Patent US3689018A successfully refreshed from Google Patents.
US3689018A
Expired / Lapsed
US
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Formwork assembly
Assignee: HEVES MEGYEI BERUHAZASI VALLAL
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Filing: 1970-08-04
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Granted: 1972-09-05
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Expires: 1990-08-04
Abstract
Abstract The disclosure relates to a formwork assembly, more particularly for the construction of system-type concrete building units, comprising a set of shuttering elements comprising side and deck formwork panels, wheels for moving the forms by rolling, and support elements. The set of shuttering elements consists of wall shuttering panels, corner shuttering elements, deck shuttering panels, and where appropriate, formwork panel inserts. The deck shuttering portion comprises clamping means linked to the split formwork elements which serves to position the deck shuttering section and is made up of sections. The formwork assembly has an upper movement mechanism, arranged between the sections of the clamping means that is suitable for moving apart and drawing together these sections, and a lower movement mechanism which by means of connecting elements, suitably rods, is capable of moving apart and drawing together the two side panel parts of the shuttering portion. The formwork assembly contains further a control element connecting the upper and lower movement mechanism and operating these in synchronism.
Inventors
- 👤 Jozsef Pelle
- 👤 Laszlo Varga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:54
CPC Classifications
B; B60; B60L; B60L15/00; B60L15/42; B61; B61G; B61G5/00; B61G5/06; B61G5/10; B61G7/00; B61G7/14; E; E04; E04G; E04G11/00; E04G11/02; B60L2200/00; B60L2200/26; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/20588
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
166 words
Formwork assembly for the construction of cell system-type concrete building units, comprising opposite wall shuttering panels, corner shuttering elements, and deck shuttering panels, the deck shuttering panels comprising split formwork elements interconnected by clamping means for horizontal movement relative to each other, an upper movement mechanism for actuating the clamping means to move the split formwork elements toward and away from each other, a lower movement mechanism for moving said wall shuttering panels toward and away from each other, and a control element common to and interconnecting said upper and lower movement mechanisms for operating said mechanisms simultaneously and in synchronism, said control element comprising a rod having upper and lower threaded portions and means for turning the rod, said upper threaded portion actuating said clamping means upon rotation of said rod, said lower threaded portion being in screw-threaded engagement with a parallelogram linkage having upper and lower opposite screw threads that engage with oppositely threaded upper and lower screw threads on said lower threaded portion.
Claim 2
Dependent Claim
166 words
Formwork assembly for the construction of cell system-type concrete building units, comprising opposite wall shuttering panels, corner shuttering elements, and deck shuttering panels, the deck shuttering panels comprising split formwork elements interconnected by clamping means for horizontal movement relative to each other, an upper movement mechanism for actuating the clamping means to move the split formwork elements toward and away from each other, a lower movement mechanism for moving said wall shuttering panels toward and away from each other, and a control element common to and interconnecting said upper and lower movement mechanisms for operating said mechanisms simultaneously and in synchronism, said control element comprising a rod having upper and lower threaded portions and means for turning the rod, said upper threaded portion actuating said clamping means upon rotation of said rod, said lower threaded portion being in screw-threaded engagement with a parallelogram linkage having upper and lower opposite screw threads that engage with oppositely threaded upper and lower screw threads on said lower threaded portion.
Claim 3
Dependent Claim
125 words
Formwork assembly as claimed in claim 1 characterized in that the clamping means is formed from two beam sections (5a,5b) of wedge-shaped cross-section, and in that the upper movement mechanism consists of the following elements: (i) a locking element (6) having a wedge-shaped, upwardly tapering cross-section and arranged in the groove formed between the beam sections (5a,5b), (ii) a stirrup (7) provided with an internally threaded bore (7a) through which the upper threaded portion (8b) of the control rod (8) passes, which stirrup (7) collaborates with the beam sections of the clamping means via its upper arm ends, (iii) securing stirrups (12a,12b) equipped with securing spindles (13) serving for securing the beam sections of the clamping means and for limiting the extent of the movement.
Claim 4
Dependent Claim
188 words
Formwork assembly as claimed in claim 1 characterized in that the clamping means if formed from two beam sections (25a,25b) of L-shaped cross-section, and in that the upper movement mechanism consists of a parallelogram linkage (26), and in that the outeR ends of this parallelogram linkage can be articulated with the aid of guide pins (27a,27b) arranged on the inside of the beam sections of the clamping means, and in that the inner ends are connected in the same articulated manner to the internally threaded sleeves (28a,28b) that accommodate the upper threaded portions of the control rod, the sleeves being provided with opposite threads in order to effect the moving together or apart of the parallelogram linkage arms (9) when the wheel (11) secured to the control rod (8) is turned in direction A or B respectively, and in that the threads of the sleeves (28a,28b;9a, 9b) of the upper parallelogram linkage (26) of the lower parallelogram linkage (9) and those of the end portions of the control rod are constructed such that the moving towards each other and moving apart of these parallelogram linkage arms occurs synchronously.
Claim 5
Dependent Claim
87 words
Formwork assembly as claimed in claim 3 characterized in that telescopic reinforcing and movement limiting supports (29) are arranged between the internal surfaces of the beam sections (25a, 25b) of L-shaped cross-section of the clamping means, with the parallelogram linkage arranged between these supports in whose outer jacket (29a) a slot is formed whose length matches the dimensions of the distance between the formwork elements in the expanded state of the assembly and in whose inner tubular portion (29b) a pin led in the groove is secured.
Claim 6
Dependent Claim
52 words
Formwork assembly as claimed in claim 1 characterized in that the formwork assembly has a deck suspension construction that is inserted in the floor construction before stripping and concreting for the purpose of suspending decks of large span, which construction consists of hooks (19a), inclined bearing rods (19b) and vertical drawbars (19c).
Claim 7
Dependent Claim
40 words
Formwork assembly as claimed in claim 1 characterized in that the formwork assembly has inclined support elements (17,18) of adjustable size for connecting the central portion of the deck shuttering section with the base portion of the wall shuttering section.
Claim 8
Dependent Claim
48 words
Formwork assembly as claimed in claim 3 characterized in that the formwork assembly has a gap sealing panel (33) that during placing of the concrete is suitable for sealing the gap (32) formed during moving apart of the beam sections (25a,25b) of L-shaped cross-section of the clamping means.
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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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |