[특허]Tire inflation system

Aperia Technologies, Inc.

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특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Tire inflation system

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F04C-025/00 F04B-049/08 F16H-025/08 H02K-007/18 F04B-009/04 B60C-023/00 B60C-023/12 F17D-003/00 B60S-005/04 F04B-017/00 F16F-015/14
미국특허분류(USC)	417/413.1;
출원번호	US-0797826 (2013-03-12)
등록번호	US-9039392 (2015-05-26)
발명자 / 주소	Richardson, Brandon Carlberg, Dave Shelander, Ace
출원인 / 주소	Aperia Technologies, Inc.
대리인 / 주소	Schox, Jeffrey
인용정보	피인용 횟수 : 3 인용 특허 : 99

초록
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A tire inflation system including a drive mechanism having a rotational axis, a pump cavity positioned a radial distance away from the axis of rotation, and a force translator coupling the rotational axis to the pump cavity. The drive mechanism includes a cam comprising an arcuate bearing surface having a non-uniform curvature, the cam rotatable about the rotational axis, and an eccentric mass couple to the cam that offsets a center of mass of the drive mechanism from the rotational axis. The pump cavity is rotatably coupled to the cam, wherein the pump cavity includes an actuating element and a chamber. The force translator couples the arcuate bearing surface to the actuating element, wherein the force translator includes an axis having an arcuate position fixed to an arcuate position of the pump cavity.

