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US 6,849,179 B1Granted
Internal filter
AssigneeHydro-Gear Limited Partnership
InventorsMichael Taylor, Jeffrey A. Wilson, Neil Brandenburg
Life of this patent
Estimating the term…
Abstract
An internal filter that may be installed or removed from the outside of the housing. The internal filter may also cooperate with an inlet passage for a charge pump.
Claims13
A filter positioned within an opening in a housing between a first fluid side and a second fluid side, comprising:
- a filter body having a first end, a second end and a sidewall joining the first end and the second end, the sidewall of the filter including a plurality of openings and the second end of the filter including a first support section, a second support section and a mid section connecting the first support section and the second support section;
- a filter media covering the openings in the sidewall of the filter body, the media being capable of removing impurities from fluid flowing from the first fluid side to the second fluid side through the openings;
- the first support section including a passage and the mid section including at least one aperture, whereby fluid is capable of flowing from the first fluid side through the filter media to the passage and though the passage in the first support section and the aperture in the mid section to the second fluid side, and
- the second support section being capable of sealing the opening in the housing, wherein the filter media removes impurities from the fluid before it exits the filter.
1 more element
A filter positioned within an opening of a hydraulic drive device between internal porting and a sump of the hydraulic drive device, comprising:
- a filter body having a first end, a second end and a sidewall joining the first end and the second end, the sidewall of the filter including a plurality of openings and the second end of the filter including a first support section, a second support section and a mid section connecting the first support section and the second support section;
- a filter media covering the openings in the sidewall of the filter body, the media being capable of removing impurities from fluid flowing from the sump to the porting through the openings;
- the first support section including a passage and the mid section including at least one aperture, whereby fluid is capable of flowing from the sump through the filter media to the passage and though the passage in the first support section and the aperture in the mid section to the porting;
- and
- the second support section being capable of sealing the opening of the hydraulic drive device, wherein the filter media removes impurities from the fluid before it exits the filter.
2 more elements
A hydraulic drive device comprising:
- a housing containing a sump;
- a center section located within the sump, the center section including porting that is in fluid communication with the sump;
- an opening in the housing, the opening being in fluid communication with the sump and the porting;
- a filter vertically inserted within the opening and removably attached to the housing for use in filtering fluid flowing between the sump and the porting comprising:
- a filter body having a first end, a second end and a sidewall joining the first end and the second end, the sidewall of the filter including a plurality of openings and the second end of the filter including a first support section, a second support section and a mid section connecting the first support section and the second support section;
- a filter media covering the openings in the sidewall of the filter body, the media being capable of removing impurities from fluid flowing from the sump to the porting through the openings;
- the first support section including a passage and the mid section including at least one aperture, whereby fluid is capable of flowing from the sump through the openings of the filter to the passage and though the passage in the first support section and the aperture in the mid section to the porting;
- the second support section being capable of sealing the opening in the housing;
- the first support section and the second support section of the filter capable of matingly cooperating with the housing;
- and
- wherein the filter media removes impurities from the fluid before it exits the filter to the porting.
8 more elements
An apparatus for use in filtering fluid flowing between a first fluid side and a second fluid side of a device, comprising:
- a filter body removably inserted within an opening of a housing, the filter body having a first end, a second end and a sidewall joining the first end and the second end, the sidewall of the filter including a plurality of openings and the second end of the filter including a first support section, a second support section and a mid section connecting the first support section and the second support section;
- a filter media covering the openings in the sidewall of the filter body, the media being capable of removing impurities from fluid flowing from the first fluid side to the second fluid side through the openings;
- the first support section including a passage and the mid section including at least one aperture, whereby fluid is capable of flowing from the first fluid side through the filter media to the passage and though the passage in the first support section and the aperture in the mid section to the second fluid side;
- the first support section and the second support section of the filter capable of matingly cooperating with an opening in the housing;
- and
- the second support section being capable of sealing the opening in the housing, wherein the filter media removes impurities from the fluid before it exits the filter to the second fluid side.
3 more elements
Dependencies are inferred from the claim text.