Tire pressuring and regulating apparatus

• US 5,201,968 A
• Filed: 08/27/1991
• Issued: 04/13/1993
• Est. Priority Date: 08/27/1991
• Status: Expired due to Fees

• Current Assignee: Cycloid Company
• Original Assignee: Cycloid Company
• Inventors: Renier, Grant J.
• Primary Examiner(s): Ball, Michael W.
• Assistant Examiner(s): Lorin, Francis J.
• Application Number:
  US07/750,606
• Time in Patent Office: 595 Days
• Field of Search: 152/415, 152/418, 152/419, 152/427, 417/233, 417/231, 417/211, 417/328
• US Class Current: 152/418
• CPC Class Codes: B60C 23/133 activated by centrifugal force
• CPC Class Codes: B60C 23/137 comprising cam driven pistons

Abstract

Apparatus for harnessing and utilizing, inter alia, cyclic forces generated at a location eccentric from the axis of rotation of a rolling wheel. The apparatus may include, for example, pumps that can be attached to the valve stem of an automobile wheel in order to pressurize under-inflated tires and maintain tire pressure at a preset value.

Claims

1. Apparatus for utilizing a cyclic resultant force of a centrifugal force and a gravitation force, said apparatus including:

a vehicle wheel including a pneumatic tire;

pump means including a piston reciprocal in a cylinder in response to the cyclically changing resultant force of centrifugal and gravitational forces acting on said piston for pressurizing air to inflate said pneumatic tire, said piston being acted upon by an air cushion for providing a restoring force; and

attachment means at a site eccentric to the axis of rotation of said vehicle wheel for support of said pump means by said vehicle wheel externally of the pneumatic tire.

2. The apparatus according to claim 1 further including means for controlling the supply of pressurized air to the pneumatic tire by said pump means and to prevent pressurizing the pneumatic tire beyond a predetermined tire pressure.

3. The apparatus according to claim 2 wherein said means for controlling includes a control valve.

4. The apparatus according to claim 1 wherein said pump means further includes an intensifier piston reciprocal with said piston in response to cyclic differences to the resultant force.

5. The apparatus of claim 4 wherein said pump means further includes a pivotal lever and fulcrum support, said lever connected at one end to the pump piston and at the other end to the intensifier piston, said lever and said fulcrum support including cooperating structure for enabling reciprocal oscillation of said piston driven pump in response to pivotal oscillation of said lever.

6. The apparatus of claim 5 wherein said pump means further includes a second cylinder having first and second ends and said reciprocally oscillatable intensifier piston is slidably received in said second cylinder.

7. The apparatus of claim 6 wherein said fulcrum support includes a surface for cylindrically changing the effective length of the lever with respect to pivoting thereof.

8. The apparatus according to claim 1 wherein said air cushion includes a piston member reciprocable in a housing while joined with a connector, one end of the connector being coupled to said pump piston and the other end of the connector being coupled to said piston member.

9. The apparatus according to claim 8 wherein said piston member is reciprocable in the housing against bellows.

10. The apparatus according to claim 4 wherein said intensifier piston is reciprocable in a sleeve supported in a pump housing, and wherein said intensifier piston can slide to and from within said pump housing.

11. The apparatus according to claim 9 wherein said bellows comprises a high pressure and a low pressure bellows coupled end-to-end.

12. The apparatus according to claim 2 wherein said means for controlling includes a reed valve.

13. The apparatus according to claim 4 wherein said intensifier piston includes a large diameter piston having a mass which is large in relation to the diameter and mass of the piston of said pump means.

14. The apparatus according to claim 1 wherein said air cushion includes a high pressure bellows and a low pressure bellows acted upon by a piston while coupled to the piston of said pump means.

15. The apparatus according to claim 2 wherein said means for controlling includes inlet and outlet valves.

16. The apparatus according to claim 2 wherein said means for controlling includes an air pilot pressure operated valve.

17. The apparatus according to claim 1 wherein said piston reciprocates along a path of travel extending radially from the axis of rotation by said vehicle wheel.

18. Apparatus for pressurizing a pneumatic tire, said apparatus including:

a vehicle wheel including a pneumatic tire;

attachment means at a site eccentric to the axis of rotation of said vehicle wheel for enabling the utilization of a cyclic occurring resultant force of centrifugal and gravitation forces; and

pump means including a piston reciprocal in a cylinder while supported by said attachment means for pressurizing air to inflate said pneumatic tire in response to the cyclically changing force acting on said piston, said piston being acted upon by an air cushion to provide a restoring force.

19. The apparatus according to claim 18 further including means for controlling the supply of pressurized air to the pneumatic tire by said pump means and to prevent pressurizing the pneumatic tire beyond a predetermined tire pressure.

20. The apparatus according to claim 19 wherein said means for controlling includes a control valve.

21. The apparatus according to claim 18 wherein said pump means further includes an intensifier piston reciprocal with said piston in response to cyclic differences to the resultant force.

22. The apparatus according to claim 21 wherein said pump means further includes a pivotal lever and a fulcrum support, said lever connected at one end of the pump piston and at the other end to the intensifier piston, said lever and said fulcrum support including cooperating structure for enabling reciprocal oscillation of said piston in response to pivotal oscillation of said lever.

23. The apparatus according to claim 22 wherein said pump means further includes a second cylinder having first and second ends and said reciprocally oscillatable intensifier piston is slidably received in said second cylinder.

24. The apparatus according to claim 23 wherein said fulcrum support includes a surface for cylindrically changing the effective length of the lever with respect to pivoting thereof.

25. The apparatus according to claim 18 wherein said air cushion includes a piston member reciprocable in a housing while joined with a connector on end of the connector being coupled to said pump piston and the other end of the connector being coupled to said piston member.

26. The apparatus according to claim 25 wherein said piston member is reciprocable in the housing against bellows.

27. The apparatus according to claim 21 wherein said intensifier piston is reciprocable in a sleeve supported in a pump housing and wherein said intensifier piston can slide to and fro within pump housing.

28. The apparatus according to claim 26 wherein said bellows comprises a high pressure and low pressure bellows coupled end-to-end.

29. The apparatus according to claim 19 wherein said means for controlling include a reed valve.

30. The apparatus according to claim 21 wherein said intensifier piston includes a large diameter piston having a mass which is large in relation to the diameter and mass of the piston of said pump means.

31. The apparatus according to claim 18 wherein said air cushion includes a high pressure bellows and a low pressure bellows acted upon by a piston while coupled to the piston of said pump means.

32. The apparatus according to claim 19 wherein said means for controlling includes inlet and outlet valves.

33. The apparatus according to claim 19 wherein said means for controlling includes an air pilot pressure operated valve.

34. The apparatus according to claim 18 wherein said piston reciprocates along a path of travel extending radially from the axis of rotation by said vehicle wheel.