INTERMEDIATE AND ASSEMBLY ASSISTANCE COMPONENTS FOR FLUID DRIVEN TOOLS AND TOOLS INCORPORATING THE SAME

摘要

A flow guide configured for insertion in a cavity defined between an outer
housing
and a nested inner motor housing of a fluid driven tool and a tool
incorporating the same.
The flow guide has a longitudinal axis and includes at least two longitudinal
portions
disposed parallel to the longitudinal axis and defining longitudinal channel
therebetween. At
least one substantially circumferential rib portion connects the at least two
longitudinal
portions at points defining a plane substantially transverse to the
longitudinal axis. A portion
of the at least one rib portion located in the longitudinal channel has a
thickness less than a
width of the cavity surrounding the rib to define a circumferential recess
that permits fluid
communication in the longitudinal channel across the at least one rib. Also
provided is a
fluid driven tool having an outer housing and an inner motor housing nested in
the outer
housing and defining a cavity therebetween. The cavity has a first end with a
first exhaust
passageway and a second end with a second exhaust passageway. The inner motor
housing
has a motor chamber with at least one inlet port for a fluid driven motor and
a fluid inlet, and
an inlet manifold disposed in the cavity. The inlet manifold has a recessed
portion with a
surrounding seal configured to engage the inner motor housing and connect the
fluid inlet to
the at least one inlet port of the inner motor housing. Also provided is a
fluid driven tool
having an outer housing and an inner motor housing nested in the outer
housing. An inner
surface of the outer housing and an outer surface of the ''inner motor housing
have portions
that mate upon nesting the inner motor housing in the outer housing and
provide reinforced
areas for clamping regions of the outer housing located over the reinforced
areas.