Miniature, portable, self-contained power machine

• US 5,647,721 A
• Filed: 06/07/1995
• Issued: 07/15/1997
• Est. Priority Date: 09/25/1992
• Status: Expired due to Fees

• Current Assignee: David J. Rohrbaugh
• Original Assignee: David J. Rohrbaugh
• Inventors: Rohrbaugh, David J.
• Primary Examiner(s): Underwood, Donald W.
• Application Number:
  US08/478,517
• Time in Patent Office: 769 Days
• Field of Search: 414/685, 414/686, 414/687, 414/917, 414/918, 414/718, 414/728, 180/9.1, 305/52, 298/22 R, 298/1 A
• US Class Current: 414/686
• CPC Class Codes: E02F 3/286 telescopic or slidable fork-lift trucks with a telescopic boom B66F9/0655
• CPC Class Codes: E02F 3/302 with an additional link
• CPC Class Codes: E02F 3/306 with telescopic dipper-arm or boom
• CPC Class Codes: E02F 3/308 working outwardly
• CPC Class Codes: E02F 3/325 Backhoes of the miniature type
• CPC Class Codes: E02F 9/121 Turntables, i.e. structure rotatable about 360°
• CPC Class Codes: E02F 9/207 of the type electric propulsion units, e.g. electric motors or generators
• CPC Class Codes: Y10S 414/131 Transmission-line guide for a shiftable handler

Abstract

Disclosed herein is a miniature, portable, self-contained power machine for handling materials, comprising, a rigid frame providing the base structure for all components of said machine, a means of electrical power supply for said machine, means for regulating the motion of said machine, two endless roller chains forming a traction system and serving as the means to move said machine over various types of terrain, means for readily receiving and rigidly securing a variety of miniature, hydraulically powered material handling implements to said machine, and a central hydraulic system which is powered by said power supply means and which supplies power to said attachable material handling implements. The machine has a diversity of applications in numerous industries. The machine accepts any of a variety of attachable implements through an assembly socket and a torque arm socket, and then links the implement to the central hydraulic system with hydraulic hoses leading to a hydraulic power manifold. Two of these implements include a telescoping boom and bucket assembly and an improved forward reach and higher lift capacity bucket assembly. A hydraulically powered dumping bed attachment may be bolted to the rigid frame of the machine and further modified to result in a hydraulically powered dumping bed and hopper attachment.

Claims

1. A miniature, portable, self-contained power machine for handling materials, comprising:

a rigid frame having an integral platform and providing a base structure for all components of said machine;

electrical power supply means for powering said machine and attached to said rigid frame;

means for regulating the motion of said machine;

roller chains forming a traction system for moving said machine over various terrains and attached to said rigid frame;

a central hydraulic system which is powered by said electrical power means;

a hydraulically powered material handling implement having two differently sized shafts extending from a bottom of said hydraulically powered material handling implement;

means to couple said central hydraulic system to said hydraulically powered material handling implement;

means to control the movement of said hydraulically powered material handling implement;

an assembly socket formed in said integral platform of said rigid frame for receiving one of said differently sized shafts and rigidly securing said hydraulically powered material handling implement to said frame;

a torque arm socket means formed in said integral platform of said rigid frame for receiving another of said two differently sized shafts and rigidly securing said hydraulically powered material handling implement to said frame; and

a retainer cap for fastening to one of said two differently sized shafts from underneath said integral platform for rigidly securing said shaft within said assembly socket and thereby securing said hydraulically powered material handling implement to said machine.

2. A miniature, portable, self-contained power machine for handling materials, as recited in claim 1, wherein said hydraulically powered material handling implement is a telescoping boom and bucket assembly.

3. A miniature, portable self-contained power machine for handling materials, as recited in claim 2, wherein said telescoping boom and bucket assembly, comprises:

(a) a telescoping boom;

(b) a boom elevation and retainer sleeve to hold said telescoping boom;

(c) a plate connected to said telescoping boom and bucket assembly having said two differently sized shafts extending therefrom;

(d) a bucket assembly connected at an end of said boom;

(e) hydraulic means to rotate said telescoping boom and bucket assembly about a vertical axis;

(f) hydraulic means to extend and retract said telescoping boom and bucket assembly;

(g) hydraulic means to elevate said telescoping boom and bucket assembly;

(h) hydraulic means to pivot said bucket assembly;

(i) a multiplicity of hydraulic hoses for transferring power from said central hydraulic system to said various hydraulic means of said telescoping boom and bucket assembly;

(j) means to take up the slack of said hydraulic hoses assuring operation of said telescoping boom and bucket assembly;

wherein said assembly socket receives and rigidly secures a larger of said two differently sized shafts extending from said plate; and

wherein said retainer cap fastens to said larger of said two differently sized shafts thereby rigidly securing said larger of said two differently sized shafts within said assembly socket and said telescoping boom and bucket assembly to said machine.

