Flap-retaining clip for a pressure relief assembly

Patent metadata

Field	Value
Publication number	US-10850593-B2
Application number	US-201615747836-A
Country	US
Kind code	B2
Filing date	Nov 1, 2016
Priority date	Nov 6, 2015
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

A pressure relief assembly includes a housing defining an air passage chamber having at least one opening, and a membrane flap secured within the air passage chamber. The membrane flap is configured to move into an open position to expose the opening(s) to relieve air pressure. A plurality of flap-retaining clips securely couple the membrane flap to the housing. Each of the plurality of the flap-retaining clips includes a main body. A housing-connecting tab extends from a first end of the main body. The housing-connecting tab is retained within a retaining channel formed in the housing. Opposed flap-retention wings laterally extend from opposite sides of the main body. A portion of the membrane flap is trapped between the opposed flap-retention wings and the housing to securely couple the membrane flap to the housing.

First claim

The invention claimed is:

1. A flap-retaining clip configured to securely couple a membrane flap to a housing of a pressure relief assembly, the flap-retaining clip comprising:
a main body having a face;
a housing-connecting tab extending from a first end of the main body, wherein the housing-connecting tab is configured to be inserted into and retained within a retaining channel formed in the housing; and
opposed flap-retention wings laterally extending from opposite sides of the main body, wherein a portion of the membrane flap is configured to be trapped between the opposed flap-retention wings and the housing to securely couple the membrane flap to the housing,
wherein at least a portion of the opposed flap-retention wings is stepped relative to the face of the main body.

2. The flap-retaining clip of claim 1 , wherein each of the opposed flap retention wings comprises an angled lead-in edge that downwardly and outwardly angles from a top end of the main body towards the first end.

3. The flap-retaining clip of claim 2 , wherein the angled lead-in edge is arcuate.

4. The flap-retaining clip of claim 1 , further comprising a rounded tip wherein the rounded tip is configured to guide the membrane flap onto the flap-retaining clip.

5. The flap-retaining clip of claim 4 , further comprising an angled ramp between the rounded tip and the main body.

6. The flap-retaining clip of claim 1 , wherein bottom edges of the opposed flap-retention wings are configured to be separated from a front surface of a portion of the housing, wherein a portion of the membrane flap is configured to be trapped between the front surface and the bottom edges of the opposed flap-retention wings.

7. The flap-retaining clip of claim 1 , further comprising a securing member that extends between the main body and the housing-connecting tab, wherein the securing member is configured to secure the flap-retaining clip within a channel of the housing.

8. The flap-retaining clip of claim 1 , wherein the flap-retaining clip is integrally formed and molded as a single piece.

9. The flap-retaining clip of claim 1 , wherein the flap-retaining clip is molded within a cavity of a forming chamber of a forming assembly, wherein the forming assembly separates in a vertical direction such that the flap-retaining clip remains connected to a core of a top portion of the forming assembly, wherein the flap retaining clip is pushed away from the core by one or more pins of the forming assembly, and wherein a retainer is moved away from the flap-retaining clip to allow the flap retaining clip to be removed from the forming assembly.

10. A pressure relief assembly comprising:
a housing defining an air passage chamber having at least one opening;
a membrane flap secured within the air passage chamber, wherein the membrane flap is configured to move into an open position to expose the at least one opening to relieve air pressure; and
a plurality of flap-retaining clips that securely couple the membrane flap to the housing, wherein each of the plurality of the flap-retaining clips comprises:
a main body having a face;
a housing-connecting tab extending from a first end of the main body, wherein the housing-connecting tab is retained within a retaining channel formed in the housing; and
opposed flap-retention wings laterally extending from opposite sides of the main body, wherein a portion of the membrane flap is trapped between the opposed flap-retention wings and the housing to securely couple the membrane flap to the housing,
wherein at least a portion of the opposed flap-retention wings is stepped relative to the face of the main body.

11. The pressure relief assembly of claim 10 , wherein each of the opposed flap-retention wings comprises an angled lead-in edge that downwardly and outwardly angles from a top end of the main body towards the first end.

12. The pressure relief assembly of claim 10 , wherein each of the plurality of flap-retaining clips comprises a rounded tip upwardly extending from a top end of the main body, wherein the rounded tip guides the membrane flap onto the flap-retaining clip.

13. The pressure relief assembly of claim 12 , wherein each of the plurality of flap-retaining clips comprises an angled ramp between the rounded tip and the main body.

14. The pressure relief assembly of claim 10 , wherein bottom edges of the opposed flap-retention wings are separated from a front surface of a portion of the housing, wherein a portion of the membrane flap is trapped between the front surface and the bottom edges of the opposed flap-retention wings.

15. The pressure relief assembly of claim 10 , wherein each of the plurality of flap-retaining clips comprises a securing member that extends between the main body and the housing-connecting tab, wherein the securing member secures the flap-retaining clip within the retaining channel of the housing.

16. The pressure relief assembly of claim 10 , wherein each of the flap retaining clips is integrally formed and molded as a single piece.

17. The pressure relief assembly of claim 10 , wherein each of the flap retaining clips is molded within a cavity of a forming chamber of a forming assembly, wherein the forming assembly separates in a vertical direction such that the flap-retaining clip remains connected to a core of a top portion of the forming assembly, wherein the flap-retaining clip is pushed away from the core by one or more pins of the forming assembly, and wherein a retainer is moved away from the flap-retaining clip to allow the flap-retaining clip to be removed from the forming assembly.

18. A flap-retaining clip configured to securely couple a membrane flap to a housing of a pressure relief assembly, the flap-retaining clip comprising:
a main body;
a housing-connecting tab extending from a first end of the main body, wherein the housing-connecting tab is configured to be inserted into and retained within a retaining channel formed in the housing;
opposed flap-retention wings laterally extending from opposite sides of the main body, wherein a portion of the membrane flap is configured to be trapped between the opposed flap-retention wings and the housing to securely couple the membrane flap to the housing, wherein each of the opposed flap-retention wings comprises an angled leading edge that downwardly and outwardly angles from a top end of the main body towards a first end, wherein bottom edges of the opposed flap-retention wings are configured to be separated from a front surface of a portion of the housing, wherein a portion of the membrane flap is configured to be trapped between the front surface and the bottom edges of the opposed flap-retention wings;
a rounded tip configured to guide the membrane flap onto the flap-retaining clip; and
an angled surface between the main body and the rounded tip.

19. The flap-retaining clip of claim 18 , wherein the main body includes a face and at least a portion of the opposed-flap retention wings is stepped relative to the face of the main body.

Assignees

• Illinois Tool Works

Inventors

• Carlson Daniel David

Classifications

• F24F2013/1493

  using an elastic membrane · CPC title

• F24F11/745

  the air flow rate increasing with an increase of air-current or wind pressure · CPC title

• B60H1/249 Primary

  using one-way valves · CPC title

• F16K15/035

  with a plurality of valve members · CPC title

• F16K15/144

  the closure elements being fixed along all or a part of their periphery · CPC title