Electric start mini-cultivator

• US 7,270,100 B2
• Filed: 06/27/2006
• Issued: 09/18/2007
• Est. Priority Date: 03/03/2005
• Status: Expired due to Fees

• Current Assignee: Ardisam Incorporated
• Original Assignee: Ardisam Incorporated
• Inventors: Ruppel, Ronald, Ruppel, Mark
• Primary Examiner(s): Cronin; Stephen K.
• Assistant Examiner(s): Castro; Arnold
• Application Number:
  US11/477,193
• Publication Number:
  US 20070006839A1
• Time in Patent Office: 448 Days
• Field of Search: 123/179.24, 123/179.25, 123/179.28, 123/185.2, 123/185.3, 123/185.4, 123/185.1, 172/42
• US Class Current: 123/179.24
• CPC Class Codes: F02N 11/00 Starting of engines by means of electric motors
• CPC Class Codes: F02N 11/08 Circuits or control means specially adapted for starting of engines
• CPC Class Codes: F02N 11/101 for preventing engine starter actuation or engagement
• CPC Class Codes: F02N 3/02 having pull-cords

Abstract

An electric starter for a walk-behind, powered, rotary cultivator having a gasoline engine having a crankshaft and a recoil starter connected to the gasoline engine. The electric starter includes an electric motor connected to the crankshaft between the recoil starter and the engine so that activation of the electric motor starts the engine and the recoil starter can also be used to start the engine; a battery connected to the electric motor; a start switch between the battery and the electric motor; and a battery charger. The electric starter is intended for use on cultivators generally having less than about 2 horsepower. The recoil starter is intermittently engageable with the crankshaft through the electric motor. The electric motor may also act as a generator supplying electric current to the battery to charge the battery.

Claims

1. In a hand-supported, walk-behind cultivator having an engine and a recoil starter attached to the engine crankshaft, an electric starting apparatus for starting the engine, the apparatus comprising:

(a) an electric motor directly connected to the crankshaft whereby activation of the electric motor turns the crankshaft to start the engine;

(b) a source of power for the electric motor; and

(c) wherein the electric motor is connected to the crankshaft between the recoil start and the crankshaft, thereby allowing the recoil start to also be used to start the engine.

2. The electric starting apparatus of claim 1, further comprising a start switch between the source of power and the electric motor.

3. The electric starting apparatus of claim 2, further comprising a disable switch preventing the engine from starting.

4. The apparatus of claim 2, wherein the source of power is a battery.

5. The apparatus of claim 4, further comprising a battery charger.

6. An electric starter for a walk-behind, powered, rotary cultivator having a gasoline engine having a crankshaft and a recoil starter connected to the gasoline engine, the electric starter comprising:

(a) an electric motor directly connected to the crankshaft without intermediate components whereby activation of the electric motor turns the crankshaft to start the engine; and

(b) a source of power for the electric motor.

7. The electric starter of claim 6, further comprising a start switch between the source of power and the electric motor.

8. The electric starter of claim 7, further comprising a disable switch preventing the engine from starting.

9. The electric starter of claim 6, wherein the source of power is a battery.

10. The electric starter of claim 9, further comprising a battery charger.

11. An electric starter for a walk-behind, powered, rotary cultivator having a gasoline engine having a crankshaft and a recoil starter connected to the gasoline engine, the electric starter comprising:

(a) an electric motor directly connected to the crankshaft in-line between the recoil starter and the crankshaft whereby activation of the electric motor starts the engine and whereby the recoil starter can also be used to start the engine;

(b) a battery connected to the electric motor;

(c) a start switch between the battery and the electric motor; and

(d) a battery charger.

12. The electric starter of claim 11, further comprising a disable switch preventing the engine from starting.

13. A walk-behind, powered, rotary cultivator having a gasoline engine having a crankshaft and a recoil starter connected to the gasoline engine, comprising:

(a) an electric motor directly connected to the crankshaft in-line between the recoil starter and the crankshaft;

(b) a battery connected to the electric motor; and

(c) wherein the recoil starter is intermittently connected to the crankshaft through the electric motor.

14. The cultivator of claim 13, wherein the electric motor further comprises a rotor directly connected to the crankshaft and a stator positioned opposite the rotor.

15. The cultivator of claim 14, further comprising a recoil clutch assembly connected to the rotor and wherein the recoil starter is intermittently connected to the recoil clutch assembly.

16. The cultivator of claim 15, further comprising a plurality of rods pivotally connected to the recoil starter and movable between a first position in which the plurality of rods do not engage the recoil clutch assembly and a second position in which the plurality of rods engage the recoil clutch assembly.

17. The cultivator of claim 14, wherein the electric motor is also a generator supplying electric current to the battery to recharge the battery.

18. A walk-behind, powered, rotary cultivator having a gasoline engine having a crankshaft, comprising:

(a) a housing further comprising an electric motor directly connected to the crankshaft and a pull starter selectively engageable to the crankshaft to start the engine, wherein the electric motor is in-line between the pull starter and the crankshaft; and

(b) a source of power for the electric motor.