US3797793A - Shoring scaffold and formwork support - Google Patents
Shoring scaffold and formwork support Download PDFInfo
- Publication number
- US3797793A US3797793A US00264274A US3797793DA US3797793A US 3797793 A US3797793 A US 3797793A US 00264274 A US00264274 A US 00264274A US 3797793D A US3797793D A US 3797793DA US 3797793 A US3797793 A US 3797793A
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- US
- United States
- Prior art keywords
- screw
- roller
- supported
- jack
- supporting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/16—Members, e.g. consoles, for attachment to the wall to support girders, beams, or the like carrying forms or moulds for floors, lintels, or transoms
Definitions
- a shore member is to be supported to carry a load with adjustments at its top or bottom for vertical or horizontal positioning with or without relative movement in one or the other directions
- more than one shore member is generally required and either the footing or grade for each member has to be accommodated with respect to the other, or the position of a supported construction such as formwork must be adjusted both vertically and horizontally. It is of great convenience to make lateral as well as vertical adjustments with both rolling and rigid contacts and also provide for the application of forces in opposite directions vertically to hold or move a unitary supported load at each support station in proper orientataion.
- work scaffolds and formwork are generally moved intact from place to place to perform their functions and it is desired to roll one or the other of them intact between work positions and there rigidly support them at adjusted heights or inclinations for repeated uses.
- column shore brackets heretofore employed have many limitations and shortcomings either in requiring excessive lowering for roll out or not enough for clearance and versatility.
- adjustable jack screw mechanisms are mechanically integrated as a part of the whole support assembly whose total weight must be manually lifted when securing and removing it from its support position.
- a jack screw is provided which can be used at the top or bottom of a tubular support member such as a shore or bracket, to engage and coact with a surface either by rigid or rolling contact selectively at widely adjustable heights, each jack screw assembly with respect to the others and with respect to a load supported thereby.
- the supports comprise a simple, comparatively inexpensive, and indestructible frame having a vertically oriented tubular element which closely receives in axial telescoping relationship for rigid erectness the outside diameter of a heavy screw member having a heavy or square thread.
- Weight bearing winged nuts threadedly interengage the screw member and tubular element at the top or bottom, or both, of the tubular member with free running tolerances between the mating threads. No tools are required to make rigid height adjustments when setting up scaffolding or a formwork support level, or when rolling out the formwork intact for reuse.
- the frame is fabricated of comparatively light steel forms or plate for installation or removal without the adjustment mechanism being assembled therewith.
- the adjustment mechanism comprises a jack screw assembly that can be mounted or removed by axial telescopic movement with respect to the tubular element. This movement can be made vertically, or horizontally, into and out of its working position after the frame has been lifted and is being secured in place or being removed.
- the jack screw in turn carries a winged nut that engages the end of the tubular member in adjustable height and weight bearing relation.
- the exposed end of the jack screw receives a second winged nut thereon in weight bearing relationship and on its end is mounted a bracket for rigidly engaging a weight bearing surface.
- a bracket supporting a roller engages the second winged nut and the roller and rigid bracket are moved with respect to each other to place the roller in rolling contact with a weight bearing surface.
- the wing nuts can be grossly adjusted before the jack screw assembly is separately lifted and disposed in the bracket. Thereafter a workman merely finalizes the adjustment with substantial savings of time in handling both preliminary and final adjustments.
- the invention also contemplates means by which floor slab form-work may be pulled downwardly by the jack screws to straighten or lower the formwork involving winged nuts on an exposed lower end of the jack screw.
- a further object of the invention contemplates the immediate carrying of the formwork load by a roller that is adjustable as to height for ease of handling the formwork at any predetermined adjustable level even with the roller located at widely variable heights with respect to each other, if desired or required.
- Another object and advantage of the invention is the ready interchangeability and adjustment of self contained jack screw assemblies of different lengths for special applications. Additionally, the invention can be used with other vertically disposed tubular supports secured to structural columns and shore members. Also, installation and removal of the jack screw assemblies can be easily accomplished with the aid of a pulley hoist shored by a pole no higher than the bottom of a poured slab located above it.
