Fluid handling – With repair – tapping – assembly – or disassembly means – Tapping a pipe – keg – or apertured tank under pressure
Patent
1980-10-31
1983-12-13
Walton, George L.
Fluid handling
With repair, tapping, assembly, or disassembly means
Tapping a pipe, keg, or apertured tank under pressure
137321, 81 34, 81 31R, 81 90C, 81446, 138 89, 220284, 220323, F16L 5510
Patent
active
044200129
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a device for use in connection with tapping off fluid from or filling fluid into a container through an internally threaded tapping or filling hole provided in a wall of the container, and adapted to be closed by means of an externally threaded generally cup-shaped plug having an outwardly open cavity in which an implement may be inserted for rotating the plug.
More particularly, the invention relates to such a device of the kind comprising a bell-like housing which is adapted to be removably mounted with an open end thereof over said tapping or filling hole and which is provided with an opening through which fluid may be fed into or discharged from the housing, and a tool for manually operating the plug from a position outside the housing, said tool comprising a shaft which extends slidably and rotatably through a portion of the housing opposite to the open end of the housing, handle means provided at an outer end of said shaft, and plug holding means provided at an inner end of said shaft, said plug holding means comprising expansion means insertable into said cavity in the plug, a carrier for said expansion means, said carrier being mounted on the tool shaft, and actuating means for the expansion means, said actuating means being operative to expand the expansion means into frictional contact under pressure with the side wall of the cavity in the plug.
A device of said kind is disclosed in U.S. patent application Ser. No. 947,091, now U.S. Pat. No. 4,214,599. This device makes it possible in an easy manner to remove a plug, or bung, from a container, such as a drum, and to tapp off fluid from or fill fluid into the container, and then to reinsert the plug into the bung hole of the container without having to run the risk of coming into direct contact with the fluid in question.
In said prior device, the actuating means for the expansion means are formed by an end portion of a rod which is displaceably mounted within the shaft of the tool. Although said prior device has proved to operate satisfactorily, the type of actuating means used have been found to cause certain difficulties. Therefore, the present invention has for its purpose to provide an improved device of the kind initially specified, which eliminates said difficulties.
According to the invention, for this purpose, there is provided a device of said kind, wherein the carrier for the expansion means is mounted for limited movement on an inner end portion of the tool shaft, while the actuating means for the expansion means are rigidly connected to the tool shaft.
The carrier could preferably be mounted for limited rotary movement on the tool shaft. Additionally, the actuating means could suitably comprise cam means rigidly connected to the tool shaft and preferably formed as integral portions of the tool shaft.
Below the invention will be described in further detail, reference being had to the accompanying drawings, in which:
FIG. 1 shows a perspective view of a device according to one embodiment of the invention, selected by way of example, portions of the device being cut away for the purpose of clarification,
FIG. 2 is a side elevation, partly in section, of the device according to FIG. 1, showing the device mounted over a bung hole in a wall of a container and with a tool of the device in engagement with a bung threaded into the bung hole and closing said hole,
FIG. 3 is a side elevation, partly in section, corresponding to FIG. 2, but illustrating the tool of the device in a retracted position distant from the bung hole and wherein the device permits free passage for fluid through the same to and from the bung hole,
FIG. 4 is an end view of the tool, as viewed from the inner end thereof,
FIG. 5 is a sectional lateral view of an inner end portion of the tool, and
FIG. 6 is an end view of retention means of the device by which the device may be locked to an annular flange surrounding the bung hole.
The device, shown in the drawings, comprises a bell-like housing 10 forming the body of the device and having an
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Tekno-Detaljer Sture Carlsson AB
Walton George L.
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