초록

A pump, pump components and method for pumping high pressure fluid with an unobstructed inlet passage during return strokes of the piston and an improved near spherical interface between a piston and a slipper.

대표청구항 ▼

A pump, pump components and method for pumping high pressure fluid with an unobstructed inlet passage during return strokes of the piston and an improved near spherical interface between a piston and a slipper. Feeder, Scout Feeder, etc); Date: Publication date: prior to Oct. 8, 2002; Pp.: 104-105.

A pump, pump components and method for pumping high pressure fluid with an unobstructed inlet passage during return strokes of the piston and an improved near spherical interface between a piston and a slipper. Feeder, Scout Feeder, etc); Date: Publication date: prior to Oct. 8, 2002; Pp.: 104-105. support bar pivotally attached to the first pivot bar; and a second support assembly for maintaining the second leg assembly in the use position, the second support assembly comprising: a second brace structure having a second central pivotal attachment point and at least one second distal pivotal attachment point, the at least one second distal pivotal attachment point pivotally attached to the second leg assembly; and a second support bar having first and second ends, the second end of the second support bar pivotally attached to the second central pivotal attachment point of the second brace structure, and the first end of the second support bar pivotally attached to the second pivot bar. 2. The collapsible table of claim 1 further comprising: the first and second pivot bars comprising substantially cylindrical rods, each having an outside diameter; and the first and second channels each having a channel surface with an inside diameter substantially equivalent to the outside diameter of the first and second pivot bars. 3. The collapsible table of claim 2 further comprising: the first pivot bar secured in the first channel by at least one screw passing through the first pivot bar and into the inner surface of the first channel; and the second pivot bar secured in the second channel by at least one screw passing through the second pivot bar and into the inner surface of the second channel. 4. The collapsible table of claim 1 further comprising: the bottom surface of the table top further having opposing first and second projections separated by a separation distance; the first channel further having a first channel portion formed in the first projection, and a second channel portion formed in the second projection opposite the first channel portion; and the first pivot bar disposed within the first and second channel portions of the first channel, and spanning the separation distance between the first and second projections. 5. The collapsible table of claim 4 further comprising: the second channel having a third channel portion formed in the first projection, and a fourth channel portion formed in the second projection opposite the third channel portion; and the second pivot bar disposed within the third and fourth channel portions of the second channel, and spanning the separation distance between the first and second projections. 6. The collapsible table of claim 1 further comprising: the first end of the first support bar having a first aperture with a first diameter sufficient to receive the first pivot bar; the first pivot bar penetrating the first aperture in the first support bar; the first end of the second support bar having a second aperture with a second diameter sufficient to receive the second pivot bar; and the second pivot bar penetrating the second aperture in the second support bar. 7. The collapsible table of claim 1 further comprising: the first pivot bar disposed substantially in parallel with the second pivot bar, and separated from the second pivot bar by a separation distance; and a handle member having a first handle end secured to the first pivot bar and a second handle end secured to the second pivot bar, the handle member disposed substantially perpendicular to the first and second pivot bars and spanning the separation distance between the first and second pivot bars. 8. The collapsible table of claim 7 further comprising: the first handle end of the handle member having a first notch straddling the first end of the first support bar; and the second handle end of the handle member having a second notch straddling the first end of the second support bar. 9. The collapsible table of claim 1 wherein the table top further comprises a blow-molded thermoplastic material. 10. A collapsible table comprising: a molded table top having: a substantially planar top surface; a bottom surface opposite the top surface, the bottom surface having opposing first and second molded projections separated by a separation distance; a first channel comprising a first channel portion formed in the first molded projection, and a second channel portion formed in the second molded projection opposite the first channel portion, the first and second channel portions having a first inside diameter; a second channel comprising a third channel portion formed in the first molded projection, and a fourth channel portion formed in the second molded projection opposite the third channel portion, the third and fourth channels having a second inside diameter; a first pivot bar disposed within the first and second channel portions of the first channel and spanning the separation distance between the first and second projections, the first pivot bar comprising a substantially cylindrical rod having a first outside diameter that is substantially equivalent to the first inside diameter of the first and second channel portions; a second pivot bar disposed within the third and fourth channel portions of the second channel and spanning the separation distance between the first and second projections, the second pivot bar comprising a substantially cylindrical rod having a second outside diameter that is substantially equivalent to the second inside diameter of the third and fourth channel portions; opposing first and second frame members secured to the bottom surface of the table top; opposing first and second leg assemblies disposed between and pivotally attached to the first and second frame members, the first and second leg assemblies movable between a use position and a storage position; a first support assembly for maintaining the first leg assembly in the use position, the first support assembly comprising: a first brace structure having a first central pivotal attachment point and at least one first distal pivotal attachment point, the at least one first distal pivotal attachment point pivotally attached to the first leg assembly; and a first support bar having first and second ends, the second end of the first support bar pivotally attached to the first central pivotal attachment point of the first brace structure, and the first end of the first support bar pivotally attached to the first pivot bar; and a second support assembly for maintaining the second leg assembly in the use position, the second support assembly comprising: a second brace structure having a second central pivotal attachment point and at least one second distal pivotal attachment point, the at least one second distal pivotal attachment point pivotally attached to the second leg assembly; and a second support bar having first and second ends, the second end of the second support bar pivotally attached to the second central pivotal attachment point of the second brace structure, and the first end of the second support bar pivotally attached to the second pivot bar. 11. The collapsible table of claim 10 further comprising: the first end of the first support bar having a first aperture with a first diameter sufficient to receive the first pivot bar; the first pivot bar penetrating the first aperture in the first support bar; the first end of the second support bar having a second aperture with a second diameter sufficient to receive the second pivot bar; and the second pivot bar penetrating the second aperture in the second support bar. 12. The collapsible table of claim 10 further comprising: the first pivot bar disposed substantially in parallel with the second pivot bar, and separated from the second pivot bar by a separation distance; and a handle member having a first handle end secured to the first pivot bar and a second handle end secured to the second pivot bar, the handle member disposed substantially perpendicular to the first and second pivot bars and spanning the separation distance between the first and second pivot bars. 13. The collapsible table of claim 12 further comprising: the