Fluid holder and electromechanical lubricator employing same
First Claim
1. A fluid holder comprising:
- a housing having an inner surface defining a cavity, the housing defining at least one fluid outlet in communication with the cavity;
a piston in slidable engagement with the inner surface of the housing, the piston having first and second opposed surfaces with a threaded opening extending between the first and second opposed surfaces of the piston, the first surface of the piston and the inner surface of the housing defining a fluid chamber in the cavity in communication with the at least one fluid outlet, and the piston being movable to expand or contract the fluid chamber; and
a threaded member engageable with the threaded opening of the piston, a first portion of the threaded member extending from the first surface of the piston into the fluid chamber, and a second portion of the threaded member extending from the second surface of the piston away from the fluid chamber, the threaded member being rotatably coupled to the housing, at a position on the first portion of the threaded member and spaced apart from the piston, for rotation in the threaded opening of the piston, wherein the housing is configured to accommodate a force from the first portion of the threaded member such that rotation of the threaded member in a fluid chamber contracting direction causes the force to be exerted by the first portion of the threaded member on the housing and on the piston to move the piston in the cavity to contract the fluid chamber.
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Accused Products
Abstract
A fluid holder includes: a housing having an inner surface and at least one fluid outlet; a piston in slidable engagement with the inner surface and having first and second opposed surfaces with a threaded opening extending therebetween, the first surface of the piston and the inner surface of the housing defining a fluid chamber in communication with the at least one fluid outlet; and a threaded member engageable with the threaded opening, a first portion of the threaded member extending from the first surface of the piston, the threaded member being rotatably coupled to the housing on the first portion of the threaded member for rotation in the threaded opening of the piston such that rotation of the threaded member causes a force to be exerted by the threaded member on the housing and on the piston to expand or contract the fluid chamber.
89 Citations
15 Claims
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1. A fluid holder comprising:
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a housing having an inner surface defining a cavity, the housing defining at least one fluid outlet in communication with the cavity; a piston in slidable engagement with the inner surface of the housing, the piston having first and second opposed surfaces with a threaded opening extending between the first and second opposed surfaces of the piston, the first surface of the piston and the inner surface of the housing defining a fluid chamber in the cavity in communication with the at least one fluid outlet, and the piston being movable to expand or contract the fluid chamber; and a threaded member engageable with the threaded opening of the piston, a first portion of the threaded member extending from the first surface of the piston into the fluid chamber, and a second portion of the threaded member extending from the second surface of the piston away from the fluid chamber, the threaded member being rotatably coupled to the housing, at a position on the first portion of the threaded member and spaced apart from the piston, for rotation in the threaded opening of the piston, wherein the housing is configured to accommodate a force from the first portion of the threaded member such that rotation of the threaded member in a fluid chamber contracting direction causes the force to be exerted by the first portion of the threaded member on the housing and on the piston to move the piston in the cavity to contract the fluid chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification