CN110805249A - Indoor scaffold with protection structure - Google Patents
Indoor scaffold with protection structure Download PDFInfo
- Publication number
- CN110805249A CN110805249A CN201911117815.7A CN201911117815A CN110805249A CN 110805249 A CN110805249 A CN 110805249A CN 201911117815 A CN201911117815 A CN 201911117815A CN 110805249 A CN110805249 A CN 110805249A
- Authority
- CN
- China
- Prior art keywords
- support
- support frame
- fixed
- hand
- bolt
- 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.)
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Classifications
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- 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
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
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- 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
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/24—Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
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- 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
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/28—Scaffolds primarily resting on the ground designed to provide support only at a low height
- E04G1/30—Ladder scaffolds
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- 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
- E04G5/00—Component parts or accessories for scaffolds
-
- 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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/14—Railings
-
- 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
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/24—Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
- E04G2001/248—Inclined struts
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- 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
- E04G5/00—Component parts or accessories for scaffolds
- E04G2005/008—Hoisting devices specially adapted as part of a scaffold system
Abstract
The invention discloses an indoor scaffold provided with a protection structure, which comprises two support frames, wherein a ladder stand is fixed on one side of each support frame, an inclined rod is arranged between the two support frames, a support cross rod is fixed at the top end of each support frame, a pedal is clamped at the top end of the support cross rod, a material pulling mechanism is arranged at the top end of each pedal, and anti-shaking mechanisms are arranged on two sides of each support frame. According to the invention, the first support rods on the two sides of the support frame are pulled, the angle of the first support rods can be adjusted through the movable shaft, the first support rods are supported, the movable shaft is driven by the sliding block to move up and down in the sliding groove, the height of the first support rods is adjusted, the first support rods support the two sides of the support frame, the support frame is reinforced to prevent the support frame from shaking, workers at the top end of the support frame are prevented from shaking during operation to cause the falling danger, and the first support rods can be retracted to fit the support frame through the sliding block and the sliding groove, so that the transportation is facilitated.
Description
Technical Field
The invention belongs to the technical field of scaffolds, and particularly relates to an indoor scaffold provided with a protection structure.
Background
The hand frame refers to various supports which are erected for workers to operate and solve vertical and horizontal transportation on a construction site, is mainly used for up-and-down operation of constructors, enclosure of peripheral safety nets, high-altitude installation members and the like, is also used as a template for some projects, and is also widely used in advertising departments, municipal departments, traffic roads, bridges, mines and other departments.
The prior art has the following problems:
1. in the using process of the existing indoor scaffold, when workers move back and forth on pedals to work, the scaffold can shake, and the danger that the workers easily fall off is caused;
2. current indoor scaffold frame, when it uses, through the transport operation instrument that makes a round trip that needs the staff one on the other, very hard, and influence the construction process.
3. When the existing indoor scaffold is used, if a worker does not stand stably and falls down, the scaffold is easy to fall and is dangerous.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides an indoor scaffold provided with a protection structure, which has the characteristic of preventing personnel from falling into a transportation tool.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an install indoor scaffold frame of protection architecture, includes two support frames, its characterized in that: one side of two support frames is fixed with the cat ladder, and has cup jointed the down tube between two support frames, the top of support frame is fixed with the support horizontal pole, and its top block that supports the horizontal pole has the footboard, and the top of footboard installs and draws material mechanism, the both sides of support frame are installed and are prevented rocking mechanism, and the top both sides of support frame install protection machanism respectively.
Preferably, the two support frames are symmetrical about the central axis of the support cross rod, and the support frames are movably connected with the support cross rod.
Preferably, the anti-shaking mechanism is internally provided with a sliding groove, the sliding groove and the support frame are integrally connected through a slot, a sliding block is sleeved and inserted in the sliding groove, a movable shaft is fixed to the other side of the sliding block, a first support rod is fixed to one side of the movable shaft, a first hand-operated screwing bolt is connected to one side of the support frame in a threaded mode, the first hand-operated screwing bolt is movably connected to the sliding block, a second hand-operated screwing bolt is connected to one side of the movable shaft in a threaded mode, and the second hand-operated screwing bolt penetrates through one side of the movable shaft and the first support rod and is movably connected to the first support rod.
The first support rod forms a rotating mechanism through the movable shaft and the sliding block, and the movable shaft forms a sliding structure through the sliding block and the sliding groove.
Preferably, the inside of drawing material mechanism is including two backup pads, and is welded connection between the top of backup pad and footboard, the first axis of rotation of inside fixedly connected with of backup pad, the opposite side of its first axis of rotation is fixed with the reel, and the fixed surface of reel is connected with the haulage rope, one side gomphosis of backup pad is connected with the crank, and is fixed connection between crank and the first axis of rotation.
Preferably, the traction rope is connected with the winding drum in a winding mode, and the winding drum forms a rotating structure with the supporting plate through the first rotating shaft.
Preferably, the inside of protection machanism is including two flexible interior poles, and for cup jointing between the top of flexible interior pole and support frame to be connected, the top welding of flexible interior pole has the second bracing piece, and one side welding of second bracing piece has the draw-in groove, the plate washer has been cup jointed to the inside of draw-in groove, and one side threaded connection of draw-in groove has the third hand to twist the bolt, the third hand is twisted the one end that the bolt is close to the draw-in groove central line and is fixed with the gasket, and is connected for the laminating between gasket and the plate washer.
Preferably, the gasket is movably connected with the baffle plate, and the gasket is screwed by a third hand to form a telescopic structure with the clamping groove.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, under the action of the anti-shaking mechanism, when the support frame is supported, the first support rods on the two sides of the support frame are pulled, the angle of the first support rods can be adjusted through the movable shaft, the first support rods are supported, the movable shaft is driven by the sliding block to move up and down in the sliding groove, the height of the first support rods is adjusted, the first support rods support the two sides of the support frame, the support frame is reinforced to prevent shaking, workers at the top end of the support frame are prevented from shaking during operation to cause the risk of falling, and the first support rods can be retracted to be attached to the support frame through the sliding block and the sliding groove, so that the transportation is facilitated.
2. According to the invention, under the action of the material pulling mechanism, the crank handle is manually shaken, the crank handle can drive the winding drum to rotate, and the traction rope on the surface of the winding drum is wound and unwound, so that a tool to be used can be pulled onto the pedal through the traction rope when a worker works at high altitude, the phenomenon that the worker needs to take the tool one by one in the past is changed, time and labor are saved, and the working efficiency is improved.
3. According to the invention, under the action of the protection mechanism, the two baffles are inserted into the two clamping grooves, so that two sides of an operator can be blocked to prevent the operator from falling off during construction when the operator operates on the pedal, the gasket can be driven to extrude the baffles in the clamping grooves by screwing the third hand to screw the bolt, the baffles are fixed, the baffles are prevented from falling off, the top end of the support frame can be rapidly installed and disassembled through the telescopic inner rod at the bottom end of the second support rod, the operation is simple, and time and labor are saved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the anti-wobble mechanism of the present invention;
FIG. 3 is a schematic structural view of a material pulling mechanism according to the present invention;
FIG. 4 is a schematic structural view of a shielding mechanism according to the present invention;
FIG. 5 is a schematic top view of the protection mechanism of the present invention.
In the figure: 1. a support frame; 2. climbing a ladder; 3. a diagonal bar; 4. a support rail; 5. a pedal; 6. an anti-sloshing mechanism; 601. a chute; 602. a slider; 603. a movable shaft; 604. a first support bar; 605. screwing the bolt by a first hand; 606. screwing a bolt by a second hand; 7. a material pulling mechanism; 701. a support plate; 702. a first rotating shaft; 703. a reel; 704. a hauling rope; 705. a crank; 8. a protection mechanism; 801. a telescopic inner rod; 802. a second support bar; 803. a card slot; 804. a baffle plate; 805. thirdly, screwing the bolt by hand; 806. and (7) a gasket.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides the following technical solutions: the utility model provides an install indoor scaffold frame of protection architecture, includes two support frames 1, its characterized in that: one side of two support frames 1 is fixed with cat ladder 2, and cup jointed down tube 3 between two support frames 1, the top of support frame 1 is fixed with supports horizontal pole 4, its top block that supports horizontal pole 4 has footboard 5, and the top of footboard 5 is installed and is drawn material mechanism 7, anti-rock mechanism 6 is installed to the both sides of support frame 1, and the top both sides of support frame 1 install protection machanism 8 respectively, can climb up footboard 5 through cat ladder 2, can make the staff at high altitude construction through footboard 5.
