Remotely controlled lawn mower

• US 5,572,856 A
• Filed: 08/21/1995
• Issued: 11/12/1996
• Est. Priority Date: 02/18/1994
• Status: Expired due to Term

• Current Assignee: Chingyu J. Ku
• Original Assignee: Chingyu J. Ku
• Inventors: Ku, Chingyu J.
• Primary Examiner(s): NOVOSAD, STEPHEN
• Application Number:
  US08/517,285
• Time in Patent Office: 449 Days
• Field of Search: 56/2, 56/10.2 A, 56/10.6, 56/10.7, 56/10.8, 56/11.9, 56/12.7, 56/16.9, 56/17.5, 56/13.5, 180/131, 180/79.1
• US Class Current: 56/10.20A
• CPC Class Codes: A01D 2101/00 Lawn-mowers
• CPC Class Codes: A01D 34/008 for automated or remotely controlled operation
• CPC Class Codes: A01D 42/00 Mowers convertible to apparatus for purposes other than mowing; Mowers capable of performing operations other than mowing mowers combined with apparatus performing additional operations while mowing A01D43/00

Abstract

A remotely controlled mower which can be easily converted to an edger, a trimmer and a blower with replaceable kits. The mower is battery powered with two drive motors (16A & B) having gear reducing means to provide rotational energy for propulsion and steering which enables the mower to turn with unlimited angles. Cutting devices for mowing, edging, trimming and blowing device are molded integrally with assemblies for easier attachment. The multiple holes on the assemblies provide a simple way to change cutting heights. Angle drives (54A & B) are used to convert the rotating directions for trimming, edging and mowing. The mower produces no air pollution with low operating noise. The combination of various functions in one remotely controllable mower not only makes lawn maintenance tasks easier but saves homeowners money to purchase and to service different equipments with less space required for storage.

Claims

1. A remotely controlled mower comprising:

(a) a frame

(b) a pair of drive wheel means mounted on the right and left sides of said frame for providing propelling and steering functions,

(c) a pair of gear reducing motor means, each of which is connected to a drive wheel means and operates independently in its rotating directions, for said mower to go forward, backward and to turn to any directions desired with unlimited turning angles,

(d) electric motor means mounted on said frame for producing rotational energy to cut grass,

(e) cutting means for cutting grass,

(f) power means for providing energy to operate said mower,

(g) control means for remotely controlling mower functions and movements,

whereby a user can mow lawns by remotely controlling said mower and convert it to an edger, a trimmer and a leaf blower.

2. The mower of claim 1 wherein said frame has a curved rim for preventing buildup of grass clippings underneath said mower.

3. The mower of claim 1 wherein said drive wheel means are replaced with track means for enabling said mower to move in rough terrains.

4. The mower of claim 1, further including free spinning supporting wheel means for additional support to said frame when needed.

5. The mower of claim 1 wherein said mower has more than one cutting means located at different cutting heights in different directions for more efficient cutting and better mulching.

6. The mower of claim 5 wherein said cutting means are made of metallic materials such as braided strands of wires.

7. The mower of claim 5 wherein said cutting means are made of non-metallic materials such as plastic strings.

8. The mower of claim 5 wherein said cutting means have a predetermined shape with edges for producing cleaner cuts.

9. The mower of claim 1 further including an assembly means having an elongated body with a hollow center and holes on the top in order to be secured onto the shaft of said electric motor means by screw means.

10. The mower of claim 9 wherein said cutting means are molded integrally with said assembly means at predetermined locations for easy attachment and replacement.

11. The mower of claim 9 wherein cutting heights are easily set by adjusting the cutting level of said cutting means on said assembly means whereby no additional height and wheel adjustment devices are needed.

12. The Mower of claim 1, further including an angle drive means with multiple drives for converting the rotating directions to different angles whereby various cutting means can be attached to the appropriate drives for mowing, trimming, edging and blowing.

13. The Mower of claim 12 wherein said angle drive means is mounted on the shaft means of cutting motor means and has one drive rotating horizontally for attaching mowing means and the other drive rotating at a desired angle for trimming, edging and blowing.

14. The Mower of claim 12 further including an extension means having a predetermined length attached to said other drive.

15. The Mower of claim 14 further including a second angle drive means, which is mounted on the outer end of said extension means, having drives with holes on their ends for mounting and rotating at desired angles for edging, trimming and blowing.

16. The Mower of claim 12 further including an edging assembly means, a trimming assembly means and a blowing assembly means, each of which has an elongated body with a hollow center and multiple holes on its top to be secured to the drives by bolt and nut means.

17. The mower of claim 12 further including multiple strings means and fan blade means molded with said edging, trimming and blowing assembly means integrally at predetermined locations for easy attachment.