# US 10,306,843 B2 · Backpack leaf blower

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,306,843 B2
- Document ID: US10306843B2
- Status: Granted
- Kind: B2
- Application number: 14/868,799
- Filed: 2015-09-29
- Published: 2016-01-21
- Granted: 2019-06-04
- Earliest claimed: 2012-07-09
- Assignees: Techtronic Outdoor Products Technology Limited
- Applicants: Techtronic Outdoor Products Technology Limited
- Inventors: Clinton C. Thackery; Charles K. Long
- Web page: https://patentgrep.com/patent/US10306843B2

## CPC

- A01G 20/47: Vacuum or blower devices
- A47L 5/36: Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back
- A47L 5/14: cleaning by blowing-off, also combined with suction cleaning
- A01G: HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING (picking of fruits, vegetables, hops or the like A01D46/00; propagating unicellular algae C12N1/12)
- A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08)

## Abstract

A leaf blower to be worn by a user. The leaf blower including a frame having a back plate defining a back plate plane and a blower system coupled to the frame. The blower system includes a motor having drive shaft, the drive shaft defining an axis, and the axis forms an angle with respect to the back plate plane between about 5 degrees and about 35 degrees.

## Claims

### Claim 1

A leaf blower to be worn by a user, the leaf blower comprising:
a frame including a back plate and a base plate extending from the back plate, a fixed angle being formed between the back plate and the base plate, the fixed angle being between about 55 degrees and about 85 degrees; and
a blower system coupled to the base plate of the frame, the blower system including an impeller and a housing at least partially encompassing the impeller and defining an inlet and a housing outlet, the blower system defining a working plane that is substantially perpendicular to the axis of rotation of the impeller, and wherein the working plane is also substantially parallel to the base plate.

### Claim 2 (depends on 1)

The leaf blower of claim 1, wherein the fixed angle is about 65 degrees.

### Claim 3

A leaf blower to be worn by a user, the leaf blower comprising:
a frame including a back plate defining a back plate plane and a base plate extending from the back plate, a first fixed angle being formed between the back plate and the base plate, the first fixed angle being between about 55 degrees and about 85 degrees; and
a blower system coupled to the base plate of the frame, the blower system including a motor having a drive shaft, the drive shaft having a lower end positioned toward the base plate and an opposite upper end positioned closer to the back plate, the drive shaft defining a shaft axis extending between the lower end and the upper end, the shaft axis forming a second angle with the back plate plane between about 5 degrees and about 35 degrees.

### Claim 4 (depends on 3)

The leaf blower of claim 3, wherein the second angle is about 25 degrees.

### Claim 5 (depends on 3)

The leaf blower of claim 3, wherein the motor defines a center of gravity, and wherein a distance between the back plate plane and the center of gravity is less than half an overall length of the leaf blower when the distance and the overall length are measured perpendicularly from the back plate plane.