Pig design for use with application materials
First Claim
1. A pig for delivering a coating material through a piggable line of a system for the mass-production coating of workpieces comprising:
- a pig part;
two flexible sealing lips which are separated from each other along a longitudinal axis of the pig part and which are coaxial to the longitudinal axis, and which project in the radial direction from the pig part, and each sealing lip having a circular outer surface coaxial to the longitudinal axis facing outwards in the radial direction, wherein the sealing lips can bend from a rest position, in which the lips are set outside of the piggable line, inwards in the radial direction into an operating position within a piggable line, and wherein each sealing lip (15) has a sealing edge positioned between substantially flat surface parts, and that the sealing lip is shaped and configured so that in the operating position one of the surface parts extends in the axial direction from the sealing edge towards the other sealing lip and lies substantially parallel to the longitudinal axis of the pig part.
3 Assignments
0 Petitions
Accused Products
Abstract
The two sealing lips of a pig, which is driven by a pushing medium for delivering a coating material for the mass-production coating of workpieces, have a self-sharpening sealing edge contacting the inner wall of the piggable line. Flat outer surface parts of the sealing lip formed ahead of and behind the sealing edge are angled against the inner wall of the line for an unloaded pig, while the inner surface part in the axial direction is pressed flat against the line under loading by the pushing medium. The production of the pig is realized through turning and subsequent shaping of the sealing lips in a transport sleeve in which the pig is kept and brought to its insertion location.
33 Citations
48 Claims
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1. A pig for delivering a coating material through a piggable line of a system for the mass-production coating of workpieces comprising:
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a pig part;
two flexible sealing lips which are separated from each other along a longitudinal axis of the pig part and which are coaxial to the longitudinal axis, and which project in the radial direction from the pig part, and each sealing lip having a circular outer surface coaxial to the longitudinal axis facing outwards in the radial direction, wherein the sealing lips can bend from a rest position, in which the lips are set outside of the piggable line, inwards in the radial direction into an operating position within a piggable line, and wherein each sealing lip (15) has a sealing edge positioned between substantially flat surface parts, and that the sealing lip is shaped and configured so that in the operating position one of the surface parts extends in the axial direction from the sealing edge towards the other sealing lip and lies substantially parallel to the longitudinal axis of the pig part. - View Dependent Claims (4, 5, 6, 7, 8, 14, 16, 17)
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2. (canceled)
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3. (canceled)
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9-13. -13. (canceled)
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15. (canceled)
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18-25. -25. (canceled)
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26. A pig for moving coating material through a conduit comprising:
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a substantially cylindrical body; and
a first radial lip having a length and thickness and integrally formed with the body and including a resilient ring section extending from the body and an outer section extending from the resilient ring section to an end portion and having first and second outer surfaces angled with respect to one another and a sealing edge defined between the first and second outer surfaces. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37-43. -43. (canceled)
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45. A pig for delivering coating through a line of a system for coating workpieces, comprising:
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a body portion having a longitudinal axis, opposed end portions and a midportion between said end portions;
sealing lips including a generally radial portion integral with said midportion of said body portion and generally axial end portions extending outwardly toward said end portions of said body portion; and
said midportion of said body portion including a radial contact portion between said sealing lips having radial surfaces opposite said generally radial portions of said sealing lips preventing said sealing lips from being deformed axially beyond said contact portion. - View Dependent Claims (46, 47, 48)
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Specification