Patent US3781973A successfully refreshed from Google Patents.
US3781973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of wall construction
Assignee: Cyprus Amax Minerals Co
•
Filing: 1971-10-26
•
Granted: 1974-01-01
•
Expires: 1991-10-26
Abstract
Abstract There is provided an improved wall construction including a vertical mullion and a horizontal member. The horizontal member is provided with longitudinally extending screw splines. The members may be assembled in the known shear block method, or in a known screw spline system, or further in accordance with the present invention the members may be assembled in accordance with an improved shear pin system. The shear pin system employs a shear pin which joins the horizontal members to the vertical mullions. The vertical mullion is prepared for the attachment of a horizontal member by forming holes to receive the head of a shear pin, and the horizontal member is prepared by the insertion of the shear pins into screw splines formed in the horizontal member. The horizontal member is then installed on the vertical by installing the head of the shear pin into the hole previously drilled in the vertical mullion, and then tapping the horizontal downward until the shear pins bottom in the holes.
Inventors
- 👤 S Hubbard
- 👤 L Biebuyck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:53
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/76; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49947; Y10T29/49963
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
133 words
A method of assembling horizontal members with vertical mullions comprising the steps of assembling fasteners of the type having a spacer bearing portion and an enlarged head portion with the horizontal members with the spacer bearing portion butting against the end of the horizontal member and projecting from the end thereof, preparing the vertical members by forming circular holes in the side walls thereof for receiving the heads of the fasteners, inserting the heads of the fasteners in the holes with the enlarged head portion thereof projected through the side wall of the vertical mullion, and seating the fasteners with the spacer bearing portions thereof seated against the lower surfaces of the circular holes of the vertical mullions and the enlarged head portion restrained by the inner wall surface of the vertical member.
Claim 2
Independent Claim
133 words
A method of assembling horizontal members with vertical mullions comprising the steps of assembling fasteners of the type having a spacer bearing portion and an enlarged head portion with the horizontal members with the spacer bearing portion butting against the end of the horizontal member and projecting from the end thereof, preparing the vertical members by forming circular holes in the side walls thereof for receiving the heads of the fasteners, inserting the heads of the fasteners in the holes with the enlarged head portion thereof projected through the side wall of the vertical mullion, and seating the fasteners with the spacer bearing portions thereof seated against the lower surfaces of the circular holes of the vertical mullions and the enlarged head portion restrained by the inner wall surface of the vertical member.
Claim 3
Dependent Claim
97 words
The method of assembling members as set forth in claim 1 above wherein the spacer bearing portion of said fasteners is defined by an arcuate bearing section eccentric with the shank, and further including the step of spacing the head thereof from the end of the horizontal member, and wherein the circular holes formed in the vertical mullions for receiving the heads of the fasteners are formed with a radius of the arcuate bearing section of the fasteners, whereby said bearing surface eccentrically seats relative to said holes and prevents loosening of said fasteners after seating thereof.
Claim 4
Dependent Claim
92 words
The method of assembling members as set forth in claim 1 above wherein the head portion of said fastener includes a seating surface facing toward the end of the horizontal member and tapering outwardly from the shank of the fasteners, and wherein the seating step includes tapping the horizontal member downwardly to effect wedge action by the tapering outward surface while simultaneously seating the spacer bearing portion on the side wall of the mullion hole and thereby drawing the end of the horizontal member tightly against the wall of the vertical mullion.
Claim 5
Dependent Claim
20 words
The method of assembling members as set forth in claim 1 wherein said forming step consists of drilling the holes.
References Cited (Backward Citations)
US858897A
Cited
US1374633A
Cited
US1667913A
Cited
US1583218A
Cited
US1987474A
Cited
US2447704A
Cited
US3383820A
Cited
US3394518A
Cited
US3439812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |