Battery-powered backpack blower

Patent metadata

Field	Value
Publication number	US-10645884-B2
Application number	US-201815877896-A
Country	US
Kind code	B2
Filing date	Jan 23, 2018
Priority date	Nov 20, 2014
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

The battery-powered backpack blower includes a back support assembly including a back plate configured to permit a user to mount the blower to the user's back, and a volute assembly including a first volute portion and a second volute portion. The backpack blower further includes a housing assembly including a battery assembly and a motor assembly therein, the housing assembly is provided intermediate to the back assembly and the volute assembly.

First claim

What is claimed is:

1. A backpack blower, comprising:
a backplate;
a volute assembly for providing an air flow pathway through the backpack blower;
a fan member to generate air flow through the volute assembly;
a motor secured to the volute assembly and operatively connected to the fan member, the motor being powered by at least one battery;
a first battery well configured to receive a first battery, wherein the first battery is disposed horizontally and generally central with respect to the backplate; and
a second battery well, spaced from the first battery well, configured to receive a second battery.

2. The backpack blower of claim 1 , wherein the motor is located between the first battery well and the second battery well.

3. The backpack blower of claim 1 , wherein the second battery is disposed horizontally and generally central to the backplate.

4. The backpack blower of claim 3 , wherein a center of gravity of the first battery and a center of gravity of the second battery are generally aligned with a lateral center of the backpack blower.

5. The backpack blower of claim 4 , wherein the center of gravity of the first battery is closer to the volute assembly than the center of gravity of the second battery.

6. The backpack blower of the claim 3 , wherein the first battery well is disposed above the second battery well.

7. The backpack blower of claim 1 , wherein the volute assembly is disposed substantially parallel with the backplate.

8. The backpack blower of claim 1 , comprising a floor plate to protect a bottom portion of the backpack blower, wherein the backpack blower may be rested upright on the floor plate.

9. The backpack blower of claim 8 , wherein when resting flat on the floor plate, the backplate is angled a small degree from a vertical axis.

10. A backpack blower, comprising:
a backplate defining a first plane;
a harness attached to the backplate;
a volute assembly for providing an air flow pathway through the backpack blower, the volute assembly lying in a second plane, wherein the first plane and the second plane are substantially parallel;
a motor secured to the volute assembly and operatively connected to the fan member, the motor being powered by at least one battery;
a fan member to generate air flow through the volute assembly; and
a first battery having a center of gravity, wherein the center of gravity of the first battery is closer to the backplate than a center of gravity of the backpack blower.

11. The backpack blower of claim 10 , comprising a second battery having a second center of gravity, wherein a vertical axis going through the first battery center of gravity and a vertical axis going through the second battery center of gravity do not lie in the same plane.

12. The backpack blower of claim 10 , wherein the backplate if formed by an upper plate portion and a lower plate portion connected by intermediate members, the intermediate members allowing the upper plate portion and lower plate portion to move relative to one another.

13. The backpack blower of claim 10 , comprising a top guard plate member and a floor plate member, wherein the top guard plate member and floor plate member extend beyond the volute assembly to protect a back portion of the volute assembly.

14. The backpack blower of claim 10 , wherein the volute assembly has an air intake facing a rearward direction.

15. The battery-powered backpack blower of claim 10 , wherein the motor is operatively connected to the fan member, and the motor is disposed between a user and the fan member.

16. A battery powered backpack blower comprising:
a back support assembly and a harness assembly configured to permit a user to mount the backpack blower to the user's back, the back support assembly and harness provided at a frontal portion of the backpack blower;
a housing assembly secured to the back support assembly;
a volute assembly and a fan secured to the housing assembly, the volute assembly and the fan disposed on a rear portion on an opposite side of the housing assembly from the back support assembly; and
a motor assembly secured to the housing assembly between the back support assembly and the volute assembly for powering the fan to blow air through the volute assembly, wherein the fan rotates about an axis that is substantially perpendicular to the back support assembly.

17. The backpack blower of claim 16 , wherein the back support assembly includes a top plate portion and a bottom plate portion with an aperture there between.

18. The backpack blower of claim 16 , wherein the motor assembly includes a motor and a motor case configured to include the motor, wherein the motor is operatively connected to the fan to provide rotation thereto.

19. The backpack blower of claim 18 , comprising a belt drive system connected to a shaft of the motor and a shaft of the fan.

20. The backpack blower of claim 16 , wherein the housing assembly includes a first housing portion configured for fastenable engagement with the back support assembly and a second housing portion configured for fastenable engagement with the volute assembly.

Assignees

• Poole Brian
• Sheffer Joshua M
• Ng Wong Kun
• Flaharty Keith D
• Cooper Joseph B
• Martinez Philip
• Wheeler David Keith
• Black & Decker Inc

Inventors

• Poole Brian
• Sheffer Joshua M
• Ng Wong Kun
• Flaharty Keith D
• Cooper Joseph B
• Martinez Philip
• Wheeler David Keith

Classifications

• A47L5/14

  cleaning by blowing-off, also combined with suction cleaning · CPC title

• A01G20/43 Primary

  for sweeping, collecting or disintegrating lawn debris · CPC title

• A01G20/47 Primary

  Vacuum or blower devices · CPC title