# US 11,248,618 B1 · O-ring for side channel blower and side channel blower including said o-ring

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- Number: US 11,248,618 B1
- Document ID: US11248618B1
- Status: Granted
- Kind: B1
- Application number: 16/351,624
- Filed: 2019-03-13
- Granted: 2022-02-15
- Earliest claimed: 2019-03-13
- Assignees: Airtech Group, Inc.
- Applicants: Eagletree-Pump Acquisition Corp.
- Inventors: Thomas Stergioulas; Raphael Sagher
- Web page: https://patentgrep.com/patent/US11248618B1

## CPC

- F04D 29/083: {especially adapted for elastic fluid pumps}
- F04D 23/008: {Regenerative pumps (for liquids or for liquids and elastic fluids F04D5/002)}
- F04D 29/403: {especially adapted for elastic fluid pumps}
- F16J 15/022: {characterised by structure or material}
- F16J 15/062: {characterised by the geometry of the seat}
- F04D 29/4226: {Fan casings}
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)
- F16J: PISTONS {(specially adapted for dampers F16F9/32)}; CYLINDERS; SEALINGS

## Abstract

An O-ring and a side channel blower employing an O-ring for providing a gap-free, air-tight seal of the blower channel and side-by-side pressure and vacuum ports. The O-ring includes a generally circular, main O-ring have two free ends for sealing a majority of the blower impeller channel, and two relatively smaller O-rings, each of which is attached to an opposite one of the free ends of the main O-ring and are spaced apart in a side-by-side manner and are connected to one another by a bridge member. The small O-rings are configured and dimensioned so that one of the small O-rings serves to seal the vacuum port of the blower and that the other of the small O-rings serves to seal the pressure port of the blower, with the two small O-rings and bridge member and free ends of the main O-ring arranged to create a generally spectacle-like shape.

## Claims

### Claim 1

An O-ring for providing an air-tight seal of a blower impeller channel and side-by-side pressure and vacuum ports of a side channel blower, comprising;
a circular, main O-ring for sealing a majority of the blower impeller channel, said main O-ring having two free ends, wherein said main O-ring lies in a first plane, wherein the majority of said main O-ring has an annular shape and wherein a minority thereof defined by said two free ends thereof extend outwardly from said majority of said main O-ring;
two relatively smaller, spaced-apart, side-by-side, identically-sized port O-rings lying in a second plane so that they are disposed perpendicular to said main O-ring, said port O-rings each having a distal side and a proximal side relative to one another, wherein each of said port O-rings is attached to an opposite one of said free ends of said main O-ring at a midpoint of said respective distal sides thereof, and wherein said port O-rings are connected to one another at a midpoint of their respective proximal sides by a U-shaped O-ring bridge member lying in the same plane as said main O-ring, and wherein said port O-rings are configured and dimensioned so that one of said port O-rings serves to seal the vacuum port of the side channel blower and that the other of said port O-rings serves to seal the pressure port of the side channel blower, with said two port O-rings and O-ring bridge member and free ends of said main O-ring arranged and configured to simulate a spectacle-like shape with said two port O-rings simulating a pair of spaced-apart eyeglass rims of an eyeglass frame, with said U-shaped bridge member simulating a bridge of the eyeglass frame, and wherein the free ends of said main O-ring simulating a front end portion of a pair of temples of the eyeglass frame;
wherein said O-ring is made of a deformable resilient material so that it can adapt to the shape of the surfaces which are to be sealed;
wherein said resilient material is a member selected from the group consisting of rubber, synthetic rubber and an elastomer; and
wherein said main O-ring and said two smaller port O-rings are formed as one single unitary O-ring.

### Claim 2 (depends on 1)

The O-ring according to claim 1, wherein said member is FKM.

### Claim 3

A side channel blower of the type comprising:
a housing comprising at least two casing members which are joined together to define a circular impeller channel and two side-by-side vacuum and pressure ports;
a rotatable impeller received in said circular impeller channel;
a circular, main O-ring having two free ends for sealing a majority of the blower impeller channel, said main O-ring having two free ends, wherein said main O-ring lies in a first plane, wherein a majority of said main O-ring has an annular shape and a remainder thereof defined by said two free ends thereof extend outwardly from said majority of said main O-ring;
two relatively smaller, side-by-side, identically-sized port O-rings lying in a second plane so that they are disposed perpendicular to said main O-ring, said port O-rings each having a distal side and a proximal side relative to one another, wherein each of said port O-rings is attached to an opposite one of said free ends of said main O-ring at a midpoint of said respective distal sides thereof, and wherein said port O-rings are connected to one another by a U-shaped O-ring bridge member lying in the same plane as said main O-ring at a midpoint of their respective proximal sides thereof and wherein said port O-rings are configured and dimensioned so that one of said port O-rings serves to seal the vacuum port of the side channel blower and that the other of said port O-rings serves to seal the pressure port of the side channel blower, with said two smaller port O-rings and O-ring bridge member and free ends of said main O-ring arranged and configured to simulate a spectacle-like shape with said two port O-rings simulating a pair of spaced-apart eyeglass rims of an eyeglass frame, with said U-shaped bridge member simulating a bridge of the eyeglass frame, and wherein the free ends of said main O-ring simulate a front end portion of a pair of temples of the eyeglass frame;
wherein said O-ring is made of a deformable resilient material so that it can adapt to the shape of the surfaces which are to be sealed;
wherein said resilient material is a member selected from the group consisting of rubber, synthetic rubber and an elastomer; and
wherein said main O-ring and said two port O-rings are formed as one unitary piece.

### Claim 4 (depends on 3)

The side channel blower according to claim 3, wherein said member is FKM.