- FIG. 1 is an upwardly directed perspective view showing one of the embodiments of the invention operating to support formwork for a poured concrete floor slab;
- FIG. 2 is a perspective view of the support shown in FIG. 1 in an intermediate stage of assembly
- FIG. 3 is a vertical sectional view of the assembled support shown in FIG. 1;
- FIGS. 4 and 5 are fragmentary, partly sectional views showing parts of the embodiment in FIG. 1 in alternate operational positions;
- FIG. 6 is a view similar to FIG. 3 showing a modified assembly thereof
- FIGS. 7 and 8 are views similar to FIGS. 4 and 5 illustrating a modification of the invention in alternate operational positions
- FIG. 9 is a cross-sectional view of the column taken on line 9-9 of FIG. 6;
- FIG. 10 is a sectional view taken on line 10-10 in FIG. 8:
- FIG. 11 is a view similar to FIG. 1 illustrating another embodiment of the invention.
- FIG. 12 is a perspective view of the support shown in FIG. 11 being assembled
- FIG. 13 is a vertical sectional view of the top portion of the jack screw assembly shown in FIG. 11;
- FIG. 13A is partial view of a modification of the screw jack shown in FIG. 13;
- FIG. 14 is a vertical sectional view of the assembly shown in FIG. 11 in which the jack screw is employed to strip the formwork;
- FIG. 14A is a view similar to FIG. 14 illustrating a modification of the frame shown in FIGS. 6 and 14;
- FIGS. 15 and 16 are views illustrating the alternate operational positions of the jack screw assembly shown in FIG. 11 supporting a work or shore scaffold.
- FIG. 10 a concrete structural column 10, ofa building that is being built of poured concrete and having vertical reinforcement rods 11 (FIG. 10), is shown in FIG. 1 supporting formwork 12 upon which concrete is poured to form the slab 14 of the next upper floor. After hardening, another series of structural columns will be formed on the slab l4 and the formwork illustrated will be lowered and rolled out intact in a horizontal direction and rigidly relocated on the new columns for reuse in forming the next slab above slab 14, etc.
- the frame of the formwork may include I" beams as shown in FIG. 11, timbers 16 are shown in FIG. I by way of simple illustration with formwork plywood panels 18.
- the column 10 is one of many that are spaced and aligned in parallel rows in a repetitive pattern with each having spaced tubular elements 20, or ty-lags. embedded in them and receiving removable bolts or studs 22 therethrough to accept nuts 26 thereon that clamp the frame portion 23 of the support 24 to receive and support the jack screw assembly 25, upon which the formwork is removably supported at an adjustable height.
- the frame 24 sometimes referred to as a bracket in the trade, comprises a section of a T-beam 27 or fabricated parts (FIG. 14) with a tubular member 32 welded thereto along the edge of the leg portion 34 and with right triangular braces 36 welded in the corners between the arms 38 and leg portion 34 at either or both ends of the T-beam section with stamped out slots 37 for ease in handling.
- the arms 38 provide a base portion 30 to engage the column 10 in supported relation.
- the base 30 has a pair of horizontally spaced holes 28 adjacent either or both ends of the T-beam section or vertically spaced holes 28A (FIG. 14A) located between reinforcement rods to receive through the uppermost pair thereof the threaded ends of the studs 22.
- the frame 24 may be secured by two or four studs with either end up, it preferably is disposed with the braces 36 downwardly where they may serve as handles during installation, adjustment and removal. Generally only two studs are employed.
- the nuts 26 on the studs 22 when tightened clamp the base against the column at a height, and, as later discussed, the jack screw can be mounted in place between the times of application of the two nuts.
- the tube 32 has cylindrical opening 40 therethrough and telescopically receives therein ajack screw 42 having external longitudinal undulations thereon such as a rack, or as shown, a square coarse helical thread 41 for relative vertical adjustment.
- a jack screw 42 having external longitudinal undulations thereon such as a rack, or as shown, a square coarse helical thread 41 for relative vertical adjustment.
- the jack screw is more than twice the length of the tube 32 with the thread either ending or obstructed at a point 46 spaced from the lower end of the jack screw a distance substantially equal to the length of the tube 32.
- the lower end of the jack screw 42 if cylindrically smooth fits with the tube and also substantially reduces thread contamination from the bottom of the tube.
- the tube 32 is supported by two parallel side plates 34A and an apertured cap plate 74A that are welded to a vertically elongated base 30A having vertically spaced holes 28A.
- the jack screw At its upper end the jack screw is of reduced size as later described and, as shown in FIGS. 1-3, carries a saddle member 48 that preferably is loosely but squarely engaged by the upper end of the screw 42 and has a cradle defining a frictional surface 50. Coacting to hold the saddle in operative position is a roller 52 journalled on an axle 54 supported at its ends by the upright arms 56 of a U-shaped member 58 whose bight 60 is apertured at 63 and secured to a depending collar 62.
