DE8916033U1 - - Google Patents
Info
- Publication number
- DE8916033U1 DE8916033U1 DE8916033U DE8916033U DE8916033U1 DE 8916033 U1 DE8916033 U1 DE 8916033U1 DE 8916033 U DE8916033 U DE 8916033U DE 8916033 U DE8916033 U DE 8916033U DE 8916033 U1 DE8916033 U1 DE 8916033U1
- Authority
- DE
- Germany
- 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.)
- Expired - Lifetime
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
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/81455—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps being a fluid inflatable bag or bladder, a diaphragm or a vacuum bag for applying isostatic pressure
-
- 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
- B29C66/116—Single bevelled joints, i.e. one of the parts to be joined being bevelled in the joint area
-
- 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
- B29C66/12—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
- B29C66/1226—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 one bevelled 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
-
- 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
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5224—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces
-
- 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
- B29C66/5324—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length
- B29C66/53241—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially annular, i.e. of finite length said articles being tubular and said substantially annular single elements being of finite length relative to the infinite length of said 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
- B29C66/61—Joining from or joining on the inside
-
- 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
- B29C66/612—Making circumferential 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
- B29C66/50—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
- B29C66/63—Internally supporting the article during joining
- B29C66/634—Internally supporting the article during joining using an inflatable core
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/179—Devices for covering leaks in pipes or hoses, e.g. hose-menders specially adapted for bends, branch units, branching pipes or the like
-
- 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
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- 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
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
- E03F2003/065—Refurbishing of sewer pipes, e.g. by coating, lining
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3929558A DE3929558A1 (en) | 1989-09-06 | 1989-09-06 | Sealing joint between mains drain and house connection - involves resin-impregnated insert, placed into house pipe without excavation of ground |
Publications (1)
Publication Number | Publication Date |
---|---|
DE8916033U1 true DE8916033U1 (en) | 1993-01-07 |
Family
ID=6388714
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3929558A Ceased DE3929558A1 (en) | 1989-09-06 | 1989-09-06 | Sealing joint between mains drain and house connection - involves resin-impregnated insert, placed into house pipe without excavation of ground |
DE8916033U Expired - Lifetime DE8916033U1 (en) | 1989-09-06 | 1989-09-06 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3929558A Ceased DE3929558A1 (en) | 1989-09-06 | 1989-09-06 | Sealing joint between mains drain and house connection - involves resin-impregnated insert, placed into house pipe without excavation of ground |
Country Status (1)
Country | Link |
---|---|
DE (2) | DE3929558A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4229829A1 (en) * | 1992-09-07 | 1994-03-10 | Friedrichsfeld Ag | Sealing of branch pipe into side of large-dia. concrete pipe - involves reinforcing plates anchored in grout inside main pipe and liner pipe sealed into branch pipe |
DE19504139A1 (en) * | 1995-02-09 | 1996-08-14 | Preussag Rohrsanierung Gmbh | Polyethylene water pipe connection seal |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1004993A6 (en) * | 1991-05-31 | 1993-03-16 | Le Joint Interne Construction | PROCESS FOR SEALING INSIDE THE JUNCTIONS BETWEEN MAIN PIPES AND SIDE CONNECTIONS. |
DE4238982C2 (en) * | 1992-11-19 | 1997-03-13 | Kmg Kanal Mueller Gruppe Inter | Lining hose for the renovation of underground sewers, pipes or the like. |
GB9225528D0 (en) * | 1992-12-07 | 1993-01-27 | Insituform Group Ltd | Improvements relating to the lining of pipelines and passageways |
GB9319832D0 (en) * | 1993-09-25 | 1993-11-10 | Insituform Technologies Inc | Improvements relating to the lining of pipelines and passageways |
AT403391B (en) * | 1994-03-01 | 1998-01-26 | Klug Kanal Leitungs Und Umwelt | METHOD FOR THE PRODUCTION OF SEALANT JOINTS OF HOUSE CONNECTION PIPES AND SIMILAR INFLOW PIPES IN WASTEWATER CHANNELS |
US5950682A (en) * | 1994-08-19 | 1999-09-14 | Lmk Enterprises, Inc. | Apparatus and method for repairing the junction of a sewer main line and lateral |
DE19508188A1 (en) * | 1995-03-09 | 1996-09-12 | Trolining Gmbh | Hat-shaped connection sleeve for house connections in sewer pipes |
GB9507003D0 (en) * | 1995-04-05 | 1995-05-31 | Rice Nigel | Sewer re-lining |
AT402550B (en) * | 1995-04-07 | 1997-06-25 | Kuebel Johann | METHOD AND DEVICE FOR REFURBISHING THE LEAKING WALLS OF PIPES |
US5622591A (en) * | 1995-05-15 | 1997-04-22 | Eastman Kodak Company | Method for thermally attaching an element to a mounting surface |
DE19717746C2 (en) * | 1996-05-05 | 1998-12-10 | Jens Dipl Ing Bauer | Device for the rehabilitation of a side inlet or the like opening into a waste water collector |
DE19640697C2 (en) * | 1996-10-02 | 1999-02-25 | Willi Schwalm | Device for transporting and manipulating a tool in a sewer network |
DE19640698A1 (en) * | 1996-10-02 | 1998-04-16 | Willi Schwalm | Seal for repairing drain water pipe |
DE19719969C2 (en) * | 1997-05-13 | 2002-06-27 | Helmar Haas | Method and device for renovating house connection areas on sewer pipes or sewers |
US6068725A (en) * | 1997-11-26 | 2000-05-30 | Insituform (Netherlands) B.V. | Method of installation of a flexible cured in place lateral seal in an existing main pipeline |
US6029726A (en) * | 1997-11-26 | 2000-02-29 | Insituform (Netherlands) B.V. | Apparatus for installing a flexible cured in place lateral seal in an existing main pipeline |
US5915419A (en) * | 1997-11-26 | 1999-06-29 | Insituform (Netherlands) B.V. | Cured in place lateral seal for relining of pipelines and method of manufacture |
DE19837295B4 (en) * | 1998-08-18 | 2006-05-24 | Helmar Haas | Duct sealing |
US7135087B2 (en) * | 2001-02-02 | 2006-11-14 | Verline Inc. | Apparatus and method for the repair and stabilization of underground pipes |
DE102005019449A1 (en) * | 2005-04-25 | 2006-10-26 | Bodenbender Gmbh | Molded part for lining a transitional area between a waste water/sewage channel pipe and a house service connection pipe has a hose-shaped section and a collar-shaped section |
FI123175B (en) * | 2011-11-10 | 2012-12-14 | Picote Oy Ltd | Apparatus, arrangement, and method for installing a renovation stocking in a floor drain |
NL2008555C2 (en) * | 2012-03-28 | 2013-10-01 | Wim De Mol Riool En Afvoerontstoppingen V O F | METHOD AND STOCKING FOR RENOVATING A TOP OF A HEADER. |
GB2503249B (en) * | 2012-06-20 | 2014-07-23 | Source One Environmental Ltd | Repair of pipes and pipelines |
EP2711598B1 (en) * | 2012-09-19 | 2015-09-09 | Saertex multicom GmbH | Multiple top profile for channel renovation |
CN116447429B (en) * | 2023-06-20 | 2023-08-25 | 菏泽嘉泽电子材料有限公司 | Drainage device for rush repair of gas pipeline and use method |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU4541179A (en) * | 1978-04-05 | 1979-10-18 | Daniel Cahuzac | Sheath for forming and internal lining for a conduit |
AT375120B (en) * | 1982-11-12 | 1984-07-10 | Tiroler Roehren & Metallwerk | DEVICE FOR CONNECTING A BRANCH PIPE TO A CHANNEL PIPE |
DE3513956A1 (en) * | 1985-04-18 | 1986-10-30 | Müller, Hans, 4938 Schieder-Schwalenberg | Method of renewing a buried pipeline |
DE3618963A1 (en) * | 1986-06-05 | 1987-12-10 | Adolf Prof Dipl Ing Voss | Process and apparatus for connecting a sewage pipe to a service pipe or the like which opens transversely therein |
DE3732694C2 (en) * | 1987-09-29 | 1994-02-24 | Roland Herr | Process for lining channels |
DE3810437A1 (en) * | 1988-03-26 | 1989-10-12 | Hemscheidt Maschf Hermann | METHOD FOR CONNECTING THE INLINER OF A CHANNEL PIPELINE TO THE INLET PIPES |
DE3920191A1 (en) * | 1989-06-21 | 1991-01-10 | Teerbau Gmbh Strassenbau | METHOD AND DEVICE FOR SEALING A WASTE WATER CHANNEL IN THE AREA OF SIDE CONNECTIONS |
-
1989
- 1989-09-06 DE DE3929558A patent/DE3929558A1/en not_active Ceased
- 1989-09-06 DE DE8916033U patent/DE8916033U1/de not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4229829A1 (en) * | 1992-09-07 | 1994-03-10 | Friedrichsfeld Ag | Sealing of branch pipe into side of large-dia. concrete pipe - involves reinforcing plates anchored in grout inside main pipe and liner pipe sealed into branch pipe |
DE19504139A1 (en) * | 1995-02-09 | 1996-08-14 | Preussag Rohrsanierung Gmbh | Polyethylene water pipe connection seal |
DE19504139C2 (en) * | 1995-02-09 | 1997-09-18 | Preussag Rohrsanierung Gmbh | Process for sealing the transition between a connection line and PE pipes and connection seal |
Also Published As
Publication number | Publication date |
---|---|
DE3929558A1 (en) | 1991-03-07 |