Patent US3900541A successfully refreshed from Google Patents.
US3900541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of restoring a wooden beam
Assignee: Bouweconomisch En Technologisch Adviesbureau BV
•
Filing: 1973-06-18
•
Granted: 1975-08-19
•
Expires: 1993-06-18
Abstract
Abstract A wooden beam having an affected end supported in a wall is restored inserting a reinforcement taking up shearing forces with clearance through at least one hole made in the wood, and injecting a hardening synthetic resin grout into the affected region for replacing destroyed wood portions and saturating and completely penetrating decayed wood, said grout comprising a synthetic resin having strongly cementitious properties, such as an epoxy resin, and filling up the hole for the reinforcement with said grout so that said grout with the reinforcement embedded therein completely fills the hole.
Inventors
- 👤 Dick Klapwijk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:13
CPC Classifications
E; E04; E04G; E04G23/00; E04G23/02; E04G23/0218; E04G2023/0248; E04G2023/0251; Y; Y10; Y10S; Y10S425/00; Y10S425/036
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
149 words
A METHOD OF RESORING AN END PORTION OF A WOODEN BEAM FORMING A PART OF A BUILDING STRUCTURE WHEREIN THE BEAM INCLUDES A SOLID PORTION AND AN END PORTION AT LEAST INITIALLY IN STRUCTURAL ENGAGEMENT WITH A COOPERATING PART OF THE BUILDING 0STRUCTURE, AND WHEREIN AT LEAST A PART OF SAID END PORTION SHALL DISAPPEARED THROUGH DECAY AND THE LIKE AND THERE IS A CONFINED HALLOW SPACE BETWEEN SAID SOLID PORTION AND THE COOPERATING PART OF THE BUILDING STRUCTURE IN PLACE OF THE PART OF THE END PORTION, SAID METHOD COMPRISING THE STEPS OF BORING A HOLE IN THE SOLID PORTION OF THE BEAM AND IN COMMUNICATION WITH THE HOLLOW SPACE, SAID HOLE BEING ELONAGATED AS COMPARED TO THE TRANSVERSE DIMENSION THEREOF, PLACING A UNITARY MASS OF SYNTHETIC RESIN GROUT OF THE TYPE HAVING HIGHLY CEMENTITIOUS PROPERTIES SUCH AS EPOXY RESIN IN THE HOLLOW SPACE AND INTO THE HOLE
Claim 2
Independent Claim
149 words
A METHOD OF RESORING AN END PORTION OF A WOODEN BEAM FORMING A PART OF A BUILDING STRUCTURE WHEREIN THE BEAM INCLUDES A SOLID PORTION AND AN END PORTION AT LEAST INITIALLY IN STRUCTURAL ENGAGEMENT WITH A COOPERATING PART OF THE BUILDING 0STRUCTURE, AND WHEREIN AT LEAST A PART OF SAID END PORTION SHALL DISAPPEARED THROUGH DECAY AND THE LIKE AND THERE IS A CONFINED HALLOW SPACE BETWEEN SAID SOLID PORTION AND THE COOPERATING PART OF THE BUILDING STRUCTURE IN PLACE OF THE PART OF THE END PORTION, SAID METHOD COMPRISING THE STEPS OF BORING A HOLE IN THE SOLID PORTION OF THE BEAM AND IN COMMUNICATION WITH THE HOLLOW SPACE, SAID HOLE BEING ELONAGATED AS COMPARED TO THE TRANSVERSE DIMENSION THEREOF, PLACING A UNITARY MASS OF SYNTHETIC RESIN GROUT OF THE TYPE HAVING HIGHLY CEMENTITIOUS PROPERTIES SUCH AS EPOXY RESIN IN THE HOLLOW SPACE AND INTO THE HOLE
Claim 3
Dependent Claim
37 words
The method of claim 5 wherein the hole is bored into the beam initiating at a point remote from the hollow space, and the synthetic resin grout and the reinforcement are inserted into place through the hole.
Claim 4
Dependent Claim
27 words
The method of claim 5 wherein the reinforcement includes a hollow tube, and the synthetic reinforcement is introduced into place at least partially through the hollow tube.
Claim 5
Dependent Claim
42 words
The method of claim 5 wherein the end portion of the beam is engaged with another portion of the building structure and the hole is drilled first through the another building structure portion into the hollow space and then into the beam.
References Cited (Backward Citations)
US3646720A
Cited
US3716608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |