Abstract

A method of swarflessly cutting a pipe, comprising the steps of: forming first and second slits 10) in an external surface of the pipe (1); inserting first and second pointed blades (51), point‑first, into the respective first and second slits 10) in a radial insertion direction perpendicular to the axis of the pipe (1); moving each blade (51), in the insertion direction, through the proximal wall of the pipe (1); moving each blade (51), in the insertion direction, through the rest of the pipe (1) to completely shear a section of the pipe (1).

IPC Classes  ?

• B23D 21/02 - Machines or devices for shearing or cutting tubes otherwise than in a plane perpendicular to the axis of the tube, e.g. for making mitred cuts, for making bicycle frames
• B23D 35/00 - Tools for shearing machines or shearing devicesHolders or chucks for shearing tools
• F16L 55/105 - Closing devices introduced radially into the pipe or hose
• B23D 15/14 - Shearing machines or shearing devices cutting by blades which move parallel to each other characterised by drives or gearings therefor actuated by fluid or gas pressure

Abstract

An apparatus for temporarily blocking fluid flow through a pipe comprises a housing configured to enclose a portion of a pipe and a flow blockage device. The housing includes a first part defining a housing chamber for receiving the pipe, and a second part defining a stowage space adjacent the housing chamber. The flow blockage device is movable through an aperture formed in one side of the pipe to an installed position in the housing chamber. The flow blockage device includes an outer sealing part that is configurable between an unexpanded configuration allowing the flow blockage device to pass through the aperture and allowing fluid flow through the pipe and an expanded configuration configured to block fluid flow through pipe by substantially preventing passage of fluid between outer side surfaces of the flow blockage device and inner surfaces of the pipe.

IPC Classes  ?

• F16L 55/124 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced radially into the pipe or hose
• F16L 41/06 - Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluidsFittings therefor making use of attaching means embracing the pipe
• F16L 41/16 - Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of a wall or to the axis of another pipe the branch pipe comprising fluid cut-off means

Abstract

Apparatus for temporarily blocking fluid flow through a pipe (20), comprising: a housing (40) configured to enclose a portion of a pipe through which fluid flow is to be blocked, the housing comprising: a first part defining a housing chamber configured to receive the portion of the pipe; and a second part extending from the first part, the second part defining a stowage space adjacent the housing chamber; a flow blockage device (400) movable along an insertion axis from a stowed position in the stowage space (410) through an aperture formed in one side of the pipe to an installed position in the housing chamber; and wherein the flow blockage device (400) includes an outer sealing part (420), the outer sealing part (420) being configurable when the flow blockage device (400) is in the installed position between an unexpanded configuration allowing the flow blockage device (400) to pass through the aperture and allowing fluid flow through the portion of pipe in the housing chamber between outer side surfaces of the flow blockage device (400) and inner surfaces of the portion of pipe and an expanded configuration configured to block fluid flow through the portion of pipe in the housing chamber by substantially preventing passage of fluid between outer side surfaces of the flow blockage device and inner surfaces of the portion of pipe.

IPC Classes  ?

• F16L 55/105 - Closing devices introduced radially into the pipe or hose
• F16L 55/124 - Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced radially into the pipe or hose
• F16L 41/06 - Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluidsFittings therefor making use of attaching means embracing the pipe
• F16L 41/16 - Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of a wall or to the axis of another pipe the branch pipe comprising fluid cut-off means
• F16K 31/524 - Mechanical actuating means with crank, eccentric, or cam with a cam

Abstract

Apparatus for controlling flow of fluid through a pipe, comprising: a housing configured to enclose a portion of a pipe through which fluid flow is to be controlled, the housing comprising: a first part defining a chamber configured to receive the portion of the pipe; and a second part extending from the first part, the second part defining a stowage space adjacent the chamber; a flow control device from a stowed position in the stowage space to an installed position in the chamber for selectively controlling flow through the housing, the flow control device comprising a body having a leading end defining a cutting surface for removing a section of the pipe enclosed by the housing as the flow control device moves from the stowed position to the installed position in order to form an opening in the pipe for receiving the flow control device when in the installed position; and a rotary drive mechanism for moving the flow control device from the stowed position to the installed position in response to a rotary input.

IPC Classes  ?

• F16L 55/18 - Appliances for use in repairing pipes
• B23B 41/08 - Boring or drilling machines or devices specially adapted for particular workAccessories specially adapted therefor for boring, drilling, or tapping holes in tubes under fluid or gas pressure

Abstract

Apparatus (10) for controlling flow of fluid through a pipe, comprising: a housing (40) configured to enclose a portion of a pipe through which fluid flow is to be controlled, the housing (40) comprising: a first part (42) defining a chamber (48) configured to receive the portion of the pipe; and a second part (70) extending from the first part (42), the second part (70) defining a stowage space (72) adjacent the chamber (48); a flow control device (100) moveable from a stowed position in the stowage space (72) to an installed position in the chamber (48) for selectively controlling flow through the housing (40), the flow control device (100) comprising a body (102) having a leading end (104) defining a cutting surface (110) for removing a section of the pipe enclosed by the housing (40) as the flow control device (100) moves from the stowed position to the installed position in order to form an opening in the pipe for receiving the flow control device (100) when in the installed position; and a rotary drive mechanism (150) for moving the flow control device (100) from the stowed position to the installed position in response to a rotary input.

IPC Classes  ?

• F16L 41/06 - Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluidsFittings therefor making use of attaching means embracing the pipe
• F16L 47/34 - Tapping pipes, i.e. making connections through walls of pipes while carrying fluidsFittings therefor
• F16L 55/10 - Means for stopping flow in pipes or hoses
• F16L 55/105 - Closing devices introduced radially into the pipe or hose