Back to results
US 6,602,061 B2Granted
Easy-to-hold hand pump
OwnerLouis Chuanginventor
Life of this patent
Estimating the term…
Abstract
A hand pump includes a head, a cylinder, a piston rod, a first handle, and a second handle. The head includes a valve-engaging portion for engaging with a valve of an article to be inflated. A first end of the cylinder is connected to the head. A piston is securely mounted to a first end of the piston rod for reciprocation in the cylinder. The first handle is securely attached to a second end of the piston rod that extends beyond a second end of the cylinder. The second handle is attached to the head to provide an auxiliary grip.
Claims17
A hand pump comprising:
- a head including a valve-engaging portion for engaging with a valve of an article to be inflated, with the head further including two positioning holes;
- a cylinder including a first end connected to the head and a second end;
- a piston rod including a first end and a second end extending beyond the second end of the cylinder;
- a piston secured to the first end of the piston rod for reciprocation in the cylinder;
- a first handle attached to the second end of the piston rod;
- and
- a second handle pivotally mounted to the head and including a protrusion formed thereon for releasable engagement in one of the positioning holes in an inoperative position thereof and for releasable engagement in the remaining one of the positioning holes in an operative position thereof.
4 more elements
A hand pump comprising:
- a head including a valve-engaging portion for engaging with a valve of an article to be inflated;
- a cylinder including a first end connected to the head and a second end;
- a piston rod including a first end and a second end extending beyond the second end of the cylinder;
- a piston secured to the first end of the piston rod for reciprocation in the cylinder;
- and
- a handle comprising an engaging portion securely connected to the second end of the piston rod, a grip portion extending from the engaging portion at an angle, and a trigger-shaped fingerrest extending downward from a lower side of the engaging portion.
3 more elements
A hand pump comprising:
- a head including a valve-engaging portion for engaging with a valve of an article to be inflated;
- an outer cylinder including a first end connected to the head and a second end;
- an inner cylinder including a first end and a second end;
- a first piston secured to the first end of the inner cylinder for reciprocation in the outer cylinder;
- a piston rod including a first end and a second end extending beyond the second end of the cylinder;
- a second piston secured to the first end of the piston rod for reciprocation in the inner cylinder;
- and
- a handle comprising an engaging portion securely connected to the second end of the piston rod, the handle further comprising a grip portion extending from the engaging portion and being at an angle with the engaging portion, the engaging portion of the handle comprising a fingerrest extending downward from a lower side thereof.
5 more elements
Dependencies are inferred from the claim text.