CN110371844A - A kind of flat bar suspender and its application method - Google Patents
A kind of flat bar suspender and its application method Download PDFInfo
- Publication number
- CN110371844A CN110371844A CN201910621425.7A CN201910621425A CN110371844A CN 110371844 A CN110371844 A CN 110371844A CN 201910621425 A CN201910621425 A CN 201910621425A CN 110371844 A CN110371844 A CN 110371844A
- Authority
- CN
- China
- Prior art keywords
- flat bar
- block
- connector
- protection block
- bar
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
Abstract
The invention discloses a kind of flat bar suspender and its application methods, are related to the technical field of concrete casting, solve the problems, such as that existing concrete block lifts low efficiency, its key points of the technical solution are that including flat bar, connector and protection block；The side of flat bar offers connecting hole, and protection block side offers link slot, and the two sides of link slot are provided with connecting column, and application method includes: a. protection block connection；B. concrete is poured；C. protection block removes；D. connector connects；E. it lifts；Flat bar is embedded into concrete; then it is coated using the one end of protection block to flat bar; protection is removed fastly after casting complete; it is attached by connector and flat bar; then the hook of crane is hooked on flat bar and is lifted; so that more saving the time in the process of lifting, improve work efficiency.
Description
Technical field
The present invention relates to the technical fields of concrete casting, more specifically, it is related to a kind of flat bar suspender and its use
Method.
Background technique
In present building field, in order to enable construction is more convenient, usually can all it use a large amount of preforming
Concrete block, but be all usually using fixture to all kinds of concrete when being lifted to these concrete blocks
Block is clamped, and is then transported again by transporting equipments such as cranes to fixture, to will be mixed by crane and fixture
Solidifying soil block transports suitable position.
But in the process clamped using fixture to concrete block, need for fixture to be clamped in concrete block conjunction
Then suitable position can lift concrete block, this also allows for concrete block can waste greatly when being lifted
The time of amount greatly reduces the efficiency of work.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of flat bar suspender and its application method,
Then it is coated by the way that flat bar to be embedded into concrete using the one end of protection block to flat bar, will after casting complete
Protection is removed fastly, is attached by connector and flat bar, then the hook of crane is hooked on flat bar and is lifted i.e.
Can, so that more saving the time in the process of lifting, improve work efficiency.
To achieve the above object, the present invention provides the following technical scheme that a kind of flat bar suspender and its application method, including
Flat bar, the connector for being attached with flat bar and the protection coated for connecting one end with connector to flat bar
Block；
The close position that one end is connect with connector in the side of flat bar offers the connecting hole through flat bar, and protection block is hemispherical
It is arranged and has elasticity, protection block offers link slot away from the side of plane, and the two sides of link slot, which are provided with, to be fixedly connected on
The connecting column being inserted into connecting hole in protection block, the distance between link slot two sides are equal to the thickness of flat bar, connecting column
Length is equal to the diameter of link slot equal to the half of flat bar thickness and the diameter of connecting column.
By using above-mentioned technical proposal, elasticity when use using protection block makes the two sides of link slot mutually remote
From and two connecting columns are separated from each other, flat bar is then connect one end with connector and is inserted into link slot, it is then loose
The limit to protection block is opened, so that connecting column is inserted into connecting hole, is then pushed against protection block away from the side of flat bar
On on the inside of casting mold, then carry out the casting of concrete, after concrete formation, using protection block elasticity by protection block from
It removes, is then connected on flat bar through connector, it is enterprising that the hook of crane is then connected to connector in concrete block
The lifting of row concrete improves work efficiency so that lifting is more time saving.
The present invention is further arranged to: the arc-shaped setting in one end that the flat bar is connect with connector, the arc court of flat bar
To away from the direction of flat bar protrusion, the arc-shaped setting of link slot bottom side, the bottom of link slot is connect with flat bar and connector
Side cooperates.
By using above-mentioned technical proposal, flat bar end and the cooperation for connecting trench bottom, so that between flat bar and protection block
Connection it is more firm, it is not easy to shake.
The present invention is further arranged to: the connector includes the link block of rounded setting, is arranged in link block
And the connecting rod rotated and for being inserted into connecting hole can be carried out around the axis of link block；
Link block offers the sliding groove of setting annular in shape close to the position of periphery, the arc-shaped setting of connecting rod and can be
It is slided in sliding groove；
The side of link block offers recessing groove, and the distance between recessing groove two sides are equal to the thickness of flat bar, and recessing groove is close to even
It connects block axis side to be located on the inside of sliding groove close to link block axis side, link block is opened on the periphery of the side of recessing groove
Equipped with arc-shaped setting and the through slot interconnected with sliding groove；
Link block side offers the through-hole through link block.
By using above-mentioned technical proposal, after casting complete, flat bar is connect one end with connector and is inserted into recessing groove
In the middle, connecting rod is inserted into connecting hole by the bar that is then slidably connected, and the connection of link block and flat bar is completed, then by lifting
The hook of machine is completed to hook across through-hole.
The present invention is further arranged to: described connecting rod one end is fixedly connected with away from the side of link block axis along connection
The driving lever of block radial direction setting.
By using above-mentioned technical proposal, slided by setting driving lever convenient for stirring connecting rod.
The present invention is further arranged to: being provided through the U-shaped bar of through-hole on the link block, is provided on U-shaped bar and U
The connecting plate that the U-shaped both ends of type bar are fixedly connected, connecting plate side offer the hole for hoist through connecting plate.
By using above-mentioned technical proposal, crane hook can be increased by setting connecting plate and hole for hoist and hook operation
When operating space so that operation it is more convenient.
The present invention is further arranged to: the bottom of the flat bar is fixedly connected with two hang plates, and two hang plates are in flat bar
Bottom is arranged in herringbone.
By using above-mentioned technical proposal, by the way that two hang plates are arranged, so that the connection between flat bar and concrete block is more
Add it is firm so that flat bar is not easy to be detached from concrete block.
The present invention is further arranged to: the bottom of the flat bar is fixedly connected with and the orthogonal anti-off board of flat bar.
By using above-mentioned technical proposal, by the way that anti-off board is arranged, so that the connection between flat bar and concrete block is more
It is firm, so that flat bar is not easy to be detached from concrete block.
The present invention is further arranged to: the flat bar side offers several limit holes through flat bar.
By using above-mentioned technical proposal, reinforcing bar can be passed through in limit hole, so that flat bar and concrete block
Between connection it is more firm so that flat bar is not easy to be detached from concrete block.
Another object of the present invention with a kind of application method of flat bar suspender is provided, by this method to concrete block into
Row lifting when more save the time, improve working efficiency, application method the following steps are included:
A. protection block connects: using the elasticity of protection block the two sides of link slot being located remotely from each other and makes two connecting columns mutual
Separation, then connect one end with connector for flat bar and is inserted into link slot, then unclamp the limit to protection block, so that even
Column is connect to be inserted into connecting hole；
B. concrete is poured: protection block being pushed against on the inside of casting mold away from the side of flat bar, and in the limit of flat bar
Limit steel bar is passed through in hole, then carries out the casting of concrete；
C. protection block removes: after concrete formation, being removed protection block from flat bar using the elasticity of protection block；
D. connector connects: the exposed one end of flat bar is inserted into recessing groove, then stirs driving lever, so that connecting rod is inserted into
In connecting hole, the connection to connector is completed；
E. it lifts: by being hooked into the hole for hoist of connecting plate for crane, then directly carrying out the lifting of concrete block.
By using above-mentioned technical proposal, when lifting, only needs for link block to connect with flat bar, by connecting plate and crane
Hook connection can be lifted so that the time is more saved in lifting, and can be improved working efficiency.