- the axle 54 is a headed pin secured in place by a cotter key 55 and the collar has diametrically opposed axially elongated slots 64 slidably receiving the ends of a pin 66 carried by the bolt as also secured in place by a cotter key 68.
- the collar 62 and roller are axially movable with respect to each other to move the saddle 48 in and out of frictional engagement with the roller 52.
- a camming device engaging the thread undulations 41 such as a winged nut 70 having its hub 76 threadably received on the screw 42 has on its opposite sides weight-bearing, friction-reducing washers 72 and 74 which engage the lower end of the collar 62 and the upper end of the tube 32, respectively, in a weight bearing assembly whereby the load of the formwork carried by the roller 52 is transmitted at all times through the hub of the winged nut 70 to the upper end of the tube 32.
- FIG. 6 A modification demonstrating versatility is shown in FIG. 6 in which the same parts described are used with a second wing nut 70A added on the screw 42 to frictionally brake and release the roller at any determined adjustable level.
- the nut 70A, and nut 70 when adjusting to support the formwork, the nut 70A, and nut 70 also, if necessary, is turned until the roller 52 frictionally rests in the cradle 50. Thereafter advancement of the nut 70 locates the braked roller 52 at its working level with the timbers 16 resting thereon. After the poured slab 14 hardens, the nut 70A is reversely turned a few turns until the roller 52 is free and then the nut 70 is reversely turned until the desired roller roll-out level for the formwork is attained.
- the tubular element 20 is welded to the edge of the leg portion 34 of a formed section 27 while the tubular element 20A in FIGS. 15 and 16 constitutes the lower end of one of the shore legs 27 of a shoring scaffold upon which work or workmen are supported at a level above a surface or floor 31.
- the tubes and 10A have like cylindrical openings 30 therethrough and telescopically receive the jack screw 42 with the winged nut 70 in loosely threaded relationship engaging the tube end in weight bearing relationship.
- FIG. 14 is similar to the embodiment shown in FIG. 3 except that the collar 62A may be pinned without lost motion to the reduced end 43 of the jack screw and the saddle 48 of FIG. 3 is reshaped to provide a rigid support 50.
- the winged nut 70A may actuate the roller 52 and the rigid support 80 be engaged by the shaft 42 for relative movement between the two for selectively engaging either the formwork beam 16A (FIG. 14) or the floor 31' (FIG. the embodiment shown is one in which the rigid support 80 comprises a yoke-like member having the upper portions 82 of the vertical sides 83 of a U-shapedmember flattened outwardly to a common plane to provide a flat frictional engagement of the beam 16A or floor 31 with the bight portion 78 thereof preferably supported by the winged nut 70A in its extended position.
- the roller 52 is preferably received reciprocably between the sides 83 as journalled on the axle 54 that is carried by upstanding arms 56 of the U-shaped member 58 whose bight portion may be welded as at 25A (FIG. 13A) to the shaft 42 directly or is apertured at 57 and welded as at 59 to the collar 62 concentric therewith (FIG. 13) to telescope over the end 65 of the shaft 42 for the bight portion to be carried by the end of the shaft as secured thereto by the pin 66 without any lost motion in weight bearing relationship.
- the sides 83 are close enough to the roller 52 to hold it against lateral displacement in its reciprocable movement.
- a third winged nut 70B is illustrated in broken lines 708 in FIG. 14 on the lower end of the jack screw 42 to engage the lower end of the tube 32 if desired in conjunction with a C-clamp 84 that secures the lower flange 17 of the I-beam 16A to the upper portions 82 of the yoke.
- formwork can be stripped from the concrete slab 14 if it does not drop free as the winged nut 70A is retracted.
- the jack screw assembly is adjusted with the winged nut 78 advanced to extend the upper portions 82 beyond the roller 52 as shown in FIG. 13 whereupon the winged nut 70 is adjusted to gross height and the screw 32 dropped into place as shown by the arrow A in FIG. 12, the winged nut 70 comes to rest on the tubular member, as shown in FIG. 11. Thereafter the winged nut 70 is fine adjusted to locate the elements 82 at a predetermined height for supporting the formwork beam 16A thereon.
- the winged nut 70 is rotated to lower the member that contacts the beams 16 or 16A to a predetermined level and the winged nut 70A, where present, is rotated to place or free the roller 52 for rolling contact with the beam or floor as shown in FIGS. 3, 8, 9 and 15.
- the jack screw assembly can be lifted free if desired and the frame 23 removed for use in another location.
