US4244155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Block interlocking insert
Assignee: Individual
•
Filing: 1978-05-08
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Granted: 1981-01-13
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Expires: 1998-05-08
Abstract
Abstract A bent steel insert is provided with top and bottom pairs of abutments for engaging the inside surfaces of top and bottom rows of concrete blocks to center the rows on top of each other. The preferred embodiment is made of a single strip of steel by: bending it adjacent one end at approximately a 90° angle; by doubling it back upon itself to project to the opposite side of the original plane of the strip; and then bending it back again to the original plane to provide top and bottom abutments at one end. The opposite end of the strip is similarly bent to form abutments which are a mirror a image of those previously described to thereby provide pairs of top and bottom abutments for centering building blocks on top of each other.
Inventors
- 👤 Arthur R. Swiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:26
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/38; E04B1/41; E04B1/4178; E04B1/4185
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
226 words
In a block wall having upper and lower tiers of building block of the type having top and bottom surfaces with walls forming an internal core cavity of generally predetermined width extending therebetween, and with the cavities of the upper and lower tiers being aligned: a long, narrow strip of relatively stiff material having upper and lower surfaces, a width considerably less than that of said predetermined cavity width, and a length greater than said predetermined cavity width positioned between said tiers; said strip having a first upwardly extending U-shaped configuration followed by a first downwardly extending U-shaped configuration positioned longitudinally of each other and lengthwise of said strip, and a second downwardly extending U-shaped configuration and a second upwardly extending U-shaped configuration positioned longitudinally of each other and lengthwise of said strip; said first and second upwardly extendig U-shaped configurations being positioned against the respective opposing vertical core cavity wall surfaces of the upper tier and the first and second downwardly extending U-shaped configurations being positioned against the respective opposing vertical core cavity wall surfaces of the lower tier to key the two tiers together; said strip having end portions positioned between blocks of the upper and lower tiers to hold the blocks of the two tiers apart and provide a space therebetween; and a mortar joint material in said space between said keyed tiers.
Claim 2
Dependent Claim
226 words
In a block wall having upper and lower tiers of building block of the type having top and bottom surfaces with walls forming an internal core cavity of generally predetermined width extending therebetween, and with the cavities of the upper and lower tiers being aligned: a long, narrow strip of relatively stiff material having upper and lower surfaces, a width considerably less than that of said predetermined cavity width, and a length greater than said predetermined cavity width positioned between said tiers; said strip having a first upwardly extending U-shaped configuration followed by a first downwardly extending U-shaped configuration positioned longitudinally of each other and lengthwise of said strip, and a second downwardly extending U-shaped configuration and a second upwardly extending U-shaped configuration positioned longitudinally of each other and lengthwise of said strip; said first and second upwardly extendig U-shaped configurations being positioned against the respective opposing vertical core cavity wall surfaces of the upper tier and the first and second downwardly extending U-shaped configurations being positioned against the respective opposing vertical core cavity wall surfaces of the lower tier to key the two tiers together; said strip having end portions positioned between blocks of the upper and lower tiers to hold the blocks of the two tiers apart and provide a space therebetween; and a mortar joint material in said space between said keyed tiers.
Claim 3
Dependent Claim
35 words
The device of claim 1 wherein said upwardly extending U-shaped configurations are spaced apart by a distance greater than said downwardly extending U-shaped configurations to accommodate a taper in the cavity sidewalls of the block.
Claim 4
Dependent Claim
29 words
The device of claim 1 wherein the U-shaped configurations are constructed and arranged to resiliently abut the internal core cavity wall surfaces of blocks for which they are designed.
Claim 5
Dependent Claim
25 words
The device of claim 1 having portions extending outwardly of said abutments, said portions having flanges bent vertically to provide spacing between vertically aligned blocks.
Claim 6
Dependent Claim
26 words
The device of claim 4 wherein the portions which extend outwardly of the abutments have opposite side edges bent upwardly or downwardly to provide said flanges.
Claim 7
Dependent Claim
18 words
The device of claim 1 wherein the tips of the top and bottom U-shaped configurations are similarly spaced.
Claim 8
Dependent Claim
20 words
The block wall of claim 1 wherein the mortar joint material in the space between the keyed tiers is resilient.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-13 | 1984-07-14 | 1985-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-13 | 1988-07-14 | 1989-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-13 | 1992-07-14 | 1993-01-13 | $7700.00 | Window Closed / Lapsed |