RECIPROCATING COMPRESSOR OR PUMP AND A PORTABLE TOOL POWERING SYSTEM INCLUDING A RECIPROCATING COMPRESSOR

• US 20070292282A1
• Filed: 06/08/2007
• Published: 12/20/2007
• Est. Priority Date: 06/08/2006
• Status: Abandoned Application

• Current Assignee: Larry Alvin Schuetzle
• Original Assignee: Larry Alvin Schuetzle
• Inventors: Penner, Lloyd, Schuetzle, Larry
• Application Number:
  US11/760,312
• Publication Number:
  US 20070292282A1
• Time in Patent Office: Days
• US Class Current: 417/273
• CPC Class Codes: F04B 1/0404 Details or component parts
• CPC Class Codes: F04B 1/0421 Cylinders
• CPC Class Codes: F04B 1/0439 Supporting or guiding means for the pistons
• CPC Class Codes: F04B 1/0452 Distribution members, e.g. valves machines or pumps with cam-actuated distribution members at the outer ends of the cylinders F04B1/0472; machines or pumps with cam-actuated distribution members at the inner ends of the cylinders F04B1/0531; the piston-driving cams being provided with inlets and outlets F04B1/0535
• CPC Class Codes: F04B 1/053 with actuating or actuated elements at the inner ends of the cylinders
• CPC Class Codes: F04B 27/053 with an actuating element at the inner ends of the cylinders
• CPC Class Codes: F04B 35/00 Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
• CPC Class Codes: F04B 35/04 the means being electric
• CPC Class Codes: F04B 35/06 Mobile combinations
• CPC Class Codes: F04B 39/0005 adaptations of pistons
• CPC Class Codes: F04B 39/0022 piston rods
• CPC Class Codes: F04B 39/0094 crankshaft
• CPC Class Codes: F04B 39/066 Cooling by ventilation
• CPC Class Codes: F04B 39/10 Adaptations or arrangements of distribution members
• CPC Class Codes: F04B 39/121 Casings
• CPC Class Codes: F04B 39/122 Cylinder block
• CPC Class Codes: F04B 39/123 Fluid connections
• CPC Class Codes: F04B 39/127 Mounting of a cylinder block in a casing
• CPC Class Codes: F04B 41/06 Combinations of two or more pumps
• CPC Class Codes: F04B 53/14 Pistons, piston-rods or piston-rod connections
• CPC Class Codes: F04B 53/16 : Casings; Cylinders; Cylinder liners or heads; Fluid connections
• CPC Class Codes: F16L 37/23 : by means of balls
• CPC Class Codes: H01B 7/0072 : Electrical cables comprising fluid supply conductors

Abstract

A reciprocating compressor or pump features a manifold arranged not only to define a hollow interior for receiving fluid discharged from a plurality of cylinders but also to define a base or frame on which the cylinders are carried. Unique valves formed in part by flexible material reduces the likelihood of fatigue and increases efficiency by retaining less heat relative to conventional reed valves. A compressor or pump mounted at an end of a handle extending parallel to a motor housing likewise extending from the compressor or pump provides an easy to carry portable assembly. A fan mounted between a motor and a compressor pulls air through the compressor inlet to both cool the motor and feed the compressor. A portable tool system powers both pneumatic and electric tools. Connecting rod structures for radial compressors or pumps provide improved strength and easier assembly.

Claims

1. A reciprocating compressor or pump comprising:

a hollow cylinder;

a piston mounted within the cylinder for limited reciprocal movement therealong;

a drive system connected to the piston and operable to drive the reciprocal movement thereof;

intake and exhaust valves associated with the cylinder and operable to allow passage of fluid into the cylinder from a fluid supply outside the cylinder and subsequent discharge of the fluid from the cylinder under exertion of pressure on the fluid in the cylinder by the piston during movement toward a fully extended position thereof furthest from the drive system;

wherein the intake valve comprises;

a valve seat comprising a projection extending into a space within the hollow cylinder between a sealing engagement of the piston with the cylinder and a distal end of the cylinder opposite an open end thereof through which the piston and the drive system are connected;

a passage extending through the valve seat with an opening of the passage being defined on the projection to fluidly communicate the fluid supply outside the cylinder with the space within the hollow cylinder between the sealing engagement of the piston with the cylinder and the distal end of the cylinder; and

a resilient band disposed circumferentially about the projection, the band being resiliently stretchable about the projection by a difference in pressure between the fluid supply outside the cylinder and the space within the hollow cylinder between the sealing engagement of the piston with the cylinder and the distal end of the cylinder.

2. The reciprocating compressor or pump according to claim 1 wherein the resilient band is disposed in a circumferential recess in the projection.

3. The reciprocating compressor or pump according to claim 2 wherein the circumferential recess in the projection is tapered from an outermost periphery thereof.

4. The reciprocating compressor or pump according to claim 3 wherein the resilient band is tapered from an outer surface thereof to an inner surface thereof.

5. The reciprocating compressor or pump according to claim 2 wherein a depth of the circumferential recess is sufficient to prevent complete withdrawal of the resilient band from the circumferential recess under stretching by the difference in pressure.

