US4040222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cavity wall and method using adjustable spacing devices
Assignee: CIVIC AND CIVIC Pty Ltd
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Filing: 1976-05-18
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Granted: 1977-08-09
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Expires: 1996-05-18
Abstract
Abstract A wall having an outer structural component of masonry units which are provided with dovetail slots in their inner faces. A fixing device is provided which has a tongue at one end of a screw threaded rod and an adjustable cap at the other. The tongue is inserted and fixed into the dovetail slot and the cap adjusted by screwing on the rod. Caps of the various fixing devices are aligned in a vertical plane and an inner skin of plaster board or the like secured by screwing to the aligned caps. Transfer of moisture from the porous masonry wall to the inner skin is prevented by providing sufficient screw threading on the rod to allow a number of turns of the thread to remain exposed when the cap is screwed to its innermost position.
Inventors
- 👤 Alan Sidney Cull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:28
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0801; E04F13/0832; E04F13/0853
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
299 words
A method of constructing a cavity wall which includes a load-bearing masonry wall and a skin spaced from and defining a gap with said masonry wall, said method comprising the steps of: a. erecting said masonry wall from masonry units provided with slots, said slots facing the site of said skin; b. rigidly securing spacing devices in said slots, each of said spacing devices comprising a threaded rod, an elastically deformable tongue on one end of the respective rod, and a cap in the region of the other end of the respective rod in threaded engagement therewith so as to be movable axially of the respective rod upon relative rotation of the respective cap and rod, said tongues being receivable in said slots and being dimensioned such that rotation of said tongues in said slots causes compression of said tongues and a resultant rigid connection between said masonry wall and said spacing devices, and said spacing devices being secured in said slots by inserting said tongues in the respective slots and thereafter rotating said tongues in said slots to compress said tongues, said caps having fixing surfaces for alignment of said skin, and said rods being constructed such that a threaded portion of each rod remains exposed in the region of said masonry wall when said fixing surfaces are aligned in a predetermined plane subsequent to securing said spacing devices in said slots whereby moisture which penetrates said masonry wall and flows along said rods is caused to drip into said gap between said masonry wall and said skin; c. aligning said fixing surfaces in said predetermined plane subsequent to securing said spacing devices in said slots by rotating at least some of said caps relative to the respective rods; and d. connecting said skin with said fixing surfaces.
Claim 2
Independent Claim
299 words
A method of constructing a cavity wall which includes a load-bearing masonry wall and a skin spaced from and defining a gap with said masonry wall, said method comprising the steps of: a. erecting said masonry wall from masonry units provided with slots, said slots facing the site of said skin; b. rigidly securing spacing devices in said slots, each of said spacing devices comprising a threaded rod, an elastically deformable tongue on one end of the respective rod, and a cap in the region of the other end of the respective rod in threaded engagement therewith so as to be movable axially of the respective rod upon relative rotation of the respective cap and rod, said tongues being receivable in said slots and being dimensioned such that rotation of said tongues in said slots causes compression of said tongues and a resultant rigid connection between said masonry wall and said spacing devices, and said spacing devices being secured in said slots by inserting said tongues in the respective slots and thereafter rotating said tongues in said slots to compress said tongues, said caps having fixing surfaces for alignment of said skin, and said rods being constructed such that a threaded portion of each rod remains exposed in the region of said masonry wall when said fixing surfaces are aligned in a predetermined plane subsequent to securing said spacing devices in said slots whereby moisture which penetrates said masonry wall and flows along said rods is caused to drip into said gap between said masonry wall and said skin; c. aligning said fixing surfaces in said predetermined plane subsequent to securing said spacing devices in said slots by rotating at least some of said caps relative to the respective rods; and d. connecting said skin with said fixing surfaces.
Claim 3
Dependent Claim
12 words
A method as defined in claim 1 wherein said tongues comprise plastic.
Claim 4
Dependent Claim
13 words
A method as defined in claim 1 wherein said slots are dovetail slots.
Claim 5
Dependent Claim
29 words
A method as defined in claim 1 wherein each of said spacing devices consists essentially of plastic and said skin is connected to said fixing surfaces by conventional techniques.
Claim 6
Dependent Claim
27 words
A method as defined in claim 1 further comprising the step of fixing linings to wall openings and junctions independently of the use of said spacing devices.
Claim 7
Dependent Claim
171 words
A cavity wall comprising: a. a load-bearing masonry wall which is subdivided into a plurality of masonry units provided with slots, said slots being located on one side of said masonry wall; b. a plurality of spacing devices rigidly held in said slots, each of said spacing devices comprising a threaded rod, an elastically deformable tongue on one end of the respective rod, and a cap in the region of the other end of the respective rod in threaded engagement therewith, said tongues being received in the respective slots under compression so as to be rigidly secured therein, and said caps having fixing surfaces which are spaced from said masonry wall and are aligned in a predetermined plane; and c. a skin connected with said fixing surfaces and defining a gap with said masonry wall, each of said rods having an exposed threaded portion in the region of said masonry wall so that moisture which penetrates said masonry wall and flows along said rods is caused to drip into said gap.
Claim 8
Dependent Claim
171 words
A cavity wall comprising: a. a load-bearing masonry wall which is subdivided into a plurality of masonry units provided with slots, said slots being located on one side of said masonry wall; b. a plurality of spacing devices rigidly held in said slots, each of said spacing devices comprising a threaded rod, an elastically deformable tongue on one end of the respective rod, and a cap in the region of the other end of the respective rod in threaded engagement therewith, said tongues being received in the respective slots under compression so as to be rigidly secured therein, and said caps having fixing surfaces which are spaced from said masonry wall and are aligned in a predetermined plane; and c. a skin connected with said fixing surfaces and defining a gap with said masonry wall, each of said rods having an exposed threaded portion in the region of said masonry wall so that moisture which penetrates said masonry wall and flows along said rods is caused to drip into said gap.
Claim 9
Dependent Claim
12 words
A wall as defined in claim 6 wherein said tongues comprise plastic.
Claim 10
Dependent Claim
13 words
A wall as defined in claim 6 wherein said slots are dovetail slots.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |