US20110088973A1 - Ladder apparatus adapted for a scaffold - Google Patents
Ladder apparatus adapted for a scaffold Download PDFInfo
- Publication number
- US20110088973A1 US20110088973A1 US12/580,327 US58032709A US2011088973A1 US 20110088973 A1 US20110088973 A1 US 20110088973A1 US 58032709 A US58032709 A US 58032709A US 2011088973 A1 US2011088973 A1 US 2011088973A1
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- US
- United States
- Prior art keywords
- platform
- ladder
- internal
- hook
- connection components
- 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.)
- Abandoned
Links
- 230000000712 assembly Effects 0.000 claims abstract description 23
- 238000000429 assembly Methods 0.000 claims abstract description 23
- 238000003780 insertion Methods 0.000 claims description 10
- 230000037431 insertion Effects 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 11
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/10—Steps or ladders specially adapted for scaffolds
Abstract
A ladder apparatus adapted for a scaffold is disclosed. The ladder apparatus includes a ladder, two top connection components disposed at a top of the ladder, two bottom connection components disposed at a bottom of the ladder, and two platform assemblies connecting the ladder. The ladder includes two lateral rails and a plurality of step shelves arranged between the rails. Each platform assembly has a platform, two fasteners connected respectively to opposite ends of an external side of the platform, two straddlers connected respectively to opposite ends of an internal side of the platform, and two retainers protruding respectively from two lateral sides of the platform. The ladder connects the internal sides of the two platform assemblies via the top and bottom connection components respectively. The platform assemblies stride over and are against two lateral stringers of the scaffold via the straddlers and join the scaffold via the fasteners. Hence, the top and bottom of the ladder apparatus are served as stages for operators standing on and doing construction jobs.
Description
- [Field of the Invention]
- The present invention relates generally to construction, and is more specifically concerned with a ladder apparatus adapted for a scaffold, which top and bottom are served as stages for operators standing on and doing construction jobs.
- [Background of the Invention]
- Conventional ladder applied to a scaffold, disclosed in
FIG. 14 , includes twolateral rails 132,several steps 134 arranged at intervals and between the tworails 132, fourhooks 136 disposed at opposite ends of abody 130 that is composed of therails 132 andsteps 134, and fourfasteners 140 respectively pivoted to thehooks 136 viarivets 142. Eachhook 136 has anextension arm 137 to form arecess 138, which is of appropriate depth. Eachfastener 140 has an angular displacement to the relatinghook 136. - Referring
FIG. 15 , thehooks 136 clasp thestringers 145, so that theladder 120 can join the scaffold. However, therecesses 138 of thehooks 136 follow the same direction indicated as a center line “A” inFIG. 14 , and need to be deep enough for “clasping. To install or remove theladder 120 must need at least two laborers at the same time, because it is so large and heavy that two or more laborers are able to lift it. - Besides, somewhere to support the laborers or to serve as a stage for the laborers doing construction jobs is neither at the top nor at the bottom of the
ladder 120, it causes inconvenience and danger to the laborers. - Thus, the
conventional ladder 120 is not really practiced into suitability and results in the delay of construction. - A primary object of the present invention is to provide a ladder apparatus adapted for a scaffold. The top and the bottom of the ladder apparatus are served as stages on which operators could stand and implement construction jobs.
- Another object of the present invention is to provide a ladder apparatus adapted for a scaffold, which is light and short enough to be set upon the scaffold by only one person.
- Additional object of the present invention is to provide a ladder apparatus adapted for a scaffold, which is easy to be installed into and removed from the scaffold.
- According to primary aspect of the present invention, a ladder apparatus adapted for a scaffold including a ladder and two platform assemblies is disclosed. The ladder includes two lateral rails and a plurality of step shelves arranged at intervals between the rails. Two top connection components are disposed at a top of the ladder, two bottom connection components disposed at a bottom of the ladder. Each platform assembly has a platform, two fasteners connected respectively to opposite ends of an external side of the platform, two straddlers connected respectively to opposite ends of an internal side of the platform, and two retainers protruding respectively from two lateral sides of the platform. The ladder connects the internal side of one platform assembly via the bottom connection components and connects the internal side of the other platform assembly via the top connection components. The platform assemblies join the scaffold via the fasteners, and stride over and are against two lateral stringers of the scaffold via the straddlers.
- In order to install the ladder, one platform assembly should be placed on a lower story of the scaffold first. The two straddlers at opposite ends of the platform stride over and are supported by two lateral stringers of the lower story, the two retainers are against the two stringers thereby, and the two fasteners join two leveling jacks that are disposed on two lateral uprights of the scaffold. The other platform assembly is installed on an upper story in the same manner and arranged behind the previous one. In addition, the bottom connection components connect the internal side of the lower platform assembly and the top connection components connect the internal side of the upper platform assembly, the ladder is jointed to the two platform assemblies and the scaffold thereby.