In conclusion the present invention has the advantages that compared with the prior art
1, the present invention makes link slot using the elasticity of protection block when use by setting flat bar, connector and protection block
Two sides be located remotely from each other and two connecting columns be separated from each other, flat bar is then connect one end with connector and is inserted into link slot
In the middle, the limit to protection block is then unclamped, so that connecting column is inserted into connecting hole, then by protection block away from flat bar
Side is pushed against on casting mold inside, then the casting of progress concrete, after concrete formation, utilizes the elasticity of protection block
Protection block is removed in concrete block, is then connected on flat bar through connector, is then connected to the hook of crane
The lifting that concrete is carried out on connector improves work efficiency so that lifting is more time saving；
2, the present invention is by two hang plates of setting, so that the connection between flat bar and concrete block is more firm, so that flat bar is not
It is easy to be detached from concrete block.
Detailed description of the invention
Fig. 1 is the flat bar of embodiment one and the axonometric drawing of connector；
Fig. 2 is the schematic diagram of the protection block of embodiment one；
Fig. 3 is the axonometric drawing of the flat bar of embodiment one；
Fig. 4 is the link block of embodiment one and the cross-sectional view of flat bar；
Fig. 5 is the flat bar of embodiment two and the schematic diagram of connector.
In figure: 1, flat bar；11, connecting hole；12, limit hole；13, anti-off board；14, hang plate；2, connector；21, it connects
Block；211, through-hole；212, recessing groove；213, sliding groove；214, through slot；22, U-shaped bar；23, connecting plate；231, hole for hoist；24,
Connecting rod；25, driving lever；26, wirerope；3, protection block；31, link slot；32, connecting column；33, block is pushed against.
Specific embodiment
Embodiment one: a kind of flat bar suspender, referring to attached drawing 1 and attached drawing 2, including flat bar 1, for being attached with flat bar 1
Connector 2 and the protection block 3 that is coated for connecting one end with connector 2 to flat bar 1；The side of flat bar 1 it is close with
The position that connector 2 connects one end offers the connecting hole 11 through flat bar 1, and flat bar 1 is fixedly connected away from one end of connector 2
Have and the orthogonal anti-off board 13 of flat bar 1；The setting hemispherical of protection block 3, the arc side of protection block 3 can be coated on flat
One end that bar 1 and connector 2 are attached.
First one end that flat bar 1 is connect with connector 2 is coated by protection block 3 when use, then by protection block 3
On plane side is pushed against on the inside of casting mold, the casting of concrete block is then carried out, after concrete block solidification, by protection block
3 remove in concrete block, so that one end that flat bar 1 is connect with connecting rod 24 exposes, are then connected to connector 2
On flat bar 1, finally the hook of crane is hooked on connector 2, concrete block is lifted.
Referring to attached drawing 2 and attached drawing 3,1 side of flat bar offers the connecting hole 11 through flat bar 1 away from one end of limit plate,
Several limit holes 12 through flat bar 1 are offered on flat bar 1, can pass through reinforcing bar in limit hole 12, limit hole 12 is located at connection
Between hole 11 and anti-off board 13；3 circular arc side of protection block offers link slot 31, and the two sides of link slot 31, which are provided with, to be fixedly connected
The connecting column 32 being inserted into connecting hole 11 in protection block 3, the distance between 31 two sides of link slot are equal to the thickness of flat bar 1
Degree, the length of connecting column 32 is equal to the half of 1 thickness of flat bar and the diameter of connecting column 32 is equal to the diameter of link slot 31, and two connect
It is coaxial to connect two connecting columns 32 when column 32 contacts with each other；The arc-shaped setting in one end that flat bar 1 is connect with connector 2, the arc of flat bar 1
The direction protrusion of flat bar 1 is faced away from, 31 bottom of link slot is provided with the abutting block 33 being fixedly connected in protection block 3, pushes against
The arc-shaped setting of the top side of block 33, the top for pushing against block 33 connect side mutual cooperation with flat bar 1 and connector 2.Protection
Block 3 has elasticity；When cladding using protection block 3 to flat bar 1, first with the resiliency urged link slot 31 of protection block 3
Two sides moved towards the direction that mutually deviates from so that two connecting columns 32 are separated from each other, then flat bar 1 is inserted into
In link slot 31, and the end of flat bar 1 is pushed against and is pushed against on block 33, then unclamped the limit to protection block 3, protecting
Under the elasticity of protecting block 3, connecting column 32 is inserted into connecting hole 11；Only need to push the two sides of link slot 31 when disassembly
It is mobile towards the direction mutually deviated from, so that connecting column 32 is detached from from connecting hole 11, then flat bar 1 is taken from link slot 31
Out.
Referring to attached drawing 1 and attached drawing 4, connector 2 includes the link block 21 of rounded setting, is arranged in link block 21 simultaneously
And the connecting rod 24 rotated and for being inserted into connecting hole 11 can be carried out around the axis of link block 21, passes through link block
21 U-shaped bar 22 and the connecting plate 23 being fixedly connected with U-shaped bar 22U type both ends；The side of link block 21 is offered through company
The through-hole 211 of block 21 is connect, U-shaped bar 22 passes through connecting hole 11；23 side of connecting plate offers the hole for hoist through connecting plate 23
231, the hook of crane can pass through hole for hoist 231 and lift by crane to connecting plate 23；Link block 21 is opened close to the position of periphery
Sliding groove 213 equipped with setting annular in shape, connecting rod 24 is arc-shaped to be arranged and can slide in sliding groove 213；Even
The side for connecing block 21 offers recessing groove 212, and the distance between 212 two sides of recessing groove are equal to the thickness of flat bar 1, recessing groove 212
It is located at 213 inside of sliding groove close to 21 axis side of link block close to 21 axis side of link block, link block 21 deviates from recessing groove
The through slot 214 for offering arc-shaped setting on the periphery of 212 side and being interconnected with sliding groove 213；Connecting rod 24 1
End is fixedly connected with the driving lever 25 along the setting of 21 radial direction of link block away from the side of 21 axis of link block, and driving lever 25 passes through logical
Slot 214 stretches out link block 21, and stirring driving lever 25 can push connecting rod 24 to be slided, to control the insertion of connecting rod 24 and take off
From connecting hole 11.
The flat bar suspender is to carry out working principle when using as follows: making link slot 31 using the elasticity of protection block 3
Two sides are located remotely from each other and two connecting columns 32 are separated from each other, and flat bar 1 is then connect one end with connector 2 and is inserted into connection
In slot 31, the limit to protection block 3 is then unclamped, so that connecting column 32 is inserted into connecting hole 11, then by protection block 3
It is pushed against on the inside of casting mold away from the side of flat bar 1, then the casting of progress concrete, after concrete formation, utilizes
The elasticity of protection block 3 removes protection block 3 in concrete block, so that the connecting hole 11 on flat bar 1 exposes, by flat bar 1
One end is connect with connector 2 to be inserted into recessing groove 212, driving lever 25 is stirred and connecting rod 24 is slided, by connecting rod 24
It is inserted into connecting hole 11, the connection of link block 21 and flat bar 1 is completed, then by the hook of crane across hole for hoist 231
It completes to hook, then lift concrete block by crane.
Embodiment two: a kind of flat bar suspender, referring to attached drawing 5, the difference of the present embodiment and embodiment one on flat bar 1
Unlocked connection anti-off board 13 and be fixedly connected with two hang plates 14, connector 2 do not include U-shaped bar 22 and connecting plate 23 and including
Wirerope 26；Two hang plates 14 are fixedly connected on one end that flat bar 1 deviates from connecting rod 24, and two hang plates 14 are located at close to flat
One end that the position of 1 two sides of bar and two hang plates 14 deviate from flat bar 1 is obliquely installed towards the direction mutually deviated from, so that
Two hang plates 14 are arranged on flat bar 1 in herringbone.The both ends of wirerope 26, which are connected and fixed, to link together and wirerope 26
Across through-hole 211.
A kind of embodiment three: application method of flat bar suspender, comprising the following steps:
A. protection block 3 connects: using the elasticity of protection block 3 two sides of link slot 31 being located remotely from each other and makes two connecting columns
32 are separated from each other, and flat bar 1 is then connect one end with connector 2 and is inserted into link slot 31, is then unclamped to protection block 3
Limit, so that connecting column 32 is inserted into connecting hole 11；
B. concrete is poured: protection block 3 being pushed against on the inside of casting mold away from the side of flat bar 1, and in the limit of flat bar 1
Position passes through limit steel bar in hole 12, then carries out the casting of concrete；
C. protection block 3 removes: after concrete formation, being removed protection block 3 from flat bar 1 using the elasticity of protection block 3；
D. connector 2 connects: the exposed one end of flat bar 1 is inserted into recessing groove 212, then stirs driving lever 25, so that connection
Bar 24 is inserted into connecting hole 11, completes the connection to connector 2；
E. lift: in the hole for hoist 231 for being hooked into connecting plate 23 or wirerope 26 of crane, then directly into
The lifting of row concrete block.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of flat bar suspender, it is characterised in that: including flat bar (1), for the connector (2) that is attached with flat bar (1) with
And the protection block (3) coated for connecting one end with connector (2) to flat bar (1)；
The close position for connecting one end with connector (2) in the side of flat bar (1) offers the connecting hole (11) through flat bar (1),
Protection block (3) is hemispherical to be arranged and has elasticity, and protection block (3) offers link slot (31) away from the side of plane, connects
The two sides of slot (31) are provided with the connecting column (32) being inserted into connecting hole (11) being fixedly connected on protection block (3), connection
The distance between slot (31) two sides are equal to the thickness of flat bar (1), and the length of connecting column (32) is equal to the half of flat bar (1) thickness simultaneously
And the diameter of connecting column (32) is equal to the diameter of link slot (31).
2. a kind of flat bar suspender according to claim 1, it is characterised in that: what the flat bar (1) connect with connector (2)
The arc-shaped setting in one end, the arc of flat bar (1) face away from the direction protrusion of flat bar (1), and link slot (31) bottom side is in arc
Shape setting, the bottom of link slot (31) connect side mutual cooperation with flat bar (1) and connector (2).
3. a kind of flat bar suspender according to claim 1, it is characterised in that: the connector (2) includes rounded setting
Link block (21), setting in the link block (21) and can be rotated and be used for around the axis of link block (21)
The connecting rod (24) being inserted into connecting hole (11)；
Link block (21) offers the sliding groove (213) of setting annular in shape close to the position of periphery, and connecting rod (24) is arc-shaped
It is arranged and can be slided in sliding groove (213)；
The side of link block (21) offers recessing groove (212), and the distance between recessing groove (212) two sides are equal to flat bar (1)
Thickness, recessing groove (212) are located on the inside of sliding groove (213) close to link block (21) axis side close to link block (21) axis one
Side, link block (21) away from recessing groove (212) side periphery on offer it is arc-shaped setting and with sliding groove (213) phase
Intercommunicated through slot (214)；
Link block (21) side offers the through-hole (211) through link block (21).
4. a kind of flat bar suspender according to claim 3, it is characterised in that: described connecting rod (24) one end deviates from link block
(21) side of axis is fixedly connected with the driving lever (25) along the setting of link block (21) radial direction.
5. a kind of flat bar suspender according to claim 3, it is characterised in that: be provided through on the link block (21) logical
The U-shaped bar (22) in hole (211) is provided with the connecting plate (23) being fixedly connected with the U-shaped both ends of U-shaped bar (22) on U-shaped bar (22),
Connecting plate (23) side offers the hole for hoist (231) through connecting plate (23).
6. a kind of flat bar suspender according to claim 1, it is characterised in that: the bottom of the flat bar (1) is fixedly connected with
Two hang plates (14), two hang plates (14) are arranged in the bottom of flat bar (1) in herringbone.
7. a kind of flat bar suspender according to claim 1, it is characterised in that: the bottom of the flat bar (1) is fixedly connected with
With flat bar (1) orthogonal anti-off board (13).
8. a kind of flat bar suspender according to claim 1, it is characterised in that: flat bar (1) side offers several pass through
Wear the limit hole (12) of flat bar (1).
9. a kind of application method of flat bar suspender described in claim 1-8, it is characterised in that: the following steps are included:
A. protection block (3) connects: making the two sides of link slot (31) be located remotely from each other and make two using the elasticity of protection block (3)
Connecting column (32) is separated from each other, and flat bar (1) is then connect one end with connector (2) and is inserted into link slot (31), then
The limit to protection block (3) is unclamped, so that connecting column (32) is inserted into connecting hole (11)；
B. concrete is poured: protection block (3) being pushed against on the inside of casting mold away from the side of flat bar (1), and in flat bar
(1) limit steel bar is passed through in limit hole (12), then carries out the casting of concrete；
C. protection block (3) remove: after concrete formation, using protection block (3) elasticity by protection block (3) from flat bar (1)
It removes；
D. connector (2) connects: the exposed one end of flat bar (1) is inserted into recessing groove (212), then stirs driving lever (25),
So that connecting rod (24) is inserted into connecting hole (11), the connection to connector (2) is completed；
E. it lifts: the hook of crane is hooked into the hole for hoist (231) of connecting plate (23), then directly carry out concrete
The lifting of block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910621425.7A CN110371844A (en) | 2019-07-10 | 2019-07-10 | A kind of flat bar suspender and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910621425.7A CN110371844A (en) | 2019-07-10 | 2019-07-10 | A kind of flat bar suspender and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110371844A true CN110371844A (en) | 2019-10-25 |
Family
ID=68252621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910621425.7A Pending CN110371844A (en) | 2019-07-10 | 2019-07-10 | A kind of flat bar suspender and its application method |
Country Status (1)
| Country | Link |
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| CN (1) | CN110371844A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0163008A1 (en) * | 1984-04-28 | 1985-12-04 | Siegfried Fricker | Lifting and handling device |
| EP0832840A2 (en) * | 1996-09-30 | 1998-04-01 | Sergio Zambelli | Device for lifting prefabricated components, particularly made of concrete, or the like |
| WO2003021059A1 (en) * | 2001-09-05 | 2003-03-13 | Austrim National Radiators Limited T/A Reid Engineering Systems | Orientation apparatus |
| US20130340357A1 (en) * | 2012-06-20 | 2013-12-26 | Meadow Burke Llc | Method and Apparatus for Attaching Temporary Lifting Members to an Existing Lifting Anchor |
| US8800220B1 (en) * | 2012-09-28 | 2014-08-12 | Sidney E. Francies, III | Precast concrete recess insert |
| US9151065B1 (en) * | 2012-09-27 | 2015-10-06 | A.L. Patterson, Inc. | Precast concrete lift anchor assembly |
-
2019
- 2019-07-10 CN CN201910621425.7A patent/CN110371844A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0163008A1 (en) * | 1984-04-28 | 1985-12-04 | Siegfried Fricker | Lifting and handling device |
| EP0832840A2 (en) * | 1996-09-30 | 1998-04-01 | Sergio Zambelli | Device for lifting prefabricated components, particularly made of concrete, or the like |
| WO2003021059A1 (en) * | 2001-09-05 | 2003-03-13 | Austrim National Radiators Limited T/A Reid Engineering Systems | Orientation apparatus |
| US20130340357A1 (en) * | 2012-06-20 | 2013-12-26 | Meadow Burke Llc | Method and Apparatus for Attaching Temporary Lifting Members to an Existing Lifting Anchor |
| US9151065B1 (en) * | 2012-09-27 | 2015-10-06 | A.L. Patterson, Inc. | Precast concrete lift anchor assembly |
| US8800220B1 (en) * | 2012-09-28 | 2014-08-12 | Sidney E. Francies, III | Precast concrete recess insert |
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Application publication date: 20191025 |
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| RJ01 | Rejection of invention patent application after publication |