Gasketless connecting adapter
First Claim
1. A gasketless filter adapter for airtight joining of a first filter to a second filter, said gasketless filter adapter comprising:
- a flexible substantially air impermeable cover element being adapted to seal at a first face surface thereof over a face of a first filter;
a second face surface having a central aperture therein;
a fastener operatively associated with said central aperture for mating with and securing thereto the second filter such that air passes through the second filter into the first filter;
the second face surface being adapted to sealingly engage the second filter.
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Accused Products
Abstract
The present disclosure is directed to a gasketless connecting filter adapter (20, 40) for airtight joining of a first filter (23) to a second filter (33). The invention includes a flexible cover element (42) being adapted to seal at a first face surface (41) thereof over the face of a first filter (23), and including a second face surface (55) having a recessed central aperture (59) therein. Disposed in the central aperture (59) are connection apparatus for mating with and securing thereto the second filter such that air passes through the second filter (23) into the first filter (33). The second face surface (55) further includes an integral and axially extending resilient lip seal (39) being adapted to sealingly engage the second cartridge (33). The present invention may be of one or preferably two piece molded construction, of particular cross section.
44 Citations
21 Claims
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1. A gasketless filter adapter for airtight joining of a first filter to a second filter, said gasketless filter adapter comprising:
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a flexible substantially air impermeable cover element being adapted to seal at a first face surface thereof over a face of a first filter; a second face surface having a central aperture therein; a fastener operatively associated with said central aperture for mating with and securing thereto the second filter such that air passes through the second filter into the first filter; the second face surface being adapted to sealingly engage the second filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A filter adapter for airtight joining of a first filter to a second filter of a breathing mask, said filter adapter comprising:
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a flexible substantially air impermeable cover element including; a female connector portion being adapted to sealably receive the face of a first filter therein; a male connector portion being adapted to sealably engage the second filter such that air passes through the second filter into the first filter; wherein said connecting filter adapter joins the first filter to the second filter in a gasket-free and airtight manner.
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21. A method of assembling first and second filter elements, said method comprising the steps of:
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(a) providing a gasketless filter adapter including; (i) a flexible substantially air impermeable cover element being adapted to seal at a first face surface thereof over a face of a first filter; (ii) a second face surface having a central aperture therein; (iii) a fastener operatively associated with said central aperture for mating with and securing thereto the second filter such that air passes through the second filter into the first filter, wherein the second face surface is adapted to sealingly engage the second filter; (b) sealing the first face of the flexible substantially air impermeable cover element over the face of the first filter; and (c) mating with and securing the fastener to the second filter, wherein said first filter is joined in a gasket-free and airtight manner to the second filter.
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Specification