Water filter abstract
A water filter including an inlet assembly which comprises a prefiltering
foam tip. The inlet hose includes an adjustable float and a weight
on the end of the hose which allows a given length at the end of
the inlet hose to extend below the surface of the water being filtered.
The water filter further includes a check valve assembly to relieve
pressure buildup inside the pump. A unique lever-action handle,
in combination with a rocking piston, allows efficient filtering
with few moving parts. The filter components are easily replaceable.
The main filter assembly is suspended resiliently at its periphery
to provide shock-absorbing characteristics. The filter also includes
an adaptor base which allows for a direct connect between the vessel
into which water is filter. The water filter also provides a unique
method of storing the inlet hose to render the water filter easy
to carry and prevent foreign objects and debris from entering into
the area of working parts.
Water filter claims
We claim:
1. A lever-action handle in combination with a hand-held portable
water filter, comprising:
a hand-held portable housing having a filter means and a cylinder;
a piston movably disposed inside the cylinder, the piston having
a working face; and
a lever-action handle pivotally connected to the piston for reciprocating
the piston back and forth inside the cylinder and wherein movement
of the piston within the cylinder by the handle causes the working
face to rock back and forth, which moves the working face in and
out of an orientation perpendicular to the longitudinal axis of
the cylinder, and wherein the reciprocation of the piston generates
a pressure differential such that water is drawn into the cylinder
when the piston is moved in a first direction and the water is forced
out of the cylinder when the piston is moved in a second, reciprocal
direction.
2. A lever-action handle according to claim 1 wherein the cylinder
has an open end and a closed end, the open end being free of bearing
elements, allowing the piston to move around unimpededly inside
the cylinder when the piston is reciprocated back and forth.
3. A lever-action handle according to claim 2 further comprising
an O-ring disposed around the periphery of the piston, the O-ring
allowing the piston to rock back and forth while maintaining a water-tight
seal between the piston and the cylinder.
4. A lever-action handle according to claim 1 wherein the handle
includes a door which engages the open end of the cylinder when
the handle is positioned in a compression stroke, the door creating
a protective seal for the open end of the cylinder to prevent foreign
objects and debris from entering into the cylinder.
5. A lever-action handle according to claim 4 wherein the handle
comprises a notch for holding a hose such that when the hose is
placed into the notch, the handle will remain close to the filter
and maintain the door in a closed position.
6. A lever-action handle according to claim 4 wherein the handle
comprises a notch for holding a hose such that when the hose is
placed into the notch, the handle will remain close to the filter
and maintain the door in a closed position.
7. A lever-action handle in combination with a hand-held portable
water filter, comprising:
a hand-held portable housing having a filter means and a cylinder;
a piston movably disposed inside the cylinder, the piston having
a working face;
a lever-action handle pivotally connected to the piston for reciprocating
the piston back and forth inside the cylinder and wherein movement
of the piston within the cylinder by the handle causes the working
face to rock back and forth, which moves the working face in and
out of an orientation perpendicular to the longitudinal axis of
the cylinder; and
wherein the handle includes a door which engages the open end of
the cylinder when the handle is positioned in a compression stroke,
the door creating a protective seal for the open end of the cylinder
to prevent foreign objects and debris from entering into the cylinder.
Water filter description
We claim:
1. A lever-action handle in combination with a hand-held portable
water filter, comprising:
a hand-held portable housing having a filter means and a cylinder;
a piston movably disposed inside the cylinder, the piston having
a working face; and
a lever-action handle pivotally connected to the piston for reciprocating
the piston back and forth inside the cylinder and wherein movement
of the piston within the cylinder by the handle causes the working
face to rock back and forth, which moves the working face in and
out of an orientation perpendicular to the longitudinal axis of
the cylinder, and wherein the reciprocation of the piston generates
a pressure differential such that water is drawn into the cylinder
when the piston is moved in a first direction and the water is forced
out of the cylinder when the piston is moved in a second, reciprocal
direction.
2. A lever-action handle according to claim 1 wherein the cylinder
has an open end and a closed end, the open end being free of bearing
elements, allowing the piston to move around unimpededly inside
the cylinder when the piston is reciprocated back and forth.
3. A lever-action handle according to claim 2 further comprising
an O-ring disposed around the periphery of the piston, the O-ring
allowing the piston to rock back and forth while maintaining a water-tight
seal between the piston and the cylinder.
4. A lever-action handle according to claim 1 wherein the handle
includes a door which engages the open end of the cylinder when
the handle is positioned in a compression stroke, the door creating
a protective seal for the open end of the cylinder to prevent foreign
objects and debris from entering into the cylinder.
5. A lever-action handle according to claim 4 wherein the handle
comprises a notch for holding a hose such that when the hose is
placed into the notch, the handle will remain close to the filter
and maintain the door in a closed position.
6. A lever-action handle according to claim 4 wherein the handle
comprises a notch for holding a hose such that when the hose is
placed into the notch, the handle will remain close to the filter
and maintain the door in a closed position.
7. A lever-action handle in combination with a hand-held portable
water filter, comprising:
a hand-held portable housing having a filter means and a cylinder;
a piston movably disposed inside the cylinder, the piston having
a working face;
a lever-action handle pivotally connected to the piston for reciprocating
the piston back and forth inside the cylinder and wherein movement
of the piston within the cylinder by the handle causes the working
face to rock back and forth, which moves the working face in and
out of an orientation perpendicular to the longitudinal axis of
the cylinder; and
wherein the handle includes a door which engages the open end of
the cylinder when the handle is positioned in a compression stroke,
the door creating a protective seal for the open end of the cylinder
to prevent foreign objects and debris from entering into the cylinder. |