Portable self-contained power conversion unit

• US 4,731,545 A
• Filed: 03/14/1986
• Issued: 03/15/1988
• Est. Priority Date: 03/14/1986
• Status: Expired due to Fees

• Current Assignee: Desai & Lerner A Partnership of California
• Original Assignee: Desai & Lerner
• Inventors: Lerner, Hal, Desai, Bhikhabhai J., Desai, Suresh B.
• Primary Examiner(s): Shoop, Jr., William M.
• Assistant Examiner(s): Logan, Sharon D.
• Application Number:
  US06/840,430
• Time in Patent Office: 732 Days
• Field of Search: 290/53, 290/42, 290/54, 290/43, 290/52, 416/197 A, 416/197 B, 416/185, 416/187, 416/188, 416/158, 417/348, 417/349, 415/80, 415/87, 340/320, 322/35
• US Class Current: 290/54
• CPC Class Codes: F03B 13/04 Adaptations for use in dentistry for driving tools or the like having relatively small outer diameter, e.g. pipe cleaning tools
• CPC Class Codes: H02K 7/1823 structurally associated with turbines or similar engines

Abstract

A portable, self-contained power conversion unit is disclosed that is attached to an outlet for a pressurized fluid system, such as the nozzle for a garden hose. An impeller mounted in the body of the unit and is rotated by the discharge of pressurized fluid through the unit. The rotational energy of the impeller is converted into electrical energy by a generator, and/or used directly in rotating tools attached to the impeller, such as grinding wheels, rotary saws, rotary brushes, drill bits, and the like.

Claims

1. A portable, self-contained power-conversion unit, for attachment to a source of pressurized fluid, comprising:

(a) a body having a passage for transmission of fluid, an inlet end, and an outlet end, the passage joining the inlet end and the outlet end in order to permit flow of pressurized fluid from the inlet end to the outlet end, the inlet end being attachable to the source of pressurized fluid and the outlet end being at ambient atmospheric pressure;

(b) an impeller rotatably mounted in the body and protruding into the passage so that the impeller is rotated by the flow of pressurized fluid through the passage; and

(c) a generator mounted on and supported by the body and attached to the impeller so that rotation of the impeller causes rotation of an armature in the generator in order to generate electric power.

2. The power-conversion unit according to claim 1 in which a rotary tool projecting from the body is attached to the impeller so that rotation of the impeller rotates the rotary tool.

3. The power-conversion unit according to claim 1 further comprising a plurality of illumination units attached to and supported by the body and electrically connected in circuit with the generator to be supplied with electrical power by the generator.

4. The power-conversion unit according to claim 3 in which the plurality of illumination units are detachable from the body.

8. The power-conversion unit according to claim 1, 5 or 2 further comprising a chuck for releasably engaging rotating tools, the chuck being rotatably attached to the body and attached to the impeller so that rotation of the impeller causes rotation of the chuck.

5. A portable, self-contained power-conversion unit, for attachment to a source of pressurized fluid, comprising:

(a) a body having a passage for transmission of fluid, an inlet end, and an outlet end, the passage joining the inlet end and the outlet end in order to permit flow of pressurized fluid from the inlet end to the outlet end, the inlet end being attachable to the source of pressurized fluid and the outlet end being at ambient atmospheric pressure;

(b) an impeller rotatably mounted in the body and protruding into the passage so that the impeller is rotated by the flow of pressurized fluid through the passage; and

(c) a rotary tool projecting from the body and attached to the impeller so that rotation of the impeller rotates the rotary tool.

6. The power-conversion unit according to claim 5 further comprising a plurality of generator jacks mounted on the body for electrical attachment of a plurality of electric appliances to be powered by the generator.

7. The power-conversion unit of claim 6 in which one or more of the electric appliances are illumination units.

9. A portable, self-contained power-conversion unit, attachable to a source of pressurized fluid, comprising:

(a) a body having a passage for transmission of fluid from the source of pressurized fluid to ambient atmospheric pressure, an inlet end, and an outlet end, the passage joining the inlet end and the outlet end, the inlet end including connecting means for removable attachment of the body to the source of pressurized fluid;

(b) an impeller having a shaft, the impeller being mounted in the body rotatable about the shaft and protruding into the passage so that the impeller intercepts and is rotated by the flow of pressurized fluid through the passage; and

(c) a throttle valve mounted in the passage between the inlet end and the impeller, the throttle valve controlling the velocity of the fluid intercepted by the impeller.

10. The power-conversion unit according to claim 9 further comprising a generator having an armature, the armature being attached to a first end of the shaft of the impeller so that rotation of the impeller causes rotation of the armature.

11. The power-conversion unit according to claims 9 or 10, further comprising a chuck for releasably engaging rotary tools, the chuck being rotatably mounted on the body, and engaged to the impeller so that rotation of the impeller rotates the chuck.

12. The power-conversion unit according to claim 11 in which the chuck is mounted on a second end of the shaft of the impeller.

13. The power-conversion unit according to claim 10 further comprising a plurality of illumination units attached to the body and in circuit with the generator in order to be powered thereby, the illumination units being attached to the body and capable of providing illumination in a direction generally the same as that taken by fluid leaving the outlet end of the body.

14. The power-conversion unit according to claim 13 in which the illumination units are releasably attachable to the body.

15. A portable, self-contained power-conversion unit, attachable to a source of pressurized fluid, comprising:

(a) a body having a passage joining an inlet end and an outlet end of the body, the passage allowing the passage of pressurized fluid from the inlet end to the outlend end, the inlet end having attachment means for joining the source of pressurized fluid to the body;

(b) an impeller having blades and a shaft, the impeller being mounted in the body and rotatable about the shaft, the shaft being at subsequently right angles to the direction of passage of the pressurized fluid through the passage;

(c) a generator attached to the shaft and mounted on a first side of the body;

(d) a chuck attached to the shaft and mounted on a second side of the body; and

(e) a throttle valve located within the body between the inlet end and the impeller and controlling the diameter of the passage at one point or points, the throttle valve being rotatable within the body so as to control the velocity of fluid emerging from the throttle and striking the impeller.

16. The power-conversion unit of claim 15 further comprising illumination units removably attached to the body and electrically powered by the generator.

17. The power-conversion unit of claim 16 further comprising a bipod mounted on the body for supporting the power-conversion unit.