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US 9,810,206 B2Granted
Quick connector for hydraulic hose coupling
AssigneeCaterpillar Inc.
InventorsPatrick E. Considine, Jr., Carl H. Rempert
Life of this patent
Estimating the term…
Abstract
A hydraulic fluid line coupling system is disclosed. The coupling may include a female fitting, a male fitting, first and second elastomeric seals between the female fitting and male fitting, and a cylindrical collar surrounding the female fitting, male fitting, and first and second elastomeric seals.
Claims15
A hydraulic fluid line coupling system, comprising:
- a female fitting comprising an inner core, a radially outwardly directed rib, a plurality of flexible fingers integrally connected to and cantilevered away from the radially outwardly directed rib, and a receiving space radially positioned between the inner core and the plurality of flexible fingers integrally connected to and cantilevered away from the radially outwardly directed rib, the receiving space longitudinally positioned between a cylindrical distal end and the radially outwardly directed rib;
- a male fitting received in the receiving space of the female fitting;
- and
- a collar surrounding the female fitting and the male fitting, wherein the female fitting further includes a radially outwardly directed shoulder, wherein a the distal end of the male fitting engages the radially outwardly directed shoulder rib of the female fitting.
1 more element
A method of sealing a hydraulic fluid line coupling system, comprising:
- inserting a nonthreaded male fitting into a receiving space of a nonthreaded female fitting, the nonthreaded female fitting comprising an inner core, a radially outwardly directed rib, a plurality of flexible fingers integrally connected to and cantilevered away from the radially outwardly directed rib, the receiving space radially positioned between the inner core and the plurality of flexible fingers integrally connected to and cantilevered away from the radially outwardly directed rib, the receiving space longitudinally positioned between a cylindrical distal end and the radially outwardly directed rib;
- sealing the nonthreaded male fitting to the nonthreaded female fitting using first and second elastomeric rings;
- securing the nonthreaded male fitting to the nonthreaded female fitting using a collar;
- extending a plurality of fingers from the female fitting to define a receiving space between the fingers and a center core of the nonthreaded female fitting, and wherein inserting the nonthreaded male fitting involves sliding the nonthreaded male fitting into the receiving space;
- and
- providing a plurality of radially inwardly directed barbs on the plurality of fingers, and providing a plurality of circumferential extended grooves in the nonthreaded male fitting, and the method further includes positioning the plurality of barbs in the plurality of circumferential external grooves of the nonthreaded male fitting.
3 more elements
A machine, comprising:
- a chassis;
- an engine mounted on the chassis;
- a hydraulic fluid pump powered by the engine;
- a hydraulic cylinder in fluid communication with the hydraulic fluid pump;
- and
- a first hydraulic fluid tube and a second hydraulic fluid tube connecting the hydraulic fluid pump and the hydraulic cylinder;
- and
- a hydraulic fluid line coupling system connecting the first hydraulic fluid tube and the second hydraulic fluid tube together, each hydraulic fluid line coupling system including a nonthreaded male fitting having a hose end comprising a recess configured to circumferentially engage an outer circumference of the first hydraulic fluid line, the male fitting received in a receiving space of a nonthreaded female fitting, the nonthreaded female fitting having a proximal end comprising a recess configured to circumferentially engage an outer circumference of the second hydraulic fluid tube, the nonthreaded female fitting further comprising an inner core, a radially outwardly directed rib, a plurality of flexible fingers integrally connected to and cantilevered away from the radially outwardly directed rib, the receiving space radially positioned between the inner core and the plurality of flexible fingers integrally connected to and cantilevered away from the radially outwardly directed rib, the receiving space longitudinally positioned between a cylindrical distal end and the radially outwardly directed end, a first elastomeric seal and a second elastomeric seal between the nonthreaded female fitting and the nonthreaded male fitting, and a collar surrounding the nonthreaded female fitting, the nonthreaded male fitting, the first elastomeric seal and the second elastomeric seal.
5 more elements
Dependencies are inferred from the claim text.