- the support 24 lends itself to knockdown shipping and servicing. Removal of cotter keys and turning the winged nuts enables finger disassembly and assembly of all parts for repair or replacement at the building site with little if any delay in a building program if a spare jack screw assembly is not available. Moreover, all threads can be cleaned of concrete debris.
- the saddle 48 is a loose element in the assembly, as geometrically supported operatively in the bight of the U-shaped member by the roller 52 for coaction with the upper end 43 of the jack screw 42 slidably received in the collar 62.
- the dimension of interest for this purpose is the distance indicated by the dotted arrows 63 in FIGS. 3 and 6. This distance between the corner 53 and the curve ofthe frictional surface 50 is greater than the maximum adjusted distance between the roller 52 and bight 60.
- the upper end 43 of the jack screw can either have the thread 41 extended to the saddle or it can be ofa diameter reduced to the minor diameter of the thread as at 65 (FIGS. 7, 8, 13 and 14) so that the nuts 70 and 70A can pass thereover.
- the slots 64 accommodating lost motion of the pin 66 are in the collar 62 or the upper end 43 of the shaft. ln both alternatives the tensional downward pull on the pin 66 squares and holds the collar against the wing nut 70 as at 61 while an upward end thrust by the jack screw 42 against the saddle 48 provides the deepest of the two alternate telescopic guided engagements between the parts for lateral support. Both, however, eliminate any weight strain of the formwork on the pin 66.
- the tensional downward pull of the collar 62 is utilized as already mentioned to strip the formwork, if necessary, by the use of the winged nut 708 when winged nut 70 relinquishes contact with the tubular member 32 when loosened.
- a frame having a base portion to engage a structural column and a vertically disposed tubular element spaced from said base above a work area and having an end bearing at its upper end,
- releasable means separately securing the frame base portion to said column at horizontally spaced locations for relative movement of the frame about one location with respect to the other to movably dispose said tubular means horizontally
- jack means including a screw telescopically received rotatably in said tubular element with heavy external threads thereon in rigid radial supported relationship over a lower end portion thereof,
- a first manually controlled nut means threadably carried by the screw intermediate its ends to releasably bear against said end bearing in screw supporting height adjusting relation
- a second manually controlled means threadably carried by the screw adjacent its upper end through which the screw member extends an adjustable distance
- roller means carried by one of said members
- rigid weight supporting means carried by the other of said members.
- said rigid means including means for securement to formwork supported thereby.
- jack screw means telescopically received in at least two of the support tubes
- winged nut means threaded on the upper ends of the threaded elements and engaging said tubes in adjustable weight bearing relationship
- roller means supported with their axes of rotation parallel and disposed normal to the axis of each of said threaded elements
- position controlling means supporting one of said last two means for relative vertical movement with respect to each other for alternately engaging a weight bearing surface and including a winged nut on each threaded member supporting one of said means and the other one of said means being carried by said threaded elements.
- a support frame having a base member with laterally spaced holes and vertically oriented tube means having an end bearing spaced a predetermined distance above a work area
- a screw member telescopically received in said tube means having radially extending thread elementsspaced axially along its surface, said thread elements at their major radial dimension engaging said tube means in rigid erecting relationship
- cam nut means threadably received on the screw member intermediate its ends to weight bear against said end bearing in screw supporting height adjusting relation to move the sleeve elements upwardly and downwardly predetermined distances in supporting relation
- bracket means supported upon the upper end of said screw member having a collar means resting against said cam nut means in a lower position
- roller means carried by said bracket means to engage form-work to be supported
- lost motion means interengaging said bracket means and said screw member in supported relation for relative movements between limits
- jack means telescopically received in the support means having radially extending undulations spaced axially along its surface, the major radial dimension of which internally engage said support means in telescopic rigidly erected relationship,
- roller means to engage an object to be supported in rolling relationship
- lost motion means interengaging said roller means and said retainer means in supported relation
- said jack means is a screw having a coarse thread and an upper end of a diameter reduced to approximately the inner diameter of said thread and telescopically supporting said bracket means in axial alignment
- said lost motion means including an elongated slot element and a pin element with one element on said jack means and the other element on said roller means to prevent relative rotation therebetween, and in one position of adjustment squaring said roller means against said retainer means.
- said brake means includes a saddle member interengaging said jack means and said roller means when said lost motion means is extended by said retainer means.
- said retainer means comprises a plurality of winged cam members, one engaging said end bearing and the other the roller means.
