Arrangement, sealing and method for limiting the intrusion of particles into a gap
AssigneesHans-Achim Reimann, Philipp Hafner
InventorsHans-Achim Reimann, Philipp Hafner
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Abstract
Provided are means for limiting the intrusion of particles into a gap formed between parts of a device which are to perform a periodic motion relative to each other when the device is in use. The means include an asymmetric structured surface which is configured to delimit the gap towards one of the parts and a flexible structure which is configured to be attached to the other part and to extend into the gap.
Claims14
An arrangement for limiting the intrusion of particles into a gap of a device, comprising:
- a first part having a structured surface extending between a first end and opposing second end, the structured surface comprising a plurality of outwardly projecting barriers that are disposed at spaced locations between the first end and the second end, each of the plurality of barriers having an asymmetric profile that includes a first slope facing toward the first end and an opposing second slope facing toward the second end, the second slope being more gentle than the first slope;
- a second part having an interior surface that at least partially overlays the structured surface of the first part, the gap being formed between the interior surface of the second part and the structured surface of the first part, the second part reciprocating relative to the first part along a path of motion during a use of the device;
- and
- a plurality of flexible structures each attached to the second part so as to project into the gap toward the structured surface of the first part, each of the plurality of flexible structures being spaced apart along a length of the interior surface of the second part, wherein the plurality of flexible structures are configured to push particles located within the gap past the barriers toward an entry end of the gap when the second part is reciprocating relative to the first part.
A self-cleaning sealing which is configured to limit a depth up to which particles intrude into a gap of a device, comprising:
- a first part having a structured surface extending between a first end and opposing second end, the structured surface comprising a plurality of outwardly projecting barriers that are disposed at spaced locations between the first end and the second end, each of the plurality of barriers having an asymmetric profile that includes a first slope facing toward the first end and an opposing second slope facing toward the second end, the second slope being more gentle than the first slope;
- a second part having an interior surface that at least partially overlays the structured surface of the first part, the gap being formed between the interior surface of the second part and the structured surface of the first part, the second part reciprocating relative to the first part along a path of motion during a use of the device;
- and
- a plurality of flexible structures each attached to the second part so as to project into the gap toward the structured surface of the first part, each of the plurality of flexible structures being spaced apart along a length of the interior surface of the second part, wherein the plurality of flexible structures are configured to push particles located within the gap past the barriers toward an entry end of the gap when the second part is reciprocating relative to the first part.
Dependencies are inferred from the claim text.