- Hence, the top and bottom platform assemblies according to the ladder apparatus are served as stages at every story, on which operators are able to stand and to do construction jobs. Besides, the ladder according to the present invention is shorter and lighter than the conventional one; it is easy to install and remove the ladder for just one person and results in extensive convenience for the construction.
- These and other objects and advantages of the present invention will be more readily apparent after consideration of the following description in conjunction with the drawings.
-
FIG. 1 is a perspective view illustrating a ladder apparatus of a preferred embodiment according to the present invention; -
FIG. 2 is a perspective view illustrating a ladder according to the present invention; -
FIG. 3 is an enlarged perspective view according to part ofFIG. 2 ; -
FIG. 4 is a perspective view of a bottom platform assembly according to the present invention; -
FIG. 5 is an enlarged explosive view according to part ofFIG. 4 ; -
FIG. 6 is a perspective view illustrating the bottom platform assembly clasps a scaffold according to the present invention; -
FIG. 7 is an operation view illustrating a top platform assembly clasps a scaffold according to the present invention; -
FIG. 8 is a perspective view illustrating a top platform assembly clasps a scaffold according to the present invention; -
FIG. 9 is an operation view illustrating the top and bottom platform assemblies connects to the scaffold according to the invention; -
FIG. 10 is a perspective view illustrating the ladder apparatus connects to the scaffold of the preferred embodiment; -
FIG. 11 is a perspective view illustrating the ladder apparatus applied to a two-story scaffold according to the invention; -
FIG. 12 is a side view ofFIG. 11 ; -
FIG. 13 is an enlarged view according to part ofFIG. 11 ; -
FIG. 14 is a perspective view of a connectional ladder; and -
FIG. 15 is a perspective view of the connectional ladder applied to a scaffold. - Certain embodiments as disclosed herein provide for a
ladder apparatus 10 adapted for a scaffold, which has aladder 20 and twoplatform assemblies - The
ladder 20, referred inFIG. 1 , has twolateral rails 22 being slant and paralleled to each other, a plurality ofstep shelves 24, twotop connection components 30, and twobottom connection components 40. Thestep shelves 24 connect thelateral rails 22 and are spaced at intervals between thelateral rails 22. - Each
top connection component 30 has ahook 32 and aremovable clip member 35. Thehook 32 has anotch 33 recessed from a top face thereof Thenotch 33 is formed with an included angle, which is appropriately 90 degree. Illustrated inFIG. 3 , thehook 32 further has avacancy 34 recessed from a bottom face thereof with an appropriately depth. Thehook 32 is disposed at the top end of a respective one of therails 22. Eachmovable clip member 35 is arc-shaped, and has anupper slot 36 and alower slot 37 formed thereof. Fourrivets 38 are regulated on and applied to the upper andlower slots hook 32, such that eachmovable clip member 35 is pivoted to a lateral side of thehook 32 and swung next to thehook 32 with angular displacements. Eachbottom connection component 40 is U-shaped and arranged at a bottom end of eachrail 22 to straddle over and grasp the internal joist of the relative platform assembly. - With respect to
FIGS. 1 and 4 , the two platform assemblies in practice are atop platform assembly 50 and abottom platform assembly 100, and the configuration and structure of each platform assembly are identical. Therefore the following description is defined by thebottom platform assembly 50, which is representative of all. Thebottom platform assembly 50 has aplatform 60, twofasteners 70, twostraddlers 80 and tworetainers 90. Theplatform 60 has astep shelf 62, aninternal joist 66 and anexternal joist 64. The twojoists step shelf 62 respectively, and connected to thestep shelf 62 by weldingseveral ledgers 68. Theledgers 68 are transversely welded to the bottoms of thejoists step self 62 for connecting these three members all together, so as to strengthen theplatform 60. - With respect to
FIGS. 4 and 5 , the twofasteners 70 are connected respectively to opposite ends of theexternal joist 64 of theplatform 60. Eachfastener 70 includes acasing 71 and aninsertion member 75 fitting in thecasing 71. Thecasing 71 is horse-shoe-shaped, and has anopening 72 recessed from a central portion of a front, and twoelongated slits casing 71. The top andbottom slits opening 71. The insertion member is a wedge-shaped flat pin, and has a top end, which is wider than a bottom end thereof Theinsertion member 75 is capable of penetrating downwardly via the bottom end thereof and passing the top slit 73, theopening 72 and the bottom slit 74 of thecasing 71 sequentially. - Each
straddler 80 has an end folded downwardly, and is disposed at opposite ends of theinternal joist 66. - The
retainers 90 protrude respectively from two lateral sides of theplatform 60; eachretainer 90 is arranged between therespective fastener 70 andstraddle 80. In practice, theretainer 90 is next to thefastener 70; tworetainers 90 are arranged in a collinear manner, referring inFIG. 4 . - With respect to
