Patent US4655638A successfully refreshed from Google Patents.
US4655638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterstop for monolith joints and method
Assignee: Insituform Netherlands BV
•
Filing: 1986-06-12
•
Granted: 1987-04-07
•
Expires: 2006-06-12
Abstract
Abstract A tubular member is arranged to be inserted in a hole drilled in adjacent monoliths astraddle a joint between the monoliths. The tubular member comprises an outer layer of material saturated with a resin capable of bonding to defining walls of the hole. An inner layer of fluid impermeable material is bonded to the outer layer of the tubular member. When installed in a drilled hole, the tube is placed with the resin saturated layer against and in bonding relation with the wall of the hole. A core portion may be placed in the tube to hold it in tight bonded engagement with the hole, such core portion comprising a flexible filler such as grout having an elasticity which when cured flexes with differential movements of adjacent monoliths. The tubular member has two or more barriers therein which prevent the saturating resin from washing away during installation.
Inventors
- 👤 Stephen T. Waring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:00
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/16
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
86 words
A waterstop for sealing a vertical joint between monoliths comprising an elongated tubular member arranged to be inserted in a hole provided in adjacent monoliths astraddle a joint therebetween, said tubular member comprising an outer layer of material saturated with a resin capable of bonding to defining walls in the hole, an inner layer of fluid impermeable material bonded to said outer layer, and one or more longitudinal barriers of water impermeable material preventing head water from washing said resin out of the joint during installation.
Claim 2
Dependent Claim
86 words
A waterstop for sealing a vertical joint between monoliths comprising an elongated tubular member arranged to be inserted in a hole provided in adjacent monoliths astraddle a joint therebetween, said tubular member comprising an outer layer of material saturated with a resin capable of bonding to defining walls in the hole, an inner layer of fluid impermeable material bonded to said outer layer, and one or more longitudinal barriers of water impermeable material preventing head water from washing said resin out of the joint during installation.
Claim 3
Dependent Claim
20 words
The waterstop of claim 1 wherein said longitudinal barrier is flexible to allow inversion of said tube into a hole.
Claim 4
Dependent Claim
34 words
The waterstop of claim 1 including a pair of said barriers, said barriers being located approximately in diametric relation in said tubular member and arranged to be disposed in spaced relation from the joint.
Claim 5
Dependent Claim
39 words
The waterstop of claim 1 including a flexible core portion filling the interior of said tube to maintain the tubular member in tight bonded engagement with the defining walls of the hole against head pressure acting on the monoliths.
Claim 6
Independent Claim
106 words
The method of forming a waterstop in a vertical hole cut in adjacent monoliths astraddle a joint therebetween comprising the steps of lining the hole with a tubular member having a first layer saturated with a water reactive resin for bonding to defining walls of the hole and a second layer of fluid impermeable material bonded to said first layer, said tubular member having one or more longitudinal barriers of water impermeable material preventing head water from washing said resin out of the joint during installation, and positioning said tubular member in the hole such that said barriers are disposed in spaced relation from the joint.
Claim 7
Independent Claim
106 words
The method of forming a waterstop in a vertical hole cut in adjacent monoliths astraddle a joint therebetween comprising the steps of lining the hole with a tubular member having a first layer saturated with a water reactive resin for bonding to defining walls of the hole and a second layer of fluid impermeable material bonded to said first layer, said tubular member having one or more longitudinal barriers of water impermeable material preventing head water from washing said resin out of the joint during installation, and positioning said tubular member in the hole such that said barriers are disposed in spaced relation from the joint.
References Cited (Backward Citations)
US2277286A
Cited
US2333826A
Cited
US2794758A
Cited
DE1079091B
Cited
US4009063A
Cited
US4064211A
Cited
US4135958A
Cited
US4202531A
Cited
US4456401A
Cited
US4602974A
Cited
US4581085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |