US5505603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing an air filter
Assignee: Marelli Europe SpA
•
Filing: 1994-02-07
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Granted: 1996-04-09
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Expires: 2014-02-07
Abstract
Abstract An apparatus is disclosed for adhering a synthetic resin gasket to a filtering element of an air filter. The apparatus incorporates a mold having a synthetic resin forming gasket cavity therein in which the synthetic resin gasket is formed. The cavity has an injection recess portion and an expansion recess portion. The two portions are separated by a movable mold element which may be positioned to substantially separate or substantially adjoin the injection recess and expansion recess portions. When the movable mold element is in the separation position, synthetic resin may be introduced into the injection recess position without contacting the filtering element. When the movable mold element is in the adjoining position, the resin may expand into the expansion recess until the resin contacts and adheres to the filter element. An automated version of this apparatus is also disclosed.
Inventors
- 👤 Fabrizio Baracchi
- 👤 Silvano Casalicchio
- 👤 Mauro Gallino
- 👤 Luigi Tarditi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:09
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D46/0001; B01D46/10; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/38; B29C44/385; B29C70/00; B29C70/68; B29C70/74; B29C70/76; B29C70/763; F; F02; F02M; F02M35/00; F02M35/02; F02M35/024; B01D2265/00; B01D2265/04; B01D2271/00; B01D2271/02; B01D2271/027; B01D2279/00; B01D2279/60; B29K; B29K2105/00; B29K2105/04; B29L; B29L2031/00; B29L2031/14; Y; Y10; Y10S; Y10S264/00; Y10S264/48; Y10S55/00; Y10S55/05
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
159 words
A molding apparatus for manufacturing an air filter, said filter comprising a filtering element, said apparatus comprising: means for positioning said filtering element in a mold, said mold having a cavity, said cavity having an injection recess portion and an expansion recess portion such that said filtering element abuts said expansion recess portion of said cavity; means for forming an edge made of synthetic resin around said filtering element, wherein said forming means comprises a means for injecting said resin into said injection recess portion of said cavity, said resin in said injection recess initially not being in substantial contact with said filtering element by virtue of the positioning of a movable mold element which substantially separates said injection recess from said expansion recess; and means for connecting said injection recess to said expansion recess by moving said movable mold element such that said resin is able to expand until said resin contacts and adheres to said filtering element.
Claim 2
Dependent Claim
159 words
A molding apparatus for manufacturing an air filter, said filter comprising a filtering element, said apparatus comprising: means for positioning said filtering element in a mold, said mold having a cavity, said cavity having an injection recess portion and an expansion recess portion such that said filtering element abuts said expansion recess portion of said cavity; means for forming an edge made of synthetic resin around said filtering element, wherein said forming means comprises a means for injecting said resin into said injection recess portion of said cavity, said resin in said injection recess initially not being in substantial contact with said filtering element by virtue of the positioning of a movable mold element which substantially separates said injection recess from said expansion recess; and means for connecting said injection recess to said expansion recess by moving said movable mold element such that said resin is able to expand until said resin contacts and adheres to said filtering element.
Claim 3
Dependent Claim
44 words
The apparatus of claim 1, wherein said positioning means further comprises an upper portion movably adjoined to a lower portion, said positioning means having an open position and a closed position, said open position allowing for the insertion or removal of said filtering element.
Claim 4
Dependent Claim
20 words
The apparatus of claim 2, wherein said cavity is substantially formed when said positioning means is in said closed position.
Claim 5
Dependent Claim
25 words
The apparatus of claim 3, wherein said mold has an injection channel therein, said channel allowing for the introduction of said resin into said cavity.
Claim 6
Dependent Claim
21 words
The apparatus of claim 4, wherein said movable mold element is movably mounted to said upper portion of said positioning means.
Claim 7
Dependent Claim
15 words
The apparatus of claim 5, wherein said movable mold element is positioned by an actuator.