FIG. 6 , in order to install theladder apparatus 10 upon the scaffold, thebottom platform assembly 50 is placed first. The twostraddlers 80 stride over and are against twoopposite stringers 110 of a story of the scaffold, the tworetainers 90 are against top faces of thestringers 110 thereby. Thecasing 71 of eachfastener 70 grips a levelingjack 113, which is disposed on anupright 112 of the scaffold, because theopening 72 receives the levelingjack 113 and theinsertion member 75 downwardly penetrates the top slit 73 of thecasing 71, a thoughhole 114 of the levelingjack 113 and the bottom slit 71 of thecasing 71. Thefasteners 70 grip the levelingjack 113 for orienting thebottom platform assembly 50; the two lateral sides of thebottom platform assembly 50 are supported by the twoopposite stringers 110 and the leveling jacks 113, thebottom platform assembly 50 is set firmly upon to the scaffold thereby. - With respect to
FIG. 7 , after the setting of thebottom platform assembly 50, the operator could stand on thestep shelf 62 of thebottom platform assembly 50 and install thetop platform assembly 100 upon thestringers 115 of the upper story. As the operator is alone, thetop platform assembly 100 can be placed at middle sections of thestringers 115 or sections which the operator is close to. Thetop platform assembly 100 is supported by thestringers 115 while thestraddlers 80 stride over thestringers 115 and theretainers 90 are against thestringers 115. After that, the operator could push thetop platform assembly 100 away, as shown an indicating arrow. - With respect to
FIGS. 8 and 9 , after thetop platform assembly 100 is orientated at the upper story, theladder 20 could be implemented between the top andbottom platform assemblies bottom connection components 40 join theinternal joist 66 of thebottom platform assembly 50. Then, theladder 20 is pushed and slants enough for the top connection components griping theinternal joist 66 of thetop platform assembly 100 via thehooks 30, illustrated inFIG. 12 . Theinternal joist 66 is received in thevacancy 34 of thehook 30 and is clamped with theclip member 35. After that, the operator could climb up theladder 20 to thetop platform assembly 100 and secure thefasteners 70 to the leveling jacks 116, shown inFIG. 10 , and thetop platform assembly 100 is set firmly upon to the scaffold thereby so as to complete theladder apparatus 10. Thus, the operator can install the bottom andtop platform assemblies - The
fasteners 70 are secured onto the levelingjacks lateral uprights retainers 90 and thestraddlers 80 are against the tops of thestringers platform assemblies step shelf 62, the tilt of thestep shelf 62 would be avoided. - Furthermore, the top and
bottom platform assemblies ladder 20 between them is shorter than the conventional one and is lighter correspondingly. Theladder 20 according to the present invention could be carried and installed by just one operator, and it would provide convenience to the job and speed up the construction. - With respect to
FIGS. 11 and 12 , when theladder 20 of the lower story is finished, the operator could just stand on thetop platform assembly 100 of the lower story for setting thetop platform assembly 100′ and then theladder 20′. The ladder apparatuses 10, 11 are implemented for the lower and upper stories of the scaffold, anotherplatform 120 could be placed on the most top of the scaffold, on which the operator could stand and do construction jobs. Theplatform 120 is arranged between thestringer 119 and theinternal joist 66. The bottom edge of theplatform 120 just engages into thenotch 33 of thehook 32 of thetop connection component 30, shown inFIG. 13 , so as to secure theplatform 120 to thenotch 33. The design of theladder upper ladder 20′. Thetop platform assembly 100′ of the upper story is dismantled then, the operator goes down to thebottom platform assembly 50 of the lower story to remove thelower ladder 20. - The
ladder apparatus 10 adapted for the scaffold according to the present invention meets the advantages with simple structure, which is included with the fasteners and retainers for staying firm on the scaffold and the platform assemblies for serving as operation stages. The fasteners and retainers could guarantee the stable contact to the scaffold by avoiding from the vibration or tilt of the step shelf, which may result from one-side standing of the operator. In addition, the platform assembly is used for the operator walking or doing jobs. Furthermore, the length of theladder 20, which is shorter and lighter than that of the conventional one, is much easy to be installed or removed; to put into practice easily brings the convenience of operation. - The foregoing description of the embodiments of the invention has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. Many modifications and variations are possible in light of the above teaching. It is intended that the scope of the invention be limited not by this detailed description, but rather by the claims appended hereto.
