Patent US2121791A successfully refreshed from Google Patents.
Patent US4884382A successfully refreshed from Google Patents.
US4884382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular building-block form
Assignee: AMERICAN CONFORM INDUSTRIES Inc
•
Filing: 1988-05-18
•
Granted: 1989-12-05
•
Expires: 2008-05-18
Abstract
Abstract A modular concrete-block form which is shaped in a rectangular configuraiton and has a pair of oppositely disposed side panel members and end enclosure panels to define a body cavity to receive poured concrete therein. The side panels are held in a fixed parallel relation to each other and are further prevented from side-to-side movement relative to each other by a plurality of strut members which are fixedly mounted transversley from one side panel to the other. The unique arrangement of the strut members contributes to a very stable block framework. Each strut member is formed with substantially "H"-shaped tenon members that are slidably engaged with spaced-apart, "T"-shaped slots formed in the inner surfaces of said side panels. The panel structure is firmly grasped within the pair of opposed stud members that define the tenons. The tenons are integrally connected together by means of truss members that further define passages therethrough for flow of wet concrete therebetween.
Inventors
- 👤 David D. Horobin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:08
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/84; E04B2/86; E04B2/8635; E04B2/8641; E04B2002/8676
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
314 words
An improved, modular, concrete block form assembly wherein the assembly is formed in combination with strut members, said combination comprising: a pair of oppositely disposed side panel members each having an inner and outer surface and vertically disposed interlocking end members; interlocking means formed along the upper and lower longitudinal edges of said panels, said interlocking means being formed so that said upper and lower edges are interlocked with each other when said assemblies are stacked one on top of the other; a plurality of equally spaced tongue-and-groove members vertically formed in said inner surface of said panels; a plurality of T-shaped mortises spaced apart from each other and vertically located in said side panels, said T-shaped mortises being defined by transverse slots formed in vertical tongue members and longitudinally disposed head slots, said mortises extending to a midway point of each of said side panels; a strut members having a web midsection and an H-shaped tenon member formed at each of the securing ends of said web midsection so as to be received in said respective mortises, said midsection of said strut member being formed having a plurality of truss members that define a plurality of flow-through openings formed therein to provide for an unobstructed flow of concrete therebetween; said H-shaped tenon members being integrally formed with said truss members, and each tenon member including an outer stud member and an inner stud member integrally connected by a web frame member, wherein said outer stud member of each of said tenons is formed having a wedge-shaped configuration so as to be forcibly positioned in said head slot to provide a locking arrangement therewith, said inner stud being positioned against said inner surface of said side panels, thereby preventing movement relative thereto, and wherein said web frame member thereof is located within said transverse slot whereby longitudinal movement between said opposed panels is prevented.
Claim 2
Dependent Claim
314 words
An improved, modular, concrete block form assembly wherein the assembly is formed in combination with strut members, said combination comprising: a pair of oppositely disposed side panel members each having an inner and outer surface and vertically disposed interlocking end members; interlocking means formed along the upper and lower longitudinal edges of said panels, said interlocking means being formed so that said upper and lower edges are interlocked with each other when said assemblies are stacked one on top of the other; a plurality of equally spaced tongue-and-groove members vertically formed in said inner surface of said panels; a plurality of T-shaped mortises spaced apart from each other and vertically located in said side panels, said T-shaped mortises being defined by transverse slots formed in vertical tongue members and longitudinally disposed head slots, said mortises extending to a midway point of each of said side panels; a strut members having a web midsection and an H-shaped tenon member formed at each of the securing ends of said web midsection so as to be received in said respective mortises, said midsection of said strut member being formed having a plurality of truss members that define a plurality of flow-through openings formed therein to provide for an unobstructed flow of concrete therebetween; said H-shaped tenon members being integrally formed with said truss members, and each tenon member including an outer stud member and an inner stud member integrally connected by a web frame member, wherein said outer stud member of each of said tenons is formed having a wedge-shaped configuration so as to be forcibly positioned in said head slot to provide a locking arrangement therewith, said inner stud being positioned against said inner surface of said side panels, thereby preventing movement relative thereto, and wherein said web frame member thereof is located within said transverse slot whereby longitudinal movement between said opposed panels is prevented.
Claim 3
Dependent Claim
67 words
The combination as recited in claim 1 including a pair of end closure panels interposed between said side panels and positioned adjacent the ends thereof, wherein said end closure panels are formed with a pair of tongue-and-groove members located on opposite outer ends of said closure panels for coupling said end closure panels to said side panels at the open ends of the block form when required.
Claim 4
Dependent Claim
28 words
The combination as recited in claim 1, wherein said stud member includes means for forcibly pressing said stud member in a firm fixed position between said side panels.
References Cited (Backward Citations)
US994027A
Cited
US1751748A
Cited
US2134894A
Cited
GB700325A
Cited
US4439967A
Cited
US4731968A
Cited
US4516364A
Cited
US4706429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-12-04 | 1993-06-05 | 1993-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-04 | 1997-06-05 | 1997-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-04 | 2001-06-05 | 2001-12-05 | $7700.00 | Window Closed / Lapsed |