6. The reciprocating compressor or pump according to claim 1 wherein the valve seat is formed on the piston with the passage extending through the piston to fluidly communicate opposite sides of the sealing engagement of the piston with the cylinder.

7. The reciprocating compressor or pump according to claim 1 wherein the valve seat is formed on the distal end of the cylinder with the projection extending into the space within the hollow cylinder from the distal end thereof.

8. The reciprocating compressor or pump according to claim 1 wherein the valve seat is formed on a cylinder head sealed to the distal end of the cylinder with the passage extending through the cylinder head to fluidly communicate opposite sides of a sealing engagement of the cylinder head with the cylinder.

9. A reciprocating compressor or pump comprising:

a cylinder liner defining a cylindrical bore and a piston sealed to the cylinder liner within the cylindrical bore for reciprocal movement therealong;

a drive system connected to the piston and operable to drive the reciprocal movement thereof; and

intake and exhaust valves associated with the cylinder and operable to allow passage of fluid into the cylindrical bore from a fluid supply outside the cylinder liner and subsequent discharge of the fluid from the cylindrical bore into a receiver under exertion of pressure on the fluid in the cylinder by the piston during movement toward a fully extended position thereof furthest from the drive system;

the exhaust valve comprising at least one exhaust port extending through a wall of the cylinder liner and a resilient band disposed circumferentially about the cylinder liner, the band being resiliently stretchable about the respective cylinder liner by passage of the fluid through the exhaust port from the cylindrical bore by the under the pressure exerted on the fluid by the piston; and

the receiver being sealed about the cylinder liner to enclose the resilient band and stretching of the resilient band within the receiver allowing flow of the fluid from the cylindrical bore into the receiver through the at least one exhaust port.

10. The reciprocating compressor or pump according to claim 9 comprising a plurality of cylinder liners about which the receiver is sealed to receive fluid from the cylindrical bore of each cylinder liner.

11. The reciprocating compressor or pump according to claim 9 wherein the resilient band is disposed in a circumferential recess in the wall of the cylinder liner.

12. The reciprocating compressor or pump according to claim 11 wherein the circumferential recess in the wall of the cylinder liner is tapered from an outermost periphery thereof toward the cylindrical bore.

13. The reciprocating compressor or pump according to claim 12 wherein the resilient band is tapered from an outer surface thereof to an inner surface thereof.

14. The reciprocating compressor or pump according to claim 12 wherein a depth of the circumferential recess is sufficient to prevent complete withdrawal of the resilient band from the circumferential recess under stretching by the compressed gas.

15. A reciprocating compressor or pump comprising:

a hollow cylinder;

a piston disposed within an interior of the hollow cylinder and sealed to the hollow cylinder for reciprocal movement therealong;

a drive system connected to the piston and operable to drive the reciprocal movement thereof along the hollow cylinder; and

intake and exhaust valves associated with the hollow cylinder and operable to allow passage of fluid into the cylinder, and subsequent discharge of the fluid therefrom under exertion of pressure on the fluid by the piston during movement toward an extended position thereof furthest from the drive system;

at least one of the intake and exhaust valves comprising;

a valve port communicating a fluid supply outside the hollow cylinder with a space within the hollow cylinder between a sealing engagement of the piston with the cylinder and a distal end of the cylinder opposite an open end thereof through which the piston and the drive system are connected; and

a flap comprising a fixed portion secured at a surface surrounding an opening of the valve port on one side thereof and a movable portion connected to the fixed portion by a flexible portion, the movable portion having greater rigidity than the flexible portion;

the flexible portion of the flap between the fixed and movable portions thereof being bendable in response to pressure differences between the space within the hollow cylinder and the fluid supply outside the hollow cylinder to move the movable portion between a closed position sealingly covering the opening of the valve port and an open position at least partially lifted from the opening of the valve port to allow fluid flow therethough.

16. The reciprocating compressor or pump according to claim 15 wherein the at least one of the intake and exhaust valves includes the intake valve, the valve port of the intake valve extending through the piston across the sealing engagement of the piston with the hollow cylinder and the flap being secured to a face of the piston on a side of the sealing engagement opposite the drive system.

17. The reciprocating compressor or pump according to claim 15 further comprising a second port surrounded by the surface and second movable and flexible portions of the flap likewise arranged to seal off and open the second port in response to pressure differences between the space within the hollow cylinder and the fluid supply outside the hollow cylinder.

18. The reciprocating compressor or pump according to claim 17 wherein the valve port and the second port, the movable portion and the second movable portion of the flexible flap, and the flexible portion and the second flexible portion are symmetric across the fixed portion of the flap.

19. The reciprocating compressor or pump according to claim 15 further comprising a seal secured to the surface to extend around the valve port and seal with the moveable portion of the flap in the closed position.

20. The reciprocating compressor or pump according to claim 15 wherein the movable portion comprises an integral extension of the flexible portion and a piece of material of greater rigidity than the flexible portion secured to the integral extension of the flexible portion.

21. The reciprocating compressor according to claim 15 wherein the piece of material comprises metal.

22. The reciprocating compressor according to claim 21 wherein the flexible flap comprises rubber.