Generator system with vertically shafted engine

• US 6,313,543 B1
• Filed: 11/06/2000
• Issued: 11/06/2001
• Est. Priority Date: 08/13/1998
• Status: Expired due to Fees

• Current Assignee: Powermate Corporation (Pramac America LLC)
• Original Assignee: Coleman Company Incorporated (Newell Brands Inc.)
• Inventors: Frank, Kenneth M.
• Primary Examiner(s): Ponomarenko, Nicholas
• Application Number:
  US09/707,062
• Time in Patent Office: 365 Days
• Field of Search: 290/1.A, 290/1.B, 290/2, 290/40.R, 290/46, 322/1, 123/2
• US Class Current: 290/1.00A
• CPC Class Codes: F02B 2063/045 Frames for generator-engine sets
• CPC Class Codes: F02B 63/04 for electric generators
• CPC Class Codes: F02B 63/047 Movable engine-generator combinations on wheels
• CPC Class Codes: F02B 75/007 having vertical crankshafts
• CPC Class Codes: F02B 75/16 Engines characterised by number of cylinders, e.g. single-cylinder engines F02B75/26 takes precedence
• CPC Class Codes: H02J 9/066 characterised by the use of dynamo-electric machines H02J9/08 takes precedence
• CPC Class Codes: H02K 7/1815 structurally associated with reciprocating piston engines general aspects of generating sets, e.g. housing, F02B63/04

Abstract

A portable generator system includes an interface mounting element for supporting a selected engine, from a plurality of engines, with a vertically oriented output shaft when the generator system is positioned on a substantially horizontal surface. A generator is directly coupled to the output shaft of the engine and rotates therewith about a common axis. The generator is selectable from a plurality of generators having different output power characteristics. A movable support cart supports interface, engine and generator and is formed of a single piece of tubular stock. The tubular stock is bent to form two substantially parallel, displaced, U-shaped regions bounded by a third U-shaped region substantially perpendicular thereto wherein the interface element, the selected engine and the selected generator are supported and protected. The cart supports first and second displaced wheels which rotate about a common axis which extends between the first and second regions, parallel to the third region. A fuel tank is carried on the cart and extends from the first side of the axis while the interface extends from the second side enabling the fuel tank to counterbalance the weight of the selected engine, the selected generator and the interface about the axis of rotation of the wheels.

Claims

1. An energy system supportable on a surface comprising:

an engine with a rotatable output with an axis of rotation oriented so as to be substantially perpendicular to the surface;

a source of electrical energy coupled to the engine output;

a sensor for detecting an electrical withdrawal from the source;

a speed control element for causing the output of the engine to exhibit a substantially constant speed over a range of electrical withdrawals from the source;

a disabling device, coupled between the sensor and the speed control element, for disabling same in the sensed absence of an electrical withdrawal above a predetermined threshold whereupon, in the presence of a disabled speed control element, the speed of the output decreases from the substantially constant output speed to a lower, idle speed.

2. A system as in claim 1 wherein the disabling device includes an elongated coil, wherein the coil is oriented with an axis that is substantially perpendicular to the shaft.

3. A system as in claim 2 wherein the speed control element includes a movable output element, coupled to a speed control input port of the engine and wherein when the coil is in a selected state, the movable element moves to an engine idle speed position.

4. A system as in claim 3 wherein the coil, when energized, is in the selected state.

5. A system as in claim 4 wherein the output element pivots and moves toward the energized coil to the engine idle speed position.

6. A system as in claim 1 wherein the speed control element includes a contactless speed sensor.

7. A system as in claim 6 wherein the disabling device includes a solid state circuit for disabling the speed control element.

8. A system as in claim 1 which includes circuitry for supplying energy, generated from operation of the engine, to the sensor and the disabling device.

9. A system as in claim 8 wherein the circuitry for supplying energy includes a selected alternator coil carried adjacent to the engine.

10. A system as in claim 3 wherein the speed control element includes a mechanical governor.