- jack screw means including a rotatively adjustable shaft means telescopically received in said tubular member for close axial alignment at one of its ends and having a heavy weight bearing thread intermediate its ends,
- bracket means engaging said jack screw at the other one of its ends and including lost motion means interconnecting them against relative rotation and limiting their relative extension
- roller means supported by said bracket means to engage the other one of said objects
- roller means includes a roller and an axle releasably journalling said roller on said bracket means
- said brake means comprising a saddle member having a face engaging said roller means and a radial dimension greater than the major distance of the roller means from said jack screw at said extension limit.
- jack means including a screw having heavy external threads and supporting at one end a vertically movable roller on one end,
- frame means including a narrow base plate to engage on one side the wall of a structural building column and having spaced apertures to receive a removable support means engaging said column,
- tubular means secured between said side plates to be disposed vertically to receive the other end of said screw telescopically and rotatively therein and having a cap element rotatably engaging said nut means in supported relationship.
- jack means supported on said tube means including a. cam nut means supported on said tube means.
- roller means carried by the upper end of said screw member in weight bearing relation with the roller disposed in a horizontal position
- said rigid means including means for securement to formwork supported thereby.
Abstract
Description
Claims (24)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US26427472A | 1972-06-19 | 1972-06-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3797793A true US3797793A (en) | 1974-03-19 |
Family
ID=23005317
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00264274A Expired - Lifetime US3797793A (en) | 1972-06-19 | 1972-06-19 | Shoring scaffold and formwork support |
Country Status (2)
Country | Link |
---|---|
US (1) | US3797793A (en) |
CA (1) | CA989375A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3900179A (en) * | 1973-01-12 | 1975-08-19 | Waco Scaffold & Shoring Co | Column roll out support |
US5233807A (en) * | 1991-06-04 | 1993-08-10 | Speral Aluminium Inc. | Multi-purpose structural member for concrete formwork |
ES2064204A2 (en) * | 1992-06-29 | 1995-01-16 | Alfe Encofrados S A | Recoverable shuttering system for floor structures |
US6347489B1 (en) | 1998-05-01 | 2002-02-19 | Chester R. Marshall, Jr. | Storm anchor system including foundation column with adjustable saddle-type positioning members |
US6394405B1 (en) * | 1999-07-13 | 2002-05-28 | Para Tech Incorporated | Continuously adjustable rescue strut |
US20050016111A1 (en) * | 2003-03-07 | 2005-01-27 | Wayne Knepp | Hinged support column |
US20130015306A1 (en) * | 2011-07-11 | 2013-01-17 | Roderick Milton Stewart | Plaster ceiling support device |
US20140305069A1 (en) * | 2013-04-16 | 2014-10-16 | Guangzhou Construction Engineering Co., Ltd. | Apparatus and method for reverse rectification |
US9027898B1 (en) * | 2012-07-27 | 2015-05-12 | Brent Holmboe | Shoring apparatus with roller bearing |
USD754531S1 (en) * | 2014-07-01 | 2016-04-26 | Weldon Industries, Inc. | Roller bearing |
CN107130793A (en) * | 2017-07-14 | 2017-09-05 | 四川华西集团有限公司 | Form frame system with exactly vertical elevation and horizontal location function |
US20170273458A1 (en) * | 2014-09-19 | 2017-09-28 | Intermetro Industries Corporation | Seismic baseplate |
WO2019170196A1 (en) * | 2018-03-09 | 2019-09-12 | Peri Gmbh | Supporting device for the construction industry, arrangement consisting of at least two such supporting devices, incremental launching device comprising at least one such supporting device, and method for supporting a load element using such a supporting device |
US20220242709A1 (en) * | 2021-01-29 | 2022-08-04 | Crown Equipment Corporation | Work assist system for an industrial vehicle |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US664798A (en) * | 1900-05-10 | 1900-12-25 | Grant Weidman | Stove-leg. |
US1772314A (en) * | 1927-08-09 | 1930-08-05 | William T Hormes | Caster |
US2386525A (en) * | 1944-02-16 | 1945-10-09 | Joseph S White | Roof center |
US2733030A (en) * | 1956-01-31 | hawthorne | ||
US3504879A (en) * | 1968-02-29 | 1970-04-07 | James K Strickland | Column shore bracket |
-
1972
- 1972-06-19 US US00264274A patent/US3797793A/en not_active Expired - Lifetime
-
1973
- 1973-06-12 CA CA173,861A patent/CA989375A/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2733030A (en) * | 1956-01-31 | hawthorne | ||
US664798A (en) * | 1900-05-10 | 1900-12-25 | Grant Weidman | Stove-leg. |
US1772314A (en) * | 1927-08-09 | 1930-08-05 | William T Hormes | Caster |
US2386525A (en) * | 1944-02-16 | 1945-10-09 | Joseph S White | Roof center |
US3504879A (en) * | 1968-02-29 | 1970-04-07 | James K Strickland | Column shore bracket |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3900179A (en) * | 1973-01-12 | 1975-08-19 | Waco Scaffold & Shoring Co | Column roll out support |
US5233807A (en) * | 1991-06-04 | 1993-08-10 | Speral Aluminium Inc. | Multi-purpose structural member for concrete formwork |
ES2064204A2 (en) * | 1992-06-29 | 1995-01-16 | Alfe Encofrados S A | Recoverable shuttering system for floor structures |
US6347489B1 (en) | 1998-05-01 | 2002-02-19 | Chester R. Marshall, Jr. | Storm anchor system including foundation column with adjustable saddle-type positioning members |
US6394405B1 (en) * | 1999-07-13 | 2002-05-28 | Para Tech Incorporated | Continuously adjustable rescue strut |
US20050016111A1 (en) * | 2003-03-07 | 2005-01-27 | Wayne Knepp | Hinged support column |
US7343713B2 (en) | 2003-03-07 | 2008-03-18 | Morton Buildings | Hinged support column |
US20080072529A1 (en) * | 2003-03-07 | 2008-03-27 | Morgan Buildings | Hinged support column |
US7574841B2 (en) | 2003-03-07 | 2009-08-18 | Morton Buildings | Method of erecting a wall having a vertically adjustable hinged support column |
US20130015306A1 (en) * | 2011-07-11 | 2013-01-17 | Roderick Milton Stewart | Plaster ceiling support device |
US9085910B2 (en) * | 2011-07-11 | 2015-07-21 | Historic Plaster Conservation Products Limited | Plaster ceiling support device |
US9027898B1 (en) * | 2012-07-27 | 2015-05-12 | Brent Holmboe | Shoring apparatus with roller bearing |
US20140305069A1 (en) * | 2013-04-16 | 2014-10-16 | Guangzhou Construction Engineering Co., Ltd. | Apparatus and method for reverse rectification |
US8935890B2 (en) * | 2013-04-16 | 2015-01-20 | Guangzhou DI•ER Construction Engineering Co., Ltd. | Apparatus and method for reverse rectification |
USD754531S1 (en) * | 2014-07-01 | 2016-04-26 | Weldon Industries, Inc. | Roller bearing |
US10743663B2 (en) * | 2014-09-19 | 2020-08-18 | Intermetro Industries Corporation | Seismic baseplate |
US20170273458A1 (en) * | 2014-09-19 | 2017-09-28 | Intermetro Industries Corporation | Seismic baseplate |
CN107130793A (en) * | 2017-07-14 | 2017-09-05 | 四川华西集团有限公司 | Form frame system with exactly vertical elevation and horizontal location function |
CN107130793B (en) * | 2017-07-14 | 2023-08-25 | 华西工程科技(深圳)股份有限公司 | Die carrier system with accurate vertical elevation and horizontal positioning functions |
WO2019170197A1 (en) * | 2018-03-09 | 2019-09-12 | Peri Gmbh | Method for displacing a ceiling formwork, collision protection element, and ceiling formwork, supporting device and incremental launching device comprising such a collision protection element |
US20210040751A1 (en) * | 2018-03-09 | 2021-02-11 | Peri Gmbh | Method for displacing a ceiling formwork, collision protection element, and ceiling formwork, supporting device and incremental launching device comprising such a collision protection element |
WO2019170196A1 (en) * | 2018-03-09 | 2019-09-12 | Peri Gmbh | Supporting device for the construction industry, arrangement consisting of at least two such supporting devices, incremental launching device comprising at least one such supporting device, and method for supporting a load element using such a supporting device |
US11788307B2 (en) * | 2018-03-09 | 2023-10-17 | Peri Se | Method for displacing a ceiling formwork, collision protection element, and ceiling formwork, supporting device and incremental launching device comprising such a collision protection element |
US20220242709A1 (en) * | 2021-01-29 | 2022-08-04 | Crown Equipment Corporation | Work assist system for an industrial vehicle |
US11866310B2 (en) * | 2021-01-29 | 2024-01-09 | Crown Equipment Corporation | Work assist system for an industrial vehicle |
Also Published As
Publication number | Publication date |
---|---|
CA989375A (en) | 1976-05-18 |
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