| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hand pump preventing leak due to inclination of a piston rod. <P>SOLUTION: In this hand pump, an annular packing member 33 including an annular recess part 34 on an end surface and including a lip part 35 capable of sufficiently deforming in a radial direction by the recess part 34 in an inner circumference side of the recess part 34 is installed on a through part 30 of a delivery chamber 5 through which a piston rod 8 passes. Consequently, even if the piston rod 8 is inclined when rotary motion of an operation lever 18 is converted to reciprocating linear motion along a moving direction of a piston 7, the through part 30 is sealed by the packing member 33 while permitting inclination. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