4. A miniature, portable, self-contained power machine for handling materials as recited in claim 3, wherein said hydraulic means to elevate said telescoping boom and bucket assembly is a boom elevation hydraulic cylinder which is attached to said boom elevation and retainer sleeve and connected to said central hydraulic system.

5. A miniature, portable, self-contained power machine for handling materials as recited in claim 3, wherein said hydraulic means to rotate said telescoping boom and bucket assembly about a vertical axis is a hydraulic motor connected to said central hydraulic system.

6. A miniature, portable, self-contained power machine for handling materials as recited in claim 3, wherein said boom elevation and retainer sleeve holds said telescoping boom whereby said telescoping boom can freely extend and retract therethrough.

7. A miniature, portable, self-contained power machine for handling materials as recited in claim 3, wherein said telescoping boom comprises a plurality of hydraulic cylinders which are slidingly connected in a series relative to each other and can extend and retract one at a time.

8. A miniature, portable, self-contained power machine for handling materials, as recited in claim 1, wherein said hydraulically powered material handling implement is a hydraulically powered bucket assembly.

9. A miniature, portable, self-contained power machine for handling materials as recited in claim 8 wherein said hydraulically powered bucket assembly comprises:

a bucket;

a first hydraulic cylinder linked to said central hydraulic system to tilt said bucket;

a second hydraulic cylinder joined to said central hydraulic system to extend said bucket assembly;

a third hydraulic cylinder connected to said central hydraulic system to lift said bucket assembly;

hydraulic means to rotate said bucket assembly about a vertical axis; and

a plurality of linking arms in a scissors type configuration such that said bucket assembly has an improved forward reach capacity when said bucket is at ground level and a higher lift capacity when said bucket is suspended in the air.

10. A miniature, portable, self-contained power machine for handling materials, comprising:

a rigid frame having an integral platform and providing a base structure for all components of said machine;

electrical power supply means for powering said machine and attached to said rigid frame;

means for regulating the motion of said machine;

an endless belt forming a traction system for moving said machine over various terrains and attached to said rigid frame;

a central hydraulic system which is powered by said electrical power means;

a hydraulically powered extending bucket assembly having two differently sized shafts extending from a bottom of said hydraulically powered extending bucket assembly;

means to couple said central hydraulic system to said hydraulically powered extending bucket assembly;

means to control the movement of said hydraulically powered extending bucket assembly;

an assembly socket formed in said integral platform of said rigid frame for receiving one of said differently sized shafts and rigidly securing said hydraulically powered material handling implement to said frame;

a torque arm socket means formed in said integral platform of said rigid frame for receiving another of said two differently sized shafts and rigidly securing said hydraulically powered material handling implement to said frame; and

a retainer cap for fastening to one of said two differently sized shafts from underneath said integral platform for rigidly securing said shaft within said assembly socket and thereby securing said hydraulically powered material handling implement to said machine.

11. A miniature, portable, self-contained power machine for handling materials as recited in claim 10 wherein said hydraulically powered bucket assembly comprises:

a bucket;

a first hydraulic cylinder linked to said central hydraulic system to tilt said bucket;

a second hydraulic cylinder joined to said central hydraulic system to extend said bucket assembly;

a third hydraulic cylinder connected to said central hydraulic system to lift said bucket assembly;

hydraulic means to rotate said bucket assembly about a vertical axis; and

a plurality of linking arms in a scissors type configuration such that said bucket assembly has an improved forward reach capacity when said bucket is at ground level and a higher lift capacity when said bucket is suspended in the air.

12. A miniature, portable, self-contained power machine for handling materials, comprising:

a rigid base frame for supporting all components of said machine;

electrical power supply means for powering said machine and attached to said rigid frame;

means for regulating the motion of said machine;

a traction system for moving said machine over various terrains and attached to said rigid frame;

a central hydraulic system powered by said electrical power supply means;

a hydraulically powered material handling implement having attachment means comprised of two differently sized shafts attached to and extending from a bottom of said hydraulically powered material handling implement;

means to couple said central hydraulic system to said hydraulically powered material handling implement;

means to control the movement of said hydraulically powered material handling implement;

assembly socket and torque arm socket means formed in said rigid frame for receiving and rigidly securing said two differently sized shafts of said hydraulically powered material handling implement to said frame.

13. A miniature, portable, self-contained power machine for handling materials as recited in claim 12, wherein said traction system is an endless belt.

14. A miniature, portable, self-contained power machine for handling materials as recited in claim 12, wherein said traction system is a roller chain.

15. A miniature, portable, self-contained power machine for handling materials as recited in claim 12, wherein said hydraulically powered material handling implement is a telescoping boom and bucket assembly.

16. A miniature, portable, self-contained power machine for handling materials as recited in claim 12, wherein said hydraulically powered material handling implement is an extending bucket assembly.