Curved Seal on Filter Element and Protective Seal Mold

Patent metadata

Field	Value
Publication number	US-2022018316-A1
Application number	US-201917295686-A
Country	US
Kind code	A1
Filing date	Nov 22, 2019
Priority date	Nov 28, 2018
Publication date	Jan 20, 2022
Grant date	—

Abstract

A filter seal member mold includes a first mold end and a second mold end disposed axially away from the first mold end. A first mold surface is disposed between the first mold end and the second mold end and includes at least one lobe mold and at least one guide channel mold. The at least one lobe mold is configured to form at least one lobe on an end of a filter element. The at least one guide channel mold is configured to form at least one guide channel on the end of the filter element. A second mold surface is disposed between the first and second mold end and disposed radially away from the first mold surface. A mold channel is formed between a first mold surface and a second mold surface. The mold channel includes a closed portion and an open portion adjacent the second mold end.

First claim

1 . A filter seal member mold comprising:
a first mold end; a second mold end disposed axially away from the first mold end; a first mold surface disposed between the first mold end and the second mold end, the first mold surface comprising a first plurality of lobe molds and at least one guide channel mold, each lobe mold in the first plurality of lobe molds has a substantially dorsal shape, the first plurality of lobe molds configured to form at least one lobe on an end of a filter element and the at least one guide channel mold configured to form at least one guide channel on the end of the filter element; a second mold surface disposed between the first mold end and the second mold end and disposed radially away from the first mold surface; and a mold channel formed between the first mold surface and the second mold surface, the mold channel comprising a closed portion adjacent the first mold end and an open portion adjacent the second mold end, the mold channel configured to receive the end of the filter element and form a filter seal member on the filter element.

2 . The filter seal member mold of claim 1 , wherein the at least one guide channel mold is a plurality of guide channel molds, each guide channel mold in the plurality of guide channel molds disposed between a pair of lobe molds in the plurality of lobe molds.

3 . The filter seal member mold of claim 2 , wherein the plurality of guide channel molds is a first plurality of guide channel molds, further comprising a second plurality of lobe molds disposed on the second mold surface and a second plurality of guide channel molds disposed on the second mold surface, each guide channel mold in the second plurality of guide channel molds disposed between a pair of lobe molds in the second plurality of lobe molds.

4 . The filter seal member mold of claim 3 , wherein each lobe in the first plurality of lobe molds is aligned with a corresponding lobe in the second plurality of lobe molds.

5 . The filter seal member mold of claim 3 , wherein each lobe mold in the second plurality of lobe molds has a substantially dorsal shape.

6 . The filter seal member mold of claim 1 , wherein each lobe in the first plurality of lobe molds is parallel to an adjacent lobe in the plurality of lobe molds.

7 . The filter seal member mold of claim 1 , wherein the second mold surface is disposed radially inward from the first mold surface.

8 . The filter seal member mold of claim 1 , wherein the first mold surface is disposed radially inward from the second mold surface.

9 . The filter seal member mold of claim 1 , further comprising a support ring disposed within the mold channel, the support ring retained on the filter seal member when the filter element is removed from the filter seal member mold, the support ring configured to impede compression of the filter seal member.

10 . The filter seal member mold of claim 9 , wherein the at least one lobe mold is a first plurality of lobe molds and the at least one guide channel mold is a first plurality of guide channel molds, further comprising a second plurality of lobe molds disposed on the second mold surface and a second plurality of guide channel molds disposed on the second mold surface, wherein the support ring is disposed between the first plurality of lobe molds and the second plurality of lobe molds, each guide channel mold in the first plurality of guide channel molds disposed between a pair of lobe molds in the first plurality of lobe molds, and each guide channel mold in the second plurality of guide channel molds disposed between a pair of lobe molds in the second plurality of lobe molds.

11 . The filter seal member mold of claim 10 , wherein the support ring comprises:
a first ring end; a second ring end disposed axially away from the first ring end; a first ring surface disposed between the first ring end and the second ring end; a second ring surface disposed radially away from the first ring surface; and a plurality of support surfaces along the second ring end, each support surface in the plurality of support surfaces disposed above a lobe in the first plurality of lobe molds.

12 . The filter seal member mold of claim 11 , wherein the support ring further comprises a plurality of openings formed along the first ring surface and second ring surface adjacent the first ring end, the plurality of ring openings configured to allow for material to form through portions of the support ring and retain the support ring within the filter seal member.

13 . The filter seal member mold of claim 11 , wherein each support surface in the plurality of support surfaces has a substantially dorsal shape.

14 . The filter seal member mold of claim 1 , further comprising a mold opening formed between the first mold end and the second mold end, the mold opening disposed radially inward of the mold channel.

15 . The filter seal member mold of claim 14 , wherein the mold channel comprises a plurality of support surfaces and a plurality of hook openings adjacent the first mold end, each hook opening in the plurality of hook openings extending from one support surface to another support surface in the plurality of support surfaces, plurality of support surfaces and a plurality of hook openings form a plurality of seal support surfaces and a plurality of seal hook openings on the filter seal member on the filter element.

16 . A method of forming a filter seal member on a filter element, the method comprising:
providing a filter media comprising a first filter media end and a second filter media end axially disposed from the first filter media end; securing an endplate to the first filter media end; providing a filter seal member mold, the seal member mold comprising a first mold end, a second mold end disposed axially away from the first mold end, a first mold surface comprising a plurality of lobe molds, each lobe mold in the plurality of lobe modes has a substantially dorsal shape, the first mold surface disposed between the first mold end and the second mold end, a second mold surface disposed between the first mold end and the second mold end and disposed radially away from the first mold surface, and a mold channel formed between the first mold surface and the second mold surface, the mold channel comprising a closed portion adjacent the first mold end and an open portion adjacent the second mold end, and wherein the first mold surface comprises at least one lobe mold and at least one guide channel mold; dispensing a filter seal material into the mold channel; and inserting the second filter media end into the mold channel to form the filter seal member on the second filter media end, the filter seal member comprising at least one guide channel formed by the at least one guide channel mold.

17 . A filter element comprising:
a first filter end; a second filter end disposed axially away from the first filter end; filter media disposed between the first filter end and the second filter end; a filter seal member formed on the first filter end, the filter seal member comprising a first lobe, a second lobe, and a guide channel, the guide channel disposed between the first lobe and the second lobe, the first lobe being non-parallel to the second lobe.

18 . The filter element of claim 17 , wherein the filter seal member further comprises a support ring protruding axially from the filter seal member away from the second filter end, the support ring comprising a ring lobe, the ring lobe disposed axially above the first lobe and configured to impede compression

Assignees

• Cummins Filtration Ip Inc

Inventors

• Holzmann Mark V
• Manke Scott G

Classifications

• F02M35/02441

  Materials or structure of filter elements, e.g. foams · CPC title

• F02M35/02408 Primary

  Manufacturing filter elements · CPC title

• F02M35/024

  using filters, e.g. moistened (F02M35/026 takes precedence; cleaning of the filtering material F02M35/08) · CPC title

• F02M35/0203

  by using clamps, catches, locks or the like, e.g. for disposable plug-in filter cartridges · CPC title

• B01D2271/025

  Making of sealings · CPC title