Abstract A rigid wall pipe pulling device comprising a substantially tubular housing having one open end and having holding means from the closed end thereof, said housing having a bore therein tapered in the direction of said open end, a tapered boss projecting from the inner closed end of said bore, a tubular holding member conforming to the taper of said bore and having a non-smooth inner surface and having a slotted portion thereof disposed within said bore and a pipe received into said holding member whereby said holding member when drawn in a direction outwardly of said housing is circumferentially reduced to firmly engage and secure said pipe therein and said holding member on being moved inwardly of said housing for engagement with said boss is spread by said boss to release said pipe therein.
A pipe pulling device having in combination a housing having a closed end, a holding means extending from said closed end, said housing having a bore therein extending from the closed end thereof and tapering in the direction of the open other end of said housing, a tapereD boss projecting into said bore from the closed end thereof, a tubular holding member disposed in said bore and extending outwardly thereof, said holding member having a plurality of elongated slots therein spaced about the portion thereof disposed within said bore, said holding member having a bore having non-smooth inner surface, and said boss being received within the adjacent slotted end portion of said holding member within said bore thereof, said boss having a diameter such as to spread said adjacent end of said last-mentioned bore.
Claim 2
Dependent Claim
134 words
A pipe pulling device having in combination a housing having a closed end, a holding means extending from said closed end, said housing having a bore therein extending from the closed end thereof and tapering in the direction of the open other end of said housing, a tapereD boss projecting into said bore from the closed end thereof, a tubular holding member disposed in said bore and extending outwardly thereof, said holding member having a plurality of elongated slots therein spaced about the portion thereof disposed within said bore, said holding member having a bore having non-smooth inner surface, and said boss being received within the adjacent slotted end portion of said holding member within said bore thereof, said boss having a diameter such as to spread said adjacent end of said last-mentioned bore.
Claim 3
Dependent Claim
23 words
The structure set forth in claim 1, wherein said holding member has an internally bevelled end portion about said bore adjacent said boss.
Claim 4
Dependent Claim
20 words
The structure set forth in claim 1, wherein said bore of said holding member has a surface comprising tooth-like projections.