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1. A tire inflation system comprising: a housing configured to statically mount to a rotating surface, the rotating surface configured to rotate relative to a gravity vector, the housing defining a housing interior;a drive mechanism having a rotational axis, the drive mechanism rotatably coupled to the housing such that the drive mechanism rotates relative to the housing, the drive mechanism comprising: a) a cam comprising an arcuate bearing surface having a non-uniform curvature, the cam rotatable about the rotational axis; andb) an eccentric mass coupled to the cam that offsets a center of mass of the drive mechanism from the rotational axis;a pump cavity positioned a radial distance away from the axis of rotation and rotatably coupled to the drive mechanism, such that the pump cavity rotates about the cam, the pump cavity comprising an actuating element and a chamber;a force translator coupling the arcuate bearing surface to the actuating element, the force translator comprising an axis having an arcuate position fixed to an arcuate position of the pump cavity about the rotational axis, such that the force translator rotates with the pump cavity about the drive mechanism; anda water-selective membrane fluidly connecting an ambient environment to a housing interior, wherein an inlet of the pump cavity is fluidly connected to the housing interior. 2. The tire inflation system of claim 1, wherein the force translator comprises a rotation axis, wherein an arcuate position of the rotation axis is fixed relative to the pump cavity. 3. The tire inflation system of claim 2, wherein the force translator comprises a roller in non-slip contact with the arcuate bearing surface of the cam. 4. The tire inflation system of claim 3, wherein the force translator further comprises a piston rotatably connected to the rotation axis, wherein the actuating element comprises the piston. 5. The tire inflation system of claim 4, wherein the actuating element comprises a diaphragm. 6. The tire inflation system of claim 5, wherein the diaphragm comprises a rolling diaphragm. 7. The tire inflation system of claim 1, wherein the arcuate bearing surface has a first section having high curvature adjacent a second section having low curvature. 8. The tire inflation system of claim 7, wherein the arcuate bearing surface further comprises a third section between the first and second sections, the third section having curvature varying from a low curvature proximal the second section to a high curvature proximal the first section. 9. The tire inflation system of claim 8, wherein the arcuate bearing surface comprises an outer perimeter of the cam. 10. The tire inflation system of claim 7, further comprising a torque stabilization mechanism configured to accommodate a force of the actuating element on the cam during a return stroke. 11. The tire inflation system of claim 10, wherein the drive mechanism further comprises a mass couple operable in: a coupled mode wherein the mass couple connects the eccentric mass to the cam; anda decoupled mode wherein the mass couple disconnects the eccentric mass from the cam. 12. The tire inflation system of claim 11, wherein the mass couple couples to an interior bearing surface of the cam, wherein: in the coupled mode, the mass couple is statically coupled to an interior bearing surface of the cam, andin the decoupled mode, the mass couple is rotatably coupled to the interior bearing surface. 13. The tire inflation system of claim 11, wherein the torque stabilizing mechanism comprises a profiled channel defined between the interior bearing surface and the mass couple, the profiled channel having a low clearance section and a high clearance section, the torque stabilizing mechanism further comprising a mobile element having a dimension substantially equal to the low clearance section and smaller than the high clearance section, the mobile element located within the profiled channel, wherein the torque stabilizing mechanism switches the mass couple between: the coupled mode, wherein the mobile element is located in the low clearance section and retains a position of the mass couple with the interior bearing surface; andthe decoupled mode, wherein the mobile element is located in the high clearance section and permits relative motion between the mass couple and the interior bearing surface. 14. The tire inflation system of claim 13, wherein the high clearance section is substantially radially aligned with the first section of the arcuate bearing surface. 15. The tire inflation system of claim 1, further comprising a second pump cavity comprising a second actuating element and a second chamber; and a second force translator coupling the arcuate bearing surface to the second actuating element, the second force translator comprising a second axis having a second arcuate position fixed to an arcuate position of the second pump cavity. 16. The tire inflation system of claim 15, further comprising a passive pressure regulation system comprising a passive valve fluidly connected to a reservoir, the reservoir fluidly connected to an outlet of the first pump cavity, the passive valve having a opening threshold pressure and a closing threshold pressure lower than the opening threshold pressure, the passive valve operable between: an open mode in response to a reservoir pressure exceeding the opening threshold pressure, wherein the passive valve permits fluid flow from the reservoir; anda closed mode in response to a reservoir pressure falling below the closing threshold pressure, wherein the passive valve prevents fluid flow from the reservoir. 17. The tire inflation system of claim 16, wherein the passive pressure regulation system further comprises a fluid manifold fluidly connecting the first pump cavity, the second pump cavity, and a reservoir fluidly coupled to the first and second pump cavities, wherein the passive valve is located within the fluid manifold, wherein: in the open mode, the passive valve permits fluid flow from the reservoir to the first and second pump cavities; andin the closed mode, the passive valve prevents fluid flow from the reservoir to the first and second pump cavities. 18. The tire inflation system of claim 17, wherein the second actuating element comprises a larger actuating area than the first actuating element. 19. The tire inflation system of claim 18, wherein an inlet to the first pump cavity is fluidly connected to an outlet from the second pump cavity. 20. The tire inflation system of claim 17, further comprising a frame statically connecting the first axis with the second axis, the frame operable between: a pumping position wherein the frame places the first force translator in non-slip contact with the arcuate bearing surface, wherein the second force translator is connected to the arcuate bearing surface through the first force translator and the frame; anda non-pumping position, wherein the frame disconnects the first force translator from the arcuate bearing surface and slidably couples the second force translator to the arcuate bearing surface. 21. The tire inflation system of claim 20, wherein a frame center is located at a first radial position in the pumping position and at a second radial position in the non-pumping position, wherein the first radial position is different from the second radial position. 22. The tire inflation system of claim 20, wherein the second pump cavity is operable between: a compressed position wherein the second actuating element is substantially proximal a closed end of the second chamber;a recovered position wherein the second actuating element is located at a first position distal a closed end of the second chamber; anda pressurized position wherein the second actuating element is located at a second position distal the chamber, the second position further from the chamber than the first position, wherein the second actuating element is placed in the pressurized position in response to a pressure of the reservoir surpassing the opening pressure, wherein the frame is placed in the non-pumping position when the second pump cavity is placed in the pressurized position. 23. A tire inflation system comprising: a drive mechanism having a rotational axis, the drive mechanism comprising: a) a cam comprising an arcuate bearing surface having a non-uniform curvature, the cam rotatable about the rotational axis; andb) an eccentric mass coupled to the cam that offsets a center of mass of the drive mechanism from the rotational axis;a pump cavity positioned a radial distance away from the axis of rotation and rotatably coupled to the drive mechanism, such that the pump cavity rotates about the cam, the pump cavity comprising an actuating element and a chamber;a force translator coupling the arcuate bearing surface to the actuating element, the force translator comprising an axis having an arcuate position fixed to an arcuate position of the pump cavity about the rotational axis, such that the force translator rotates with the pump cavity about the drive mechanism; anda water-selective membrane fluidly connecting a fluid source to a first reservoir, wherein an inlet of the pump cavity is fluidly connected to the first reservoir. 24. The tire inflation system of claim 23, further comprising a housing, rotatably coupled to the drive mechanism and the pump cavity, such that the drive mechanism rotates relative to the housing, wherein the housing is configured to statically mount to a rotating surface, the rotating surface configured to rotate relative to a gravity vector. 25. The tire inflation system of claim 24, wherein the housing encloses the drive mechanism, the pump cavity, and the force translator, the housing defining a housing interior, wherein the first reservoir is the housing interior and the fluid source is an ambient environment, wherein the inlet of the pump cavity is fluidly connected to the housing interior. 26. The tire inflation system of claim 25, wherein comprising a relief valve operable between an open state wherein the relief valve fluidly connects a reservoir to the housing interior, the reservoir fluidly connected to an outlet of the pump cavity, and a closed state wherein the relief valve substantially prevents fluid flow from the reservoir to the housing interior.

이 특허에 인용된 특허 (99)

이 특허를 인용한 특허 피인용횟수: 3

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Tire inflation system

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Tire inflation system

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이 특허에 인용된 특허 (99)

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