Claim 8
Dependent Claim
84 words
The molding apparatus of claim 6, wherein said apparatus further comprises: a means for rotating a carousel, said carousel comprising a plurality of molding stations, each molding station having at least one molding apparatus mounted to said molding station; and a means for transferring synthetic resin into said cavity of each molding apparatus, said transferring means positioned such that said injection channel of each molding apparatus may be aligned with said injection unit to allow for the transfer of said resin to said cavity.
Claim 9
Dependent Claim
75 words
The apparatus of claim 7, wherein said apparatus further comprises: molding stations each comprising two molding apparatus mounted to each molding station; and means for transferring synthetic resin into said cavity of each molding apparatus, said transferring means positioned such that said injection channels of both molds of each molding station may be aligned with said transferring means to allow for the transfer of said resin to said cavities of each of said molding stations.
Claim 10
Dependent Claim
161 words
A molding apparatus for manufacturing an air filter, said filter comprising a filtering element, said apparatus comprising: a mold having a synthetic resin gasket forming cavity therein, said cavity having an injection recess portion and an expansion recess portion, said filtering element being able to be positioned in said mold substantially adjacent to said expansion recess portion of said cavity; and a movable mold element movably mounted to said mold such that said mold element may be positioned to substantially separate said injection recess portion from said expansion recess portion or to substantially adjoin said expansion recess portion to said expansion recess portion such that said synthetic resin may be introduced into said injection recess without contacting said filtering element when said movable mold element is in said separation position, and such that said resin may expand into said expansion recess until said resin contacts and adheres to said filtering element when said movable mold element is in said adjoining position.
Claim 11
Dependent Claim
161 words
A molding apparatus for manufacturing an air filter, said filter comprising a filtering element, said apparatus comprising: a mold having a synthetic resin gasket forming cavity therein, said cavity having an injection recess portion and an expansion recess portion, said filtering element being able to be positioned in said mold substantially adjacent to said expansion recess portion of said cavity; and a movable mold element movably mounted to said mold such that said mold element may be positioned to substantially separate said injection recess portion from said expansion recess portion or to substantially adjoin said expansion recess portion to said expansion recess portion such that said synthetic resin may be introduced into said injection recess without contacting said filtering element when said movable mold element is in said separation position, and such that said resin may expand into said expansion recess until said resin contacts and adheres to said filtering element when said movable mold element is in said adjoining position.
Claim 12
Dependent Claim
42 words
The apparatus of claim 9, wherein said mold further comprises an upper portion movably adjoined to a lower portion, said mold having an open position and a closed position, said open position allowing for the insertion or removal of said filtering element.
Claim 13
Dependent Claim
21 words
The apparatus of claim 10, wherein said gasket forming cavity is substantially formed when said mold is in said closed position.
Claim 14
Dependent Claim
27 words
The apparatus of claim 11, wherein said mold has an injection channel therein, said channel allowing for the introduction of said resin into said gasket forming cavity.
Claim 15
Dependent Claim
20 words
The apparatus of claim 12, wherein said movable mold element is movably mounted to said upper portion of said mold.
Claim 16
Dependent Claim
15 words
The apparatus of claim 13, wherein said movable mold element is positioned by an actuator.
Claim 17
Dependent Claim
77 words
The molding apparatus of claim 14, wherein said apparatus further comprises: a rotating carousel having a plurality of molding stations, each molding station having at least one molding apparatus mounted to said molding station; and a synthetic resin injection unit adjacent to said apparatus, said injection unit positioned such that said injection channel of each molding apparatus may be aligned with said injection unit to allow for the transfer of said resin to said gasket forming cavity.
Claim 18
Dependent Claim
74 words
The apparatus of claim 15, wherein said apparatus further comprises: molding stations each comprising two molding apparatus mounted to each molding station; and a synthetic resin injection unit adjacent to said apparatus, said injection unit positioned such that said injection channels of both molds of each molding station may be aligned with said injection unit to allow for the transfer of said resin to said gasket forming cavities of each of said molding stations.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-09 | 1999-10-09 | 2000-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-09 | 2003-10-09 | 2004-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-09 | 2007-10-09 | 2008-04-09 | $7700.00 | Window Closed / Lapsed |