss includes a downwardly extending annular ridge which engages the outer surface of the plastic pipe around the periphery of the opening in the main pipe and radially inwardly of the inner edge of the gasket member and including slots in the ridge for permitting fluid flow radially outwardly and above the annular gasket member.

Claim 22

A plastic saddle for a plastic pipe and comprising a central boss for a branch pipe, at least one side band depending from each side of the central boss, and an annular shaped gasket member projecting radially inward from the inner surface of the saddle and concentric with the central boss and effective to flexibly engage the outer surface of the plastic pipe around the periphery of the opening in the pipe, and wherein the radially inner edge of the gasket member is a feather edge, and wherein the central boss includes a downwardly extending annular ridge which engages the outer surface of the plastic pipe around the periphery of the opening in the main pipe and radially inwardly of the inner edge of the gasket member and including slots in the ridge for permitting fluid flow radially outwardly and above the annular gasket member.

Claim 23

The invention defined in claim 13 wherein the saddle includes a relieved space behind the gasket member to permit the gasket member to flex into positive sealing contact by limited back flow into the relieved space.