Two support frames 1 become symmetry about the axis of supporting horizontal pole 4, and be swing joint between support frame 1 and the supporting horizontal pole 4.
The anti-shaking mechanism 6 comprises a sliding groove 601 inside, the sliding groove 601 and the support frame 1 are integrally connected through a slot, a sliding block 602 is inserted in the sliding groove 601 in a sleeved mode, a movable shaft 603 is fixed to the other side of the sliding block 602, a first support rod 604 is fixed to one side of the movable shaft 603, a first hand-screwed bolt 605 is connected to one side of the support frame 1 in a threaded mode, the first hand-screwed bolt 605 is movably connected with the sliding block 602 in a movable mode, a second hand-screwed bolt 606 is connected to one side of the movable shaft 603 in a threaded mode, and the second hand-screwed bolt 606 penetrates through one side of the movable shaft 603 and is movably connected with the first support rod 604 in a threaded.
The first supporting rod 604 forms a rotating mechanism through the movable shaft 603 and the sliding block 602, and the movable shaft 603 forms a sliding structure through the sliding block 602 and the sliding groove 601, so that the first supporting rod 604 can adjust the angle and the height, and the first supporting rod 604 can fix the supporting frame 1 conveniently.
The inside of the pulling mechanism 7 includes two supporting plates 701, the top ends of the supporting plates 701 and the pedal 5 are connected by welding, the inside of the supporting plates 701 is fixedly connected with a first rotating shaft 702, the other side of the first rotating shaft 702 is fixed with a winding drum 703, the surface of the winding drum 703 is fixedly connected with a pulling rope 704, one side of the supporting plates 701 is embedded and connected with a crank 705, the crank 705 is fixedly connected with the first rotating shaft 702, and the crank 705 can drive the winding drum 703 to rotate.
The pulling rope 704 is wound and connected with the winding drum 703, a rotating structure is formed between the winding drum 703 and the supporting plate 701 through the first rotating shaft 702, and the rotating winding drum 703 can drive the pulling rope 704 to be wound and unwound.
The inside of the protection mechanism 8 comprises two telescopic inner rods 801, the telescopic inner rods 801 are connected with the top end of the support frame 1 in a sleeved mode, the top end of the telescopic inner rod 801 is welded with a second support rod 802, one side of the second support rod 802 is welded with a clamping groove 803, a baffle 804 is sleeved inside the clamping groove 803, a third hand-screwed bolt 805 is in threaded connection with one side of the clamping groove 803, a gasket 806 is fixed at one end, close to the central line of the clamping groove 803, of the third hand-screwed bolt 805, and the gasket 806 is connected with the baffle 804 in a fitted mode.
The gasket 806 is movably connected with the baffle 804, and the gasket 806 is connected with the clamping groove 803 through a third hand-screwed bolt 805 to form a telescopic structure, so that the baffle 804 in the clamping groove 803 can be conveniently detached and installed.
