US 4,714,513 AGranted

Apparatus for fushion welding plastic pipe joints

OwnerRoy E. McAlisterinventor

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Abstract

Apparatus for use in fushion welding joints in a plastic pipe system comprising a heating device including a housing providing a rearwardly disposed pistol grip handle, a heating member secured in heat insulating relation to the housing in a forwardly extending position with respect to the pistol grip handle, a secondary handle structure detachably fixedly secured to a side of the housing at one end thereof and extending outwardly therefrom having an adjustable depth gauge on the outer end thereof for receiving the end of a plastic pipe and determining the depth to which the pipe end should be heated to fushion weld the same into a mating socket of a plastic fitting, a clamping device operable to be clamped in rounding engagement with the exterior periphery of the plastic pipe at a position inwardly of the depth thereof determined by the depth gauge, heatable socket and plug members detachably fixedly secured to the heating member for receiving in heat conducting relation a plastic pipe end and a mating socket of a plastic fitting, and a timing signal for providing signals for enabling an operator to determine the time when the pipe end and mating socket should be removed from heat transmitting relation with the heated socket and plug members respectively.

Claims37

Dependent claims

Apparatus for use in fusion welding joints in a plastic pipe system comprising:

a heating device including;
a housing providing a rearwardly disposed pistol grip handle,
a heating member having opposed sides facing in directions corresponding to opposed sides of said pistol grip handle,
means for securing said heating member in heat insulating relation to said housing in a forwardly extending position with respect to said pistol grip handle,
a secondary handle structure detachably fixedly secured to a side of said housing at one end thereof and extending outwardly therefrom,
depth gauge means on the outer end of said secondary handle for receiving the end of a plastic pipe and determining the depth to which said pipe end should be heated to fusion weld the same into a mating socket of a plastic fitting,
a clamping device operable to be clamped in rounding engagement with the exterior periphery of the plastic pipe at a position inwardly of the depth thereof determined by said depth gauge means,
a heatable socket member detachably fixedly secured to one side of said heating member for receiving in heat conducting relation therein a plastic pipe end up to the depth determined by the position of said clamping device thereon,
a heatable plug member detachably fixedly secured to the other side of said heating member for receiving in heat transmitting relation thereof a mating socket of a plastic fitting,
said heating device further including means for controllably heating said heating member so as to bring said heatable socket member and said heatable plug member to a desired temperature, and
timing signal means for providing signal means for enabling an operator to determine the time when the pipe end and mating socket should be removed from heat transmitting relation with the heated socket and plug members respectively.

8 more elements

Apparatus for use with a clamping device in effecting fusion welding of joints in a plastic pipe system comprising:

a heating device including;
a housing providing a rearwardly disposed pistol grip handle,
a heating member having opposed sides facing in directions corresponding to opposed sides of said pistol grip handle,
means for securing said heating membr in heat insulating relation to said housing in a forwardly extending position with respect to said pistol grip handle,
a secondary handle structure detachably fixedly secured to a side of said housing at one end thereof and extending outwardly therefrom,
depth gauge means on the outer end of said secondary handle for receiving the end of a plastic pipe and determining the depth to which the clamping device should be applied to said pipe end for limiting the depth of the pipe end to be heated to fusion weld the same into a mating socket of a plastic fitting,
a heatable socket member detachably fixedly secured to one side of said heating member for receiving in heat conduction relation therein a plastic pipe end up to the depth determined by the position of a clamping device thereon, and
a heatable plug member detachably fixedly secured to the other side of said heating member for receiving in heat transmitting relation thereover a mating socket of a plastic fitting,
said depth gauge means comprising:
a tubular member having an outer free peripheral edge and an interior opening extending inwardly thereof for receiving a plastic pipe end therein,
a separate pipe edge enagaging wall within said interior opening for engaging the edge of a plastic pipe end received within said interior opening, and
means for fixedly mounting said separate wall in a selected one of a plurality of axially spaced positions of adjustment within said interior opening.

9 more elements

Apparatus for use in fusion welding joints in a plastic pipe system comprising:

a heating device including;
a housing providing a rearwardly disposed pistol grip handle,
a heating member having opposed sides facing in directions corresponding to opposed sides of said pistol grip handle,
means for securing said heating member in heat insulating relation to said housing in a forwardly extending position with respect to said pistol grip handle,
a heatable socket member detachably fixedly secured to one side of said heating member for receiving in heat conducting relation therein a plastic pipe end up to the depth determined by the position of a clamping device thereon as determined by the application of a depth gauge means thereto,
a heatable plug member detachably fixedly secured to the other side of said heating member for receiving in heat transmitting relation thereover a mating socket of a plastic fitting,
means for controllably heating said heating member so as to bring said heatable socket member and said heatable plug member to a desired temperature,
timing signal means for providing signal means for enabling an operator to determine the time when the pipe end and mating socket should be removed from heat transmitting relation with the heated socket and plug members respectively,
said pistol grip handle including a mounting plate extending forwardly from the lower end thereof, and
means for engaging said mounting plate and securing said heating device in a fixed position of operation.

7 more elements

Apparatus for use in fusion welding joints in a plastic pipe system comprising:

a heating device including;
a housing providing a rearwardly disposed pistol grip handle,
a heating member having opposed sides facing in directions coresponding to opposed sides of said pistol grip handle,
means for securing said heating member in heat insulating relation to said housing in a forwardly extending position with respect to said pistol grip handle,
a heatable socket member detachably fixedly secured to one side of said heating member for receiving in heat conducting relation therein a plastic pipe end,
a heatable plug member detachably fixedly secured to the other side of said heating member for receiving in heat transmitting relation thereover a mating socket of a plastic fitting,
means for controllably heating said heating member so as to bring said heatable socket member and said heatable plug member to a desired temperature,
timing signal means for providing signal means for enabling an operator to determine the time when the pipe end and mating socket should be removed from heat transmitting relation with the heated socket and plug members respectively, and
shield means detachably carried by said housing for movement between a shielding position along the outer side of at least one of said heatable members so as to shield the same from contact and an operative access position providing access to said one heatable member.

6 more elements

Dependencies are inferred from the claim text.