This invention relates to a rivet setting tool, and particularly to a hand-operated rivet setting tool.
The present invention relates to a hand-operated rivet setting tool.
According to one embodiment of the present invention, a hand-operated rivet setting tool, having an upper handle, a lower handle, a housing which is connected to the lower handle at its first end and houses a pump assembly and a flexible reservoir, the pump assembly, connected to a flexible reservoir, the front assembly for setting a rivet, having a nose tube connected to a hydraulic cylinder of the pump assembly, and a lever assembly.
According to an embodiment, the lever assembly and at least one of the handles are operationally connected to the pump assembly.
According to an embodiment, the pump assembly is sufficiently designed to advance the hydraulic cylinder with the nose tube to set the rivet when the lever of the lever assembly is in a first position.
According to an embodiment, the pump assembly is sufficiently designed to open a passage for oil to return into the flexible reservoir and the hydraulic cylinder with the nose tube to retrieve toward the housing when the lever of the lever assembly is in a second position.
According to an embodiment, the tool's housing is sufficiently designed to fully enclose the flexible reservoir during operation of the tool.
According to an embodiment, the tool's housing is made out of metal.
According to an embodiment, the nose tube is sufficiently designed to rotate 360 degrees around the tool's horizontal axis.
According to an embodiment, a combination of the hydraulic cylinder with the nose tube is sufficiently designed to rotate 360 degrees around the tool's horizontal axis.
According to an embodiment, the pump assembly further comprises a high-pressure relieve subassembly which is operationally connected to the lever assembly.
According to an embodiment, the high-pressure relieve subassembly is sufficiently designed to substantially eliminate additional exertion required to bring the handles together when the lever of the lever assembly is in a first position.
According to an embodiment, the high-pressure relieve subassembly is externally adjustable.
According to an embodiment, the pump assembly further comprises at least one ball valve to control a movement of a fluid.
The present invention will be further explained with reference to the attached drawings, wherein like structures are referred to by like numerals throughout the several views. The drawings shown are not necessarily to scale, with emphasis instead generally being placed upon illustrating the principles of the present invention.
Detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely illustrative of the invention that may be embodied in various forms. In addition, each of the examples given in connection with the various embodiments of the invention are intended to be illustrative, and not restrictive. Further, the figures are not necessarily to scale, some features may be exaggerated to show details of particular components. In addition, any measurements, specifications and the like shown in the figures are intended to be illustrative, and not restrictive. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.
In an embodiment, during a first operation mode, when a lever of a lever assembly 220 is a first position, closing and opening movements of the handles, 201 and 202, engage the pump shaft 218 of the pump assembly. In an embodiment, the engagement of the pump shaft 218 causes to push on a fluid in a chamber 223, causing a ball valve 222 to be activated. In an embodiment, the activation of the ball valve 222 allows the fluid to enter a second chamber 224 and press on the jaw pusher 216. In an embodiment, the activation of the ball valve 222 allows the fluid to enter in a space between the piston part 214 and walls of the hydraulic cylinder 206 and to cause the hydraulic cylinder 206 with the nose tube 209 to extend forward. In an embodiment, the nosepiece 217, which is connected to the nose tube 209, extends along a rivet stem forward. In an embodiment, the closing and opening movements of the handles causes more fluid to exit the flexible reservoir 205. In an embodiment, the flexible reservoir may collapse when substantially all fluid exits the reservoir. In embodiment, the shield 210, which is connected to the hydraulic cylinder 206 also extends forward with the movement of the hydraulic cylinder 206 along the shroud, or the pinch shield, 204. In an embodiment, a distance traveled by the shield 210 along the shroud 204 is less than a distance traveled by the hydraulic cylinder 206, thus protecting the flexible reservoir 205 from being exposed to the potentially damaging external physical or environmental factors. In an embodiment, the extension of the nosepiece 217 is continued until the rivet is set and the rivet stem is broken off.
In an embodiment, after the rivet is set and during a second operation mode, the lever of the lever assembly 220 is moved into a second position. In an embodiment, switching the lever to the second position relieves bias spring crowd 219 inside the pump shaft 218 and allows the upper handle 201 and the pump shaft 218 to be easily pushed against the pump shaft nut 203, causing a ball valve 221 the ball valve 222 to open and allowing the pressurized fluid between walls of the hydraulic cylinder 206 and the piston part 214 of the piston-puller shaft 213 to return to the initial state prior to the operation of the tool. In an embodiment, substantially all fluid returns to the flexible reservoir 205. In an embodiment, a spring 226 causes the nose tube 209 to return to its pre-extended position, and consequently may additionally facilitate the return of the hydraulic cylinder 206 and the shield 210 to their pre-extended positions.
In an embodiment, some of the extending parts of the tool, such as the shield 210, the hydraulic cylinder 206, and the nose tube 209, may additionally rotate three hundred degrees (360°) around the tool's horizontal axis.
In an embodiment, a fluid used in the tool may be an oil. In an embodiment, the fluid may be any hydraulic liquid. The hydraulic liquids may include synthetic compounds, mineral oil, water, and water-based mixtures,—oils, butanol, esters (e.g. phthalates, like DEHP, and adipates, like bis(2-ethylhexyl) adipate), polyalkylene glycols (PAG), phosphate esters (e.g. tributylphosphate), silicones, alkylated aromatic hydrocarbons, polyalphaolefins (PAO) (e.g. polyisobutenes), corrosion inhibitors, and others.
Number | Name | Date | Kind |
---|---|---|---|
3713321 | La Pointe | Jan 1973 | A |
4031619 | Gregory | Jun 1977 | A |
4086802 | Ewig, Jr. | May 1978 | A |
4248077 | Gregory | Feb 1981 | A |
4263801 | Gregory | Apr 1981 | A |
4342216 | Gregory | Aug 1982 | A |
4520648 | Gregory | Jun 1985 | A |
4653308 | Gregory | Mar 1987 | A |
4735048 | Gregory | Apr 1988 | A |
5425164 | El Dessouky | Jun 1995 | A |
5682659 | Chang | Nov 1997 | A |
6532635 | Gregory | Mar 2003 | B1 |
7159290 | Liu | Jan 2007 | B1 |
Number | Date | Country | |
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20100257713 A1 | Oct 2010 | US |