Abstract:
An expansion tool includes a housing and a collar rotatably coupled to the housing. The collar includes a plurality of slots. The expansion tool further includes a plurality of jaws, each jaw having a projection received in a corresponding one of the plurality of slots such that the jaws are coupled for co-rotation with the collar. The expansion tool also includes a mandrel movable relative to the housing between a retracted position and an extended position, the mandrel engageable with the jaws to expand the jaws in response to movement of the mandrel to the extended position, and a drive mechanism including a rotatable cam. Rotation of the cam moves the mandrel between the retracted position and the extended position. The expansion tool further includes a rotation mechanism configured to incrementally rotate the collar.
Abstract:
A pipe made from thermoplastic material of the PVC-O type having an axis of symmetry (101); the pipe (100) has a main longitudinal extension in a direction parallel to the axis of symmetry (101) from a first end (102) to a second end (103); the pipe (100) has an inner chamber (104) passing from the first end (102) to the second end (103); the pipe (100) comprises a seal (200), positioned in a respective housing seat (111), with circumferential extension relative to the axis of symmetry (101); the seal (200) has an inner surface (201), facing the inner chamber (104), and an outer surface (202), facing the housing seat (111); the outer surface (202) of the seal (200) has a first portion (203) and a second portion (204) arranged contiguous to each other and in such a way as to define a cusp (205); the first portion (203) and the second portion (204) are inclined relative to a direction parallel to the axis of symmetry (101) by a respective acute angle (θa; θp); the inner chamber (104) has a taper (108) leading towards the outside environment at the first end (102) of the pipe (100), having a divergent shape; the taper (108) has an inclination relative to a direction parallel to the axis of symmetry (101) equal to an acute angle (αf) whose value is in relation to the value of the acute angle (θp) of inclination of the first portion (203) of the outer surface (202) of the seal (200), relative to a direction parallel to the axis of symmetry (101) of the pipe (100).
Abstract:
Described is an apparatus for heating end portions (2) of pipes (3) made of thermoplastic material, comprising an internal heating element (8), designed to be inserted at least partially inside an end portion (2) of a pipe (3) made of thermoplastic material for heating an inner cylindrical surface (2b) of the portion (2), the heating element (8) comprising at least one infra-red ray radiation unit (9) which has an operating zone (10) designed to face at least partially the inner cylindrical surface (2b), the operating zone (10) extending longitudinally along a predetermined direction (D), parallel to a central axis (C) of the pipe (3) to be heated.
Abstract:
본 발명은 합성수지를 압출하여 성형된 관체의 단부 외주면에 동종 또는 이종의 합성수지로 제조된 보강관을 장착하고, 상기 확관부가 형성될 관체 및 보강관을 유리전이점까지 가열시킨 다음, 상기 보강관이 장착된 범위 내에서 관체 단부를 확관용 외부성형틀에 끼워 고정시킨 후, 관체 내부로 확관부재를 진입시켜 보강관이 장착된 관체 단부를 확관성형하는 것을 특징으로 하는 확관부를 갖는 연결관의 보강방법 및 상기 보강방법에 의해 보강된 확관부를 갖는 연결관에 관한 것으로, 상기와 같이 보강된 연결관은 확관부가 형성될 관체 단부에 수지제 보강관을 장착한 상태에서 확관시킴에 따라 확관부가 연신되어 상대적으로 두께가 얇아지는 것을 보강관이 보완하여 외부충격으로 인한 파손 및 토압이나 수압 등의 내,외부 압력에 의해 확관부의 절곡부위가 파단되는 것을 방지할 수 있다.
Abstract:
본 발명에 따른 확관 장치는 튜브의 외경을 축소시킨 상태에서 튜브를 내관에 삽입하므로 튜브 삽입이 용이하게 이루어지고, 튜브를 내관에 삽입한 후에 튜브를 팽창시켜 내관을 튜브에 밀착 고정한 상태에서 내관을 외관에 삽입하므로 내관 삽입이 용이하게 이루어질 수 있다는 특징을 갖는다.
Abstract:
This disclosure enables various bits to widen (e.g., flare, swage) various open end portions (e.g., with a circular cross-section) of various tubes (e.g., a metal tube, an alloy tube, a copper tube, an aluminum tube) by engaging thereagainst.
Abstract:
A polymer pipe has a length between a first end and a second end. The length and the first end have a first diameter and the second end is a belled end having a second diameter larger than the first diameter. An insert device is received within the second end and has an annular body and a spline groove formed in the annular body and facing radially inward. The insert device is pre-installed in the belled end during the belling process.
Abstract:
A polymer pipe has a length between a first end and a second end. The length and the first end have a first diameter and the second end is a belled end having a second diameter larger than the first diameter. An insert device is received or pre-installed within the second end and has an annular body with a seal part coupled to the annular body and a spline groove formed in the annular body and facing radially inward. Another polymer pipe is inserted in the belled end to form a pipe joint assembly and has a mating spline groove on the outer surface. The spline groove and mating spline groove axially align and receive a spline therein to axially interlock the two polymer pipes to form a pipe joint assembly.
Abstract:
The invention relates to a filter housing (1), comprising: an extruded tube with at least one expanded end (2); and a bush (3) arranged in the expanded end (2). The invention further relates to a method for manufacturing an above stated filter housing (1), which method comprises the steps of: providing an extruded tube, heating an end of the extruded tube, expanding the end (2) of the tube, arranging a bush (3) in the expanded end (2).
Abstract:
A method for applying an integral socket to a pipe (50) made from biaxially oriented thermoplastic material, which pipe has a pipe body and is provided, at one or both ends, with an integral socket, in which method a pre-fabricated pipe (50) from biaxially oriented thermoplastic material is subjected to a socket-forming operation using a socket-forming device (51, 53, 54), by means of which an end part, which has been heated to a suitably elevated temperature, of the pipe which has previously been produced, is formed into a socket, after which the end part which has been deformed into a socket is cooled, characterized by the steps of - fixing both axial ends of the unheated end part of the pipe, - heating the fixed end part to a suitable socket-forming temperature in one or more steps, and - expanding the axially fixed end part with the aid of a fluid pressure in the interior of the end part and/or a vacuum on the outer side of the end part, which expansion may if appropriate begin as early as during the heating of the end part.