Atlas Copco Industrial Technique Ab

Xylem IP Holdings, LLC

Itt Manufacturing Enterprises, Inc.

Xylem IP Management S.a R.l.

Patrik Leander Andersson

Stefan Ramström

A torque transmitting assembly for a power tool comprising an angle head having a first output shaft which is rotational about a rotational axis and arranged to be connected to a power tool motor for transmitting a rotational movement from the motor to the first output shaft; a power tool attachment part having an input shaft connectable to the first output shaft, a second output shaft and a gear arrangement for transmitting rotational movement from the input shaft to the second output shaft; and fixation means for fixation of the attachment part to the angle head. The fixation means comprises first fixation means arranged to prevent axial displacement of the attachment part relative to the angle head; and second fixation means arranged to prevent rotation about the rotational axis of the attachment part relative to the angle head, which second fixation means is separate from the first fixation means.

Torque transmitting assembly for a power tool

A power wrench includes a cylindrical housing, an electric motor, an output shaft connected to the motor and a power switching device activated by a trigger located on the housing. The trigger is supported on an annular sleeve element coaxially disposed and rotatable relative to the housing for enabling adjustment of the angular position of the trigger relative to the housing. Irrespective of its angular position the trigger is arranged to axially displace a non-rotatable activation ring to activate the power switching device. The housing includes an adjustable angle head supporting the output shaft and arranged to be set in alternative angular positions relative to the housing.

Power wrench with adjustable trigger position

A power wrench includes a cylindrical housing, a motor, and an angle head attached to the housing and supporting an output shaft in a laterally extending position. The angle head is connected to the housing via a swivel coupling to enable rotation of the angle head and adjustment of the angular position of the output shaft relative to the housing. A releasable locking device is included between the angle head and the housing for arresting the angle head in alternative angular positions relative to the housing.

Power wrench with angle drive

A spindle of a drilling tool includes a socket portion having a first axial length (a) of a first diameter (d) for receiving and attaching a drill bit to the spindle. The spindle includes a fluid conduit having a second diameter (d) narrower than (d) for conveying a fluid to the socket portion. An interface space with diameter (d) is formed between the fluid conduit and the drill bit when the drill bit is installed in the socket portion. A fluid conveyor, having a third diameter (d) narrower than (d), connects the fluid conduit to the drill bit to avoid fluid gathering in a periphery of the interface space. The fluid conveyor includes a first O-ring abutting a mouth of the fluid conduit, a second O-ring abutting a mouth of a fluid channel of the drill bit, and a spring between the first and second O-rings.

Power tool

An impeller assembly and a pump for pumping a liquid, including a pump chamber and an impeller arranged to rotate in the pump chamber, the impeller being suspended in a lower end of an axially extending drive shaft unit, wherein the lower end of the drive shaft unit is received in a cylinder-shaped recess of the impeller, wherein the impeller is displaceable back and forth in the axial direction in relation to the drive shaft unit. The impeller further includes an axially extending hole that connects the cylinder-shaped recess and the pump chamber and that the drive shaft unit includes an axially extending pin that projects from the lower end of the drive shaft unit, wherein the pin is arranged in the hole.

Pump for pumping liquid as well as an impeller assembly

The invention relates to a pump for pumping contaminated liquid comprising solid matter, the pump comprising a hydraulic unit (), a drive unit (), and a sealing unit (), the hydraulic unit having a pump chamber () and an impeller () that is suspended in a drive shaft (), said impeller and said drive shaft forming a rotatable unit, the sealing unit comprising a seal housing cover () that delimits said pump chamber () and that forms a seat for a drive shaft sealing assembly (), the seal housing cover () comprising a first gap-delimiting part () and the rotatable unit comprising a second gap-delimiting part (), which jointly define an axially extending gap () situated in the pump chamber. The pump is characterized in that, in each arbitrary radially extending plane taken through said gap (), the first gap-delimiting part () has a broken circular outer gap-delimiting surface () at the same time as the second gap-delimiting part () has a broken circular inner gap-delimiting surface ().

Pump including gap arrangement for improved pumping of solid matter

The present invention relates to a submersible centrifugal pump assembly comprising an impeller suspended in the end of a drive shaft, and driven in rotation relative to an impeller seat which is stationary in normal operation and which defines an axial intake for liquid to be transported by the impeller in rotation. The pump assembly is characterized in that the impeller seat is journalled in a pump housing for limited rotational movements in opposite directions of rotation relative to the pump housing, and in rotation controlled in guide means for limited linear displacements in opposite axial directions relative to the impeller.

Submersible centrifugal pump with normal and ejector modes of operation

The invention relates to a pump for pumping contaminated liquid including solid matter, comprising a pump housing provided with a rotatable impeller suspended in a drive shaft and having at least one vane, and an impeller seat, at least one part of the impeller and the impeller seat being movable in the axial direction in relation to each other. Furthermore, the impeller seat presents at least one groove in the top surface thereof.

Pump for pumping liquids including solid matter

The invention relates to a pump for pumping contaminated liquid including solid matter, comprising an impeller (), which is rotatable in a pump chamber of said pump, the impeller () being movable in the axial direction in relation to a seal housing cover () between a first position adjacent to an impeller seat () and a second position spaced apart from said impeller seat (), said pump also comprising a cavity () defined by the seal housing cover () and the impeller (), and at least one opening gap () connecting said cavity and said pump chamber. Furthermore, said opening gap () has a first flow area when the impeller () is in the first position, and a second flow area bigger than said first flow area when the impeller () is' spaced apart from said first position.

Pump for pumping contaminated liquid including solid matter

The invention relates to a pump for pumping contaminated liquid including solid matter, comprising a pump housing provided with a rotatable impeller () having at least one vane () and an impeller seat (), the impeller seat () presenting at least one recess () in the top surface () thereof, a sheering/cutting action arising between an cutting edge () of said recess () and a lower edge () of the vane () as the impeller () rotates relative to the impeller seat (). Furthermore, the pump also comprises means for guiding the solid matter towards said recess (), the guiding means comprising at least one guide in and at least one projection (), an upper surface () of the guide pin extending from a position contiguous to the most inner part of the vane () of the impeller () towards the impeller seat (), and the projection () protruding from the impeller seat ().

Pump for contaminated liquid

According to the invention the pump impeller comprises a hub ( ) having one or several vanes swept backwards within a pump housing ( ). The latter is provided with one or several relief grooves ( ) on the inside of the pump housing wall. One or several radially directed scraping apparatus ( ) are attached to the pump housing creating narrow slots at the leading edges ( ) of the impeller vanes and causing pollutants on said edges to be fed into the grooves ( ).

Growing community of inventors

Skogås, Sweden

Patrik Leander Andersson