Filter
First Claim
Patent Images
1. A filter for a medium passing therethrough, comprising:
- a filter body including a plurality of filter openings;
said filter openings each having a passage cross-section; and
said filter opening passage cross-sections vary automatically in response to a variable inherent in the medium passing therethrough, said filter openings being substantially screened or covered over by means whose position relative to said filter openings varies under the influence of the heat of said medium passing therethrough and said means including a perforated plate with openings somewhat longer than openings formed in a filter plate and said perforated plate is shifted under the influence of the heat of said medium passing therethrough by means of at least one element acting on said filter plate.
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0 Petitions
Accused Products
Abstract
A filter having filter openings, which openings vary in cross-section automatically in accordance with an inherent variable of the medium passing there through. The openings can vary in response to the heat of the medium passing through the openings. The openings can include a perforated plate screening the openings and having elements, which shift the plate relative to the openings. The elements can be springs and can include a shape memory alloy.
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Citations
17 Claims
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1. A filter for a medium passing therethrough, comprising:
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a filter body including a plurality of filter openings; said filter openings each having a passage cross-section; and said filter opening passage cross-sections vary automatically in response to a variable inherent in the medium passing therethrough, said filter openings being substantially screened or covered over by means whose position relative to said filter openings varies under the influence of the heat of said medium passing therethrough and said means including a perforated plate with openings somewhat longer than openings formed in a filter plate and said perforated plate is shifted under the influence of the heat of said medium passing therethrough by means of at least one element acting on said filter plate. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A dishwashing machine including a filter for a medium passing therethrough, comprising:
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a filter body including a plurality of filter openings; said filter openings each having a passage cross-section; and means for varying said filter opening passage cross-sections automatically in response to a variable inherent in the medium passing therethrough, said filter openings being substantially screened or covered over by means whose position relative to said filter openings varies under the influence of the heat of said medium passing therethrough and said means including a perforated plate with openings somewhat longer than openings formed in a filter plate and said perforated plate is shifted under the influence of the heat of said medium passing therethrough by means of at least one element acting on said filter plate. - View Dependent Claims (8, 9, 10, 11, 12)
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13. to “
- A dishwashing machine including a filter for a medium passing therethrough, comprising;
a filter body including a plurality of filter openings;
said filter openings each having a passage cross-section; and
means for varying said filter opening passage cross-sections automatically in response to a variable inherent in the medium passing therethrough wherein said means includes a perforated plate with openings, said perforated plate being shiftable relative to said filter openings between a first position and a second position such that, in said first position, said openings of said perforated plate are at offset from said filter openings such that said perforated plate substantially screens or covers over said filter openings and, in said second position, said openings of said perforated plate are at a lesser offset to said filter openings than in said first position such that said perforated plate does not screen or cover over said filter openings to the same extent as in said first position, and at least one element acting on said perforated plate to shift said perforated plate under the influence of a change of temperature of said medium passing therethrough between said first position and said second position.
- A dishwashing machine including a filter for a medium passing therethrough, comprising;
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14. A filter for a medium passing therethrough, comprising:
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a filter body including a plurality of filter openings; said filter openings each having a passage cross-section; and means for varying said filter opening passage cross-sections automatically in response to a variable inherent in the medium passing therethrough, said means for varying said filter opening passage cross-sections including; a perforated plate with openings, said perforated plate being shiftable relative to said filter openings between a first position and a second position such that, in said first position, said openings of said perforated plate are at offset from said filter openings such that said perforated plate substantially screens or covers over said filter openings and, in said second position, said openings of said perforated plate are at a lesser offset to said filter openings than in said first position such that said perforated plate does not screen or cover over said filter openings to the same extent as in said first position, and at least one element acting on said perforated plate to shift said perforated plate under the influence of a change of temperature of said medium passing therethrough between said first position and said second position. - View Dependent Claims (15, 16, 17)
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Specification