IP Library › Granted Patent US 11,744,421
Granted Patent B2
US 11,744,421 · App. 17/154,310 · Granted Sep 5, 2023

Surface cleaning apparatus

Inventor: Wayne Ernest Conrad (Hampton, CA)
Assignee: Omachron Intellectual Property Inc.
A47L9/1658A47L9/127A47L9/165A47L9/2842A47L5/24
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Quick Facts
Patent No.
US 11,744,421
App. No.
17/154,310
Granted
Sep 5, 2023
Kind
B2
Abstract

A surface cleaning apparatus includes first and second pre-motor filters that are in parallel.

Claims (30)

1. A surface cleaning apparatus comprising:

(a) an air flow path extending from a dirty air inlet to a clean air outlet with an air treatment member and a suction motor positioned in the air flow path; and,

(b) a first pre-motor filter having an upstream face and a downstream face, the first pre-motor filter is positioned in the air flow path downstream of the air treatment member and upstream of the suction motor; and,

(c) a second pre-motor filter having an upstream face and a downstream face, the second pre-motor filter is positioned in the air flow path downstream of the air treatment member and upstream of the suction motor,

wherein the first pre-motor filter and the second pre-motor filter are in parallel in the air flow path, and

wherein neither of the first pre-motor filter and the second pre-motor filter is positioned upstream from the other.

2. The surface cleaning apparatus of claim 1 wherein the first pre-motor filter and the second pre-motor filter are provided at different locations in the surface cleaning apparatus.

3. The surface cleaning apparatus of claim 1 wherein the surface cleaning apparatus is a hand vacuum cleaner.

4. The surface cleaning apparatus of claim 1 wherein neither of the upstream and downstream faces of first pre-motor filter faces any of the upstream and downstream faces of the second pre-motor filter.

5. The surface cleaning apparatus of claim 1 wherein the air flow path comprises a first air flow path portion and a second air flow path portion, the first air flow path portion extends from the air treatment member to the suction motor and the first pre-motor filter is positioned in the first air flow path portion, and the second air flow path portion extends from the air treatment member to the suction motor and the second pre-motor filter is positioned in the second air flow path portion.

6. The surface cleaning apparatus of claim 5 wherein, a first portion of air that enters the dirty air inlet passes through the first pre-motor filter and a second portion of the air that enters the dirty air inlet passes through the second pre-motor filter and the first portion and the second portion of air merge upstream of the suction motor.

7. The surface cleaning apparatus of claim 1 wherein, a first portion of air that enters the dirty air inlet passes through the first pre-motor filter and a second portion of the air that enters the dirty air inlet passes through the second pre-motor filter and the first portion and the second portion of air merge upstream of the suction motor.

8. A surface cleaning apparatus comprising:

(a) an air flow path extending from a dirty air inlet to a clean air outlet with an air treatment member and a suction motor positioned in the air flow path; and,

(b) a first pre-motor filter having an upstream face and a downstream face, the first pre-motor filter is positioned in the air flow path downstream of the air treatment member and upstream of the suction motor; and,

(c) a second pre-motor filter having an upstream face and a downstream face, the second pre-motor filter is positioned in the air flow path downstream of the air treatment member and upstream of the suction motor,

wherein neither of the upstream and downstream faces of first pre-motor filter faces any of the upstream and downstream faces of the second pre-motor filter.

9. The surface cleaning apparatus of claim 8 wherein the first pre-motor filter and the second pre-motor filter are provided at different locations in the surface cleaning apparatus.

10. The surface cleaning apparatus of claim 8 wherein the surface cleaning apparatus is a hand vacuum cleaner.

11. The surface cleaning apparatus of claim 8 wherein the air flow path comprises a first air flow path portion and a second air flow path portion, the first air flow path portion extends from the air treatment member to the suction motor and the first pre-motor filter is positioned in the first air flow path portion, and the second air flow path portion extends from the air treatment member to the suction motor and the second pre-motor filter is positioned in the second air flow path portion.

12. The surface cleaning apparatus of claim 11 wherein, a first portion of air that enters the dirty air inlet passes through the first pre-motor filter and a second portion of the air that enters the dirty air inlet passes through the second pre-motor filter and the first portion and the second portion of air merge upstream of the suction motor.

13. The surface cleaning apparatus of claim 8 wherein, a first portion of air that enters the dirty air inlet passes through the first pre-motor filter and a second portion of the air that enters the dirty air inlet passes through the second pre-motor filter and the first portion and the second portion of air merge upstream of the suction motor.

14. A surface cleaning apparatus comprising:

(a) an air flow path extending from a dirty air inlet to a clean air outlet with an air treatment member and a suction motor positioned in the air flow path, the air flow path comprises a first air flow path portion that extends from the air treatment member to the suction motor and a second air flow path portion that extends from the air treatment member to the suction motor;

(b) a first pre-motor filter having an upstream face and a downstream face, the first pre-motor filter is positioned in first air flow path portion; and,

(c) a second pre-motor filter having an upstream face and a downstream face, the second pre-motor filter is positioned in the second air flow path portion.

15. The surface cleaning apparatus of claim 14 wherein the first pre-motor filter and the second pre-motor filter are provided at different locations in the surface cleaning apparatus.

16. The surface cleaning apparatus of claim 14 wherein the surface cleaning apparatus is a hand vacuum cleaner.

17. The surface cleaning apparatus of claim 14 wherein neither of the upstream and downstream faces of first pre-motor filter faces any of the upstream and downstream faces of the second pre-motor filter.

18. The surface cleaning apparatus of claim 14 wherein, a first portion of air that enters the dirty air inlet passes through the first pre-motor filter and a second portion of the air that enters the dirty air inlet passes through the second pre-motor filter and the first portion and the second portion of air merge upstream of the suction motor.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 21, 2021
From: CONRAD, WAYNE ERNEST
To: OMACHRON INTELLECTUAL PROPERTY INC.
Reel/Frame 054984/0802 →
Continuity (3)
Continuation 16419993 · May 22, 2019
Continuation In Part 15993189 · May 30, 2018
Related Publication 20210137335A1 · May 13, 2021
Cited By (1)
US 12,465,183