The movable shaft 603 of the present invention is a well-known technique that has been disclosed for a wide range of applications and daily life,
the working principle and the using process of the invention are as follows: the invention firstly clamps a pedal 5 on the supporting cross rods 4 at two sides, a worker stands at the top end of the pedal 5 through a ladder 2, then cooperates with other workers to insert a telescopic inner rod 801 at the bottom end of a second supporting rod 802 into the top end of a supporting frame 1, then a baffle 804 is sleeved into a clamping groove 803, a third hand-screwed bolt 805 is screwed manually, the third hand-screwed bolt 805 drives a gasket 806 to extrude the baffle 804 in the clamping groove 803 to clamp and fix the baffle 804, so as to prevent the worker from falling during operation, when the worker needs to take a construction tool, the handle 705 is shaken manually, the handle 705 drives a winding drum 703 to rotate, a traction rope 704 on the surface of the winding drum 703 is prevented from being taken out, one end of the traction rope 704 is moved downwards, the tool to be constructed is tied on the traction rope 704, the handle 705 is rotated, the tool to be used is pulled to the pedal 5, and then a plurality of first supporting rods 604 are pulled, first bracing piece 604 passes through loose axle 603 angle of adjustment, and rethread slider 602 drives loose axle 603 and goes up and down to move in spout 601, adjusts the height of first bracing piece 604, makes its first bracing piece 604 support the both sides of support frame 1, consolidates support frame 1 and prevents that it from taking place to rock, ensures the safety of staff when the high worker's operation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an install indoor scaffold of protection architecture, includes two support frames (1), its characterized in that: one side of two support frames (1) is fixed with cat ladder (2), and has cup jointed down tube (3) between two support frames (1), the top of support frame (1) is fixed with supports horizontal pole (4), and its top block that supports horizontal pole (4) has footboard (5), and the top of footboard (5) is installed and is drawn material mechanism (7), the both sides of support frame (1) are installed and are prevented rocking mechanism (6), and the top both sides of support frame (1) are installed respectively and are protected mechanism (8).
2. An indoor scaffold with a protective structure installed thereon as claimed in claim 1, wherein: the two support frames (1) are symmetrical about the central axis of the support cross rod (4), and the support frames (1) are movably connected with the support cross rod (4).
3. An indoor scaffold with a protective structure installed thereon as claimed in claim 1, wherein: the utility model discloses an anti-sway mechanism, including spout (601), and constitute integration between spout (601) and support frame (1) and be connected through the fluting, the inside of spout (601) is cup jointed and is inserted and is equipped with slider (602), and the opposite side of slider (602) is fixed with loose axle (603), and one side of loose axle (603) is fixed with first bracing piece (604), one side threaded connection of support frame (1) has first hand bolt (605), and is swing joint between first hand bolt (605) and slider (602), one side threaded connection of loose axle (603) has second hand bolt (606), and second hand bolt (606) pass between one side of loose axle (603) and first bracing piece (604) be swing joint.
4. An indoor scaffold with a protective structure installed thereon as claimed in claim 1, wherein: the first supporting rod (604) and the sliding block (602) form a rotating mechanism through the movable shaft (603), and the movable shaft (603) and the sliding groove (601) form a sliding structure through the sliding block (602).
5. An indoor scaffold with a protective structure installed thereon as claimed in claim 1, wherein: the inside of drawing material mechanism (7) is including two backup pads (701), and is welded connection between the top of backup pad (701) and footboard (5), the inside fixedly connected with first axis of rotation (702) of backup pad (701), and the opposite side of its first axis of rotation (702) is fixed with reel (703), and the fixed surface of reel (703) is connected with haulage rope (704), one side gomphosis of backup pad (701) is connected with crank (705), and is fixed connection between crank (705) and first axis of rotation (702).
6. An indoor scaffold with a protective structure installed as claimed in claim 5, wherein: the traction rope (704) is connected with the winding drum (703) in a winding mode, and the winding drum (703) forms a rotating structure with the supporting plate (701) through the first rotating shaft (702).
7. An indoor scaffold with a protective structure installed thereon as claimed in claim 1, wherein: protection machanism's (8) inside is including two interior poles of stretching out and drawing back (801), and for cup jointing between the top of interior pole of stretching out and drawing back (801) and support frame (1) to be connected, the top welding of the pole of stretching out and drawing back (801) has second bracing piece (802), and one side welding of second bracing piece (802) has draw-in groove (803), plate washer (804) have been cup jointed to the inside of draw-in groove (803), and one side threaded connection of draw-in groove (803) has third hand to twist bolt (805), the one end that third hand is twisted bolt (805) and is close to draw-in groove (803) central line is fixed with gasket (806), and is connected for laminating between gasket (806) and plate washer (804).
