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Swaging tool for axially swaged fittings
| Details |
Inventors: Hyatt, Arthur J.; Hsieh, Biing-Kwang Kelvin; Wootton, Earl T.;
Assignee: The Deutsch Company (Santa Monica, CA)
Primary Examiner: Watson; Robert C.
Assistant Examiner:
Attorney, Agent or Firm: Pretty, Schroeder & Poplawski
A swaging tool for swaging an axially swaged fitting for connecting tubes and pipes is disclosed. The tool comprises a housing and a piston movable in opposite axial directions within the housing. A first engaging member in the form of a U-shaped yoke is formed on the outer surface of the housing. A second engaging member, also in the form of a U-shaped yoke, is formed on the outer surface of the piston and is adapted to slide within slots in the outer surface of the housing. Both of these yokes are configured to allow either side of each yoke to engage a portion of the fitting to swage it when the yoke of the second engaging member is moved toward the yoke of the first engaging member. |
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DETAILED DESCRIPTION The present invention provides a swaging tool for use in swaging axially swaged hydraulic fittings and the like to join two or more tubes together.
The three-piece design of the tool, in combination with other features described below, contributes to a balanced swaging tool that is extremely compact and lightweight, thus enabling the effective swaging of fittings in confined and otherwise inaccessible areas.
The swaging tool of the present invention furthermore is intended to be simple to operate, reliable in use, relatively inexpensive to manufacture and low in maintenance.
The swaging tool is designed for use with axially swaged fittings of the type having a sleeve for receiving a tube and a swaging ring.
When the ring is moved axially over the sleeve, it applies a radial force to the sleeve which swages the sleeve to the tube.
The swaging tool may be used with fittings employing a sleeve with two swaging rings, a sleeve with a single swaging ring, or other appropriate configurations and combinations to join the fitting to one or more tubes.
The swaging tool comprises a housing having an inner surface and an outer surface, and a piston that is movable in opposite axial directions within the housing.
In the preferred embodiment, the housing is cylindrical in shape, and the piston has a cylindrical outer surface in axial sliding engagement with the inner surface of the housing.
The housing preferably has a closed end and an open end which is connected by threads to a cap, which encloses the piston within the housing.
This cap is connected to a source of hydraulic pressure for selectively moving the piston axially within the housing from the open end to the closed end of the housing.
A spring or other appropriate biasing means is interposed between the closed end of the housing and the piston to normally bias the piston toward the open end of the housing.
In accordance with the invention, a first engaging member is formed on the outer surface of the housing adjacent to the closed end for engaging the ring or the sleeve to restrain it from axial movement
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