EP0031620A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method for uniting a plastics fixation part attachable to an end portion of a pipe part with a sealing body, plastics fixation part, plastics pipe provided with said fixation part and apparatus for moulding a fixation part
Assignee: Wavin BV
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Filing: 1980-12-18
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Granted: —
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Expires: 2000-12-18
Abstract
Abstract Method for uniting a plastics fixation part 1 with a sealing body 2, comprising a head end 3 and a sealing sleeve 4, by first moulding the sealing body 2 and subsequently moulding the plastics fixation part 1 around the head end 3 of the sealing body 2, thereby protecting the sealing sleeve 4. The fixation part 1 is provided with corrugations 12a, 13a for connecting the fixation part with a socket pipe 21 provided with corrugations on its outer side. The method may be carried out in an apparatus comprising a first mould part 5, a second mould part 6 and a third mould part 7, forming together a moulding space 8, 8a for forming the sealing body and a fourth mould part 10 replacing the first mould part 5, forms a moulding space 11 for moulding the fixation part 1.
Inventors
- 👤 Johannes Hendrikus Beune
- 👤 Warner Jan De Putter
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 15:47
CPC Classifications
F; F16; F16L; F16L47/00; F16L47/06; F16L47/08; F16L47/10; B; B29; B29C; B29C45/00; B29C45/16; B29C45/1676; B29C45/1657; B29C2045/1659; B29C2045/1678
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
71 words
Method for uniting a plastics fixation part 1 being attachable to an end portion of a pipe part, with a sealing body 2 comprising a head end 3 and a sealing sleeve 4, characterized in that after having moulded the sealing body (2) a fixation part (1) of plastics is moulded from a plastics material around the head end (3) of the sealing body (2), whilst protecting the sealing sleeve (4).
Claim 2
Dependent Claim
71 words
Method for uniting a plastics fixation part 1 being attachable to an end portion of a pipe part, with a sealing body 2 comprising a head end 3 and a sealing sleeve 4, characterized in that after having moulded the sealing body (2) a fixation part (1) of plastics is moulded from a plastics material around the head end (3) of the sealing body (2), whilst protecting the sealing sleeve (4).
Claim 3
Dependent Claim
24 words
2, Method according to claim 1, in which the sealing body (2) is formed from a material properly adhering to the fixation part (1).
Claim 4
Dependent Claim
72 words
Method according to claims 1 or 2, in which a sealing body (2) of a resilient plastics material is moulded in a first moulding space (8, 8a) whereupon a second moulding space (11) is formed beside the moulded head end (3) of the sealing body (2) while maintaining the first moulding space (8b) for the sealing sleeve (4) while subsequently the fixation part (1) is moulded in said second moulding space (11).
Claim 5
Dependent Claim
97 words
4, Method according to claims 1 to 3, comprising one or more of the following features: a) the inner side of an end portion of the fixation part (1) is corrugated; b) the fixation part (1) comprises an end portion (18), the thickness of which decreases towards its extremity; c) the sealing sleeve (4) is moulded in a steplike shape; d) the fixation part (1) consists of a polyolefin, such as polyethylene or polypropylene; e) the sealing body (2) is moulded from a cold-curing rubber, or from a thermoplastics rubber; f) the pipe part consists of polyvinylchloride.
Claim 6
Dependent Claim
38 words
Plastics fixation part 1 with a sealing body 2 comprising a head end 3 and a sealing sleeve 4, in which the fixation part (1) has been moulded from a plastics material around a premoulded sealing body (2).
Claim 7
Dependent Claim
38 words
Plastics fixation part 1 with a sealing body 2 comprising a head end 3 and a sealing sleeve 4, in which the fixation part (1) has been moulded from a plastics material around a premoulded sealing body (2).
Claim 8
Dependent Claim
28 words
Plastics fixation part according to claim 5, in which the sealing body (2) is adhered to the fixation part consisting of a thermoplastics, more particularly of a polyolefin.
Claim 9
Dependent Claim
30 words
Plastics fixation part according to claim 5, in which the sealing body (2) is moulded from a resilient plastics material preferably from a cold-curing rubber or from a thermoplastics rubber
Claim 10
Dependent Claim
57 words
Plastics fixation part according to claims 5 to 7, in which the inner side of the fixation part (1) comprises a corrugated end portion (12a, 13a) and/or the thickness of the fixation part (1) decreases towards its free end (18) starting from the corrugated end portion (12a, 13a) and/or the sealing sleeve (4) has a steplike shape.
Claim 11
Dependent Claim
29 words
Pipe part with socket end, provided with a fixation part (1) as claimed in claims 5 to 8 or obtained according to the method of claims 1 to 4.
Claim 12
Dependent Claim
70 words
Apparatus for moulding a fixation part with a sealing body 2, comprising at least a first mould part 5, a second mould part 6 and a third mould part 7, together bounding a first moulding space (8, 8a) in which a fourth mould part (10) forms a second moulding space (11) beside the first moulding space (8, 8a) by replacing the first mould part (5) with said fourth mould part.
Claim 13
Dependent Claim
70 words
Apparatus for moulding a fixation part with a sealing body 2, comprising at least a first mould part 5, a second mould part 6 and a third mould part 7, together bounding a first moulding space (8, 8a) in which a fourth mould part (10) forms a second moulding space (11) beside the first moulding space (8, 8a) by replacing the first mould part (5) with said fourth mould part.
References Cited (Backward Citations)
No citation records indexed.
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