8. An indoor scaffold with a protective structure installed as claimed in claim 7, wherein: the gasket (806) is movably connected with the baffle plate (804), and a telescopic structure is formed between the gasket (806) and the clamping groove (803) through a third hand-screwed bolt (805).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911117815.7A CN110805249A (en) | 2019-11-15 | 2019-11-15 | Indoor scaffold with protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911117815.7A CN110805249A (en) | 2019-11-15 | 2019-11-15 | Indoor scaffold with protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110805249A true CN110805249A (en) | 2020-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911117815.7A Pending CN110805249A (en) | 2019-11-15 | 2019-11-15 | Indoor scaffold with protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110805249A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111827647A (en) * | 2020-09-21 | 2020-10-27 | 山东工商学院 | High scaffold frame for construction of security |
| CN113323347A (en) * | 2021-06-16 | 2021-08-31 | 厦门华厦学院 | Outdoor construction mounting bracket structure of optimal design |
| CN113463890A (en) * | 2021-07-05 | 2021-10-01 | 中国建筑第二工程局有限公司 | Steel construction high altitude construction safety device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3850264A (en) * | 1973-03-22 | 1974-11-26 | R Salinas | Ground supported scaffolding |
| EP0861952A1 (en) * | 1997-02-27 | 1998-09-02 | HYMER LEICHTMETALLBAU GmbH & Co. KG | Scaffold with vertically movable outtrigger |
| CN204174960U (en) * | 2014-10-20 | 2015-02-25 | 陈龙兴 | Steel structure bracing frame |
| CN205116676U (en) * | 2015-10-15 | 2016-03-30 | 苏州拓科装饰工程有限公司 | Convenient to carry's scaffold |
| CN207700653U (en) * | 2017-12-30 | 2018-08-07 | 思百危实业（上海）有限公司 | Novel moveable scaffold |
| CN110118013A (en) * | 2019-06-23 | 2019-08-13 | 宁波鄞州竹创信息科技有限公司 | A kind of civic building construction scaffold height adjustment mechanism |
| CN209585572U (en) * | 2019-01-15 | 2019-11-05 | 浙江百辰食品科技有限公司 | A kind of construction site anti-skidding scaffold |
-
2019
- 2019-11-15 CN CN201911117815.7A patent/CN110805249A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3850264A (en) * | 1973-03-22 | 1974-11-26 | R Salinas | Ground supported scaffolding |
| EP0861952A1 (en) * | 1997-02-27 | 1998-09-02 | HYMER LEICHTMETALLBAU GmbH & Co. KG | Scaffold with vertically movable outtrigger |
| CN204174960U (en) * | 2014-10-20 | 2015-02-25 | 陈龙兴 | Steel structure bracing frame |
| CN205116676U (en) * | 2015-10-15 | 2016-03-30 | 苏州拓科装饰工程有限公司 | Convenient to carry's scaffold |
| CN207700653U (en) * | 2017-12-30 | 2018-08-07 | 思百危实业（上海）有限公司 | Novel moveable scaffold |
| CN209585572U (en) * | 2019-01-15 | 2019-11-05 | 浙江百辰食品科技有限公司 | A kind of construction site anti-skidding scaffold |
| CN110118013A (en) * | 2019-06-23 | 2019-08-13 | 宁波鄞州竹创信息科技有限公司 | A kind of civic building construction scaffold height adjustment mechanism |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111827647A (en) * | 2020-09-21 | 2020-10-27 | 山东工商学院 | High scaffold frame for construction of security |
| CN113323347A (en) * | 2021-06-16 | 2021-08-31 | 厦门华厦学院 | Outdoor construction mounting bracket structure of optimal design |
| CN113463890A (en) * | 2021-07-05 | 2021-10-01 | 中国建筑第二工程局有限公司 | Steel construction high altitude construction safety device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200218 |
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| RJ01 | Rejection of invention patent application after publication |