FR2493216A1 - Rubber seals for joints near ultrasonic welded joints - avoids interaction between successive joints on a common component - Google Patents
Rubber seals for joints near ultrasonic welded joints - avoids interaction between successive joints on a common component Download PDFInfo
- Publication number
- FR2493216A1 FR2493216A1 FR8023441A FR8023441A FR2493216A1 FR 2493216 A1 FR2493216 A1 FR 2493216A1 FR 8023441 A FR8023441 A FR 8023441A FR 8023441 A FR8023441 A FR 8023441A FR 2493216 A1 FR2493216 A1 FR 2493216A1
- Authority
- FR
- France
- Prior art keywords
- joints
- joint
- wall
- parts
- seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/114—Single butt joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
- B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
- B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
- B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
- B29C66/543—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/55—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles sealing elements being incorporated into the joints, e.g. gaskets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/61—Joining from or joining on the inside
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
- F02B27/008—Resonance charging
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
La présente invention concerne un assemblage comprenant au moins deux pièces soudées l'une sur l'autre et un élément rapporté, solidaire de l'une des pièces et s'étendant à joint étanche à travers une ouverture délimitée au moins en partie par l'autre pièce. Un résonateur acoustique peut etre agencé de cette façon, les deux pièces étant assemblées pour délimiter un volume de résonance, tandis que l'élément rapporté est constitué par un conduit coudé fixé sur l'une des pièces et s'étendant à travers une ouverture. ménagée ge moins en partie dans la deuxième pièce, ce conduit comportant une perforation qui le met en communication avec l'intérieur du volume précité. The present invention relates to an assembly comprising at least two parts welded to one another and an insert, integral with one of the parts and extending to a leaktight seal through an opening delimited at least in part by the other room. An acoustic resonator can be arranged in this way, the two parts being assembled to delimit a resonant volume, while the added element is constituted by a bent conduit fixed on one of the parts and extending through an opening. formed less in part in the second part, this conduit comprising a perforation which places it in communication with the interior of the abovementioned volume.
On connaft par ailleurs un procédé permettant de réaliser le soudage de deux pièces en matière plastique, en provoquant la mise en vibration de l'une des pièces par rapport à l'autre, tandis que les deux pièces sont fortement pressées l'une sur l'autre. Un tel procédé est simple à mettre en oeuvre, économique et se prête particulièrement bien à une fabrication industrielle en grande série. Il serait donc souhaitable de pouvoir l'utiliser pour réaliser l'assemblage défini ci-dessus, mais ceci n'a pu autre réalisé car compte-tenu de la mise en vibration de la deuxième pièce par rapport à la première et par rapport à l'élément solidaire de cette première pièce, on ne peut obtenir une étanchéité satisfaisante entre ledit élément et la paroi qu'il traverse. We also know a method for welding two plastic parts, causing the vibration of one of the parts relative to the other, while the two parts are strongly pressed one on the 'other. Such a process is simple to implement, economical and lends itself particularly well to industrial mass production. It would therefore be desirable to be able to use it to carry out the assembly defined above, but this could not have been achieved otherwise since taking into account the vibration of the second part with respect to the first and with respect to the 'element integral with this first part, it is not possible to obtain a satisfactory seal between said element and the wall through which it passes.
L'invention se propose d'apporter une solution à ce
problème.The invention proposes to provide a solution to this
problem.
Elle a pour objet un assemblage comprenant au moins
deux pièces soudées l'une sur l'autre et un élément solidaire de
l'une des pièces et qui s'étend à joint étanche à travers une ouver
ture délimitée au moins en partie par l'autre pièce, caractérisé en
ce qu'il est prévu entre ledit élément et la paroi délimitant ladite
ouverture, un joint d'étanchéité en élastomère, monté serré sur
ledit élément, ce joint ayant en section transversale la forme d'un
U dont les deux branches sont orientées vers l'extérieur et sont
disposées à cheval sur ladite paroi. Its purpose is an assembly comprising at least
two pieces welded to each other and an element integral with
one of the pieces and which extends to seal through an open
ture bounded at least in part by the other part, characterized by
what is provided between said element and the wall defining said
opening, an elastomer seal, mounted tight on
said element, this joint having in cross section the shape of a
U whose two branches are oriented outwards and are
arranged astride said wall.
L'invention a également pour objet un procédé de fabrication d'un tel assemblage, caractérisé en ce quton monte le joint sur l'élément rapporté, on fixe ledit élément rapporté sur la première pièce, tout en plaçant le joint à cheval sur la paroi adjacente de la première pièce, on place la deuxième pièce sur la première en insérant la paroi de cette deuxième pièce dans le joint, et l'on réalise par vibration la soudure entre les deux pièces. The invention also relates to a method of manufacturing such an assembly, characterized in that the seal is mounted on the insert, the said insert is fixed on the first part, while placing the seal astride the wall adjacent to the first part, the second part is placed on the first by inserting the wall of this second part in the joint, and the welding between the two parts is carried out by vibration.
L'invention va être décrite plus en détail ci-dessous en se référant au dessin annexé donné à titre d'exemple et dont
- La Fig. 1 est une vue en coupe d'un résonateur as semblé suivant ltinsrention,
- La Fig. 2 est une viie en coupe suivant la ligne 2 -2 de la Fig. 1.The invention will be described in more detail below with reference to the accompanying drawing given by way of example and of which
- Fig. 1 is a sectional view of a resonator as appeared according to the invention,
- Fig. 2 is a sectional viie along line 2 -2 of FIG. 1.
Ce résonateur comprend deux coquilles 1 et 2, en matière plastique, soudées ensemble par vibration, le long de deux rebords 3a, 3b, pour former un volume fermé. This resonator comprises two shells 1 and 2, made of plastic, welded together by vibration, along two flanges 3a, 3b, to form a closed volume.
Un conduit coudé 4 s'étend à travers une ouverture 5 délimitée en partie dans une paroi 6 de la coquille 1 et en partie dans une paroi 7 de la coquille 2. Les rebords 3a, 3b sont interrompus sur une courte distance de part et d'autre de l'ouverture 5. Le conduit 4 se #termine en 8 sur le fond de la coquille 1 sur laquelle il est fixé, par exemple par soudure aux ultra-sons. Le conduit 4 comporte une perforation 9 qui le met en communication avec l'intérieur du volume fermé délimité par les deux coquilles. A bent pipe 4 extends through an opening 5 delimited partly in a wall 6 of the shell 1 and partly in a wall 7 of the shell 2. The flanges 3a, 3b are interrupted for a short distance from both 'other of the opening 5. The conduit 4 ends # 8 at the bottom of the shell 1 on which it is fixed, for example by ultrasonic welding. The conduit 4 has a perforation 9 which places it in communication with the interior of the closed volume delimited by the two shells.
Au droit de l'ouverture 5, un joint 10 en élastomère est monté serré autour du conduit 4, Ce joint présente une section en U dont les deux branches, orientées vers l'extérieur, sont disposées à cheval sur les parois 6,7 des coquilles 1 et 2. In line with the opening 5, an elastomeric seal 10 is mounted tightly around the conduit 4. This seal has a U-shaped section, the two branches of which, facing outward, are arranged astride the walls 6.7 of the shells 1 and 2.
Les opérations d'assemblage se font dans l'ordre sui vant:
Le conduit 4, sur lequel est monté le joint 10, est soudé en 8 sur la coquille 1, le joint étant placé à cheval sur la paroi 6 de cette coquille. La coquille 2 est alors positionnée sur la coquille 1, sa paroi 7 venant s'insérer dans l'autre partie du joint 10. Les dimensions du joint sont telles que la mise en place des deux coquilles provoque un serrage radial et longitudinal. On réalise enfin la soudure, par vibration, des coquilles 1 et 2. Cette opération est rendue possible du fait que le joint 10 en élastomère autorise la mise en vibration d'une coquille par rapport à l'autre, tout en assurant une étanchéité parfaite après assemblage. The assembly operations are carried out in the following order:
The duct 4, on which the seal 10 is mounted, is welded at 8 to the shell 1, the seal being placed astride the wall 6 of this shell. The shell 2 is then positioned on the shell 1, its wall 7 being inserted into the other part of the seal 10. The dimensions of the seal are such that the positioning of the two shells causes radial and longitudinal tightening. Finally, the shells 1 and 2 are welded by vibration. This operation is made possible by the fact that the elastomer seal 10 allows one shell to vibrate relative to the other, while ensuring perfect sealing. after assembly.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8023441A FR2493216A1 (en) | 1980-11-03 | 1980-11-03 | Rubber seals for joints near ultrasonic welded joints - avoids interaction between successive joints on a common component |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8023441A FR2493216A1 (en) | 1980-11-03 | 1980-11-03 | Rubber seals for joints near ultrasonic welded joints - avoids interaction between successive joints on a common component |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2493216A1 true FR2493216A1 (en) | 1982-05-07 |
FR2493216B1 FR2493216B1 (en) | 1983-04-15 |
Family
ID=9247606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8023441A Granted FR2493216A1 (en) | 1980-11-03 | 1980-11-03 | Rubber seals for joints near ultrasonic welded joints - avoids interaction between successive joints on a common component |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2493216A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2725935A1 (en) * | 1994-10-21 | 1996-04-26 | Mann & Hummel Filter | METHOD FOR PRODUCING HOLLOW SPACE STRUCTURE IN PLASTIC MATERIAL AND STRUCTURES PRODUCED THEREBY |
FR2754854A1 (en) * | 1996-10-17 | 1998-04-24 | Le Profil Ind | Inlet manifold for in-line or V-type internal combustion engine |
EP1166999A1 (en) * | 2000-06-21 | 2002-01-02 | Ask Industries S.p.A. | Process for the automatic and centered assembly of molded parts to be coupled |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1417778A (en) * | 1973-04-07 | 1975-12-17 | Hepworth Plastics Ltd | Inspection chambers manholes or like vessels |
-
1980
- 1980-11-03 FR FR8023441A patent/FR2493216A1/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1417778A (en) * | 1973-04-07 | 1975-12-17 | Hepworth Plastics Ltd | Inspection chambers manholes or like vessels |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2725935A1 (en) * | 1994-10-21 | 1996-04-26 | Mann & Hummel Filter | METHOD FOR PRODUCING HOLLOW SPACE STRUCTURE IN PLASTIC MATERIAL AND STRUCTURES PRODUCED THEREBY |
FR2754854A1 (en) * | 1996-10-17 | 1998-04-24 | Le Profil Ind | Inlet manifold for in-line or V-type internal combustion engine |
EP1166999A1 (en) * | 2000-06-21 | 2002-01-02 | Ask Industries S.p.A. | Process for the automatic and centered assembly of molded parts to be coupled |
Also Published As
Publication number | Publication date |
---|---|
FR2493216B1 (en) | 1983-04-15 |
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