Claims (17)
1. A ladder apparatus adapted for a scaffold, comprising two platform assemblies and a ladder connecting with the platforms, wherein:
the ladder includes two lateral rails being slant and paralleled to each other, a plurality of step shelves connecting the lateral rails and spaced at intervals between the rails, two bottom connection components disposed at a bottom of the ladder, and two top connection components disposed at a top of the ladder; and
each of the two platform assemblies has a platform, two fasteners connected respectively to opposite ends of an external side of the platform, two straddlers connected respectively to opposite ends of an internal side of the platform, and two retainers protruding respectively from two lateral sides of the platform;
each of the two retainers are arranged between the respective fastener and straddle; the ladder connects the internal sides of the two platform assemblies via the top and bottom connection components respectively; the two platform assemblies stride over and are against two lateral stringers of the scaffold via the straddlers and the retainers, and join the scaffold via the fasteners.
2. The ladder apparatus according to claim 1 , wherein the platform includes a platform, an external joist and an internal joist; the external and internal joists are arranged next to external and internal sides of the platform; the two fasteners are disposed at opposite ends of the external joist, and the two straddlers are disposed at opposite ends of the internal joist.
3. The ladder apparatus according to claim 1 , wherein the two retainers are arranged in a collinear manner.
4. The ladder apparatus according to claim 2 , wherein each straddler has an end folded downwardly.
5. The ladder apparatus according to claim 2 , wherein each bottom connection component is U-shaped and arranged at a bottom end of each rail to straddle over and grasp the internal joist of the relative platform assembly.
6. The ladder apparatus according to claim 1 , wherein each fastener includes a casing and an insertion member fitting in the casing; the casing has an opening recessed from a front, and two slits respectively formed at top and bottom portions of the casing; the two slits correspond to each other and communicate with the opening; the insertion member has a top end, which is wider than a bottom end thereof, the insertion member is capable of penetrating downwardly and passing the slits of the casing via the bottom end thereof.
7. The ladder apparatus according to claim 2 , wherein each fastener includes a casing and an insertion member fitting in the casing; the casing has an opening recessed from a front, and two slits respectively formed at top and bottom portions of the casing; the two slits correspond to each other and communicate with the opening; the insertion member has a top end, which is wider than a bottom end thereof, the insertion member is capable of penetrating downwardly and passing the slits of the casing via the bottom end thereof.
8. The ladder apparatus according to claim 1 , wherein each of the top connection components includes a hook connected to a top end of each rail, and a clip member pivoted to a lateral side of the hook and being swung next to the hook; the two top connection components clasp the internal joist of the relative platform assembly.
9. The ladder apparatus according to claim 8 , wherein the hook has a notch recessed from a top face thereof.
10. The ladder apparatus according to claim 9 , wherein the notch is formed with an included angle, which is appropriately 90 degree.
11. The ladder apparatus according to claim 2 , wherein each of the top connection components includes a hook connected to a top end of each rail, and a clip member pivoted to a lateral side of the hook and being swung next to the hook; the two connection components clasp the internal joist of the relative platform assembly.
12. The ladder apparatus according to claim 11 , wherein the hook has a notch recessed from a top face thereof.
13. The ladder apparatus according to claim 2 , wherein the platform includes at least one ledger transversely arranged at bottoms of the internal and external joists and a bottom of the step shelf for connecting these three all together.
14. A ladder apparatus adapted for a scaffold, comprising two platform assemblies and a ladder connecting with the platforms, wherein:
the ladder includes two lateral rails paralleled to each other, a plurality of step shelves connecting the lateral rails and spaced at intervals between the rails, two bottom connection components disposed at a bottom of the ladder, and two top connection components disposed at a top of the ladder; and
each of the two platform assemblies has a platform, two fasteners connected respectively to opposite ends of an external side of the platform, and two straddlers connected respectively to opposite ends of an internal side of the platform;
the ladder connects the internal sides of the two platform assemblies via the top and bottom connection components respectively; the two platform assemblies stride over and are against two lateral stringers of the scaffold via the straddlers, and join the scaffold via the fasteners.
15. The ladder apparatus according to claim 14 , wherein the platform includes a platform, an external joist and an internal joist; the external and internal joists are arranged next to external and internal sides of the platform; the two fasteners are disposed at opposite ends of the external joist, and the two straddlers are disposed at opposite ends of the internal joist.
16. The ladder apparatus according to claim 14 , wherein each of the top connection components includes a hook connected to a top end of a respective rail, and a clip member pivoted to a lateral side of the hook and being swung next to the hook; the hook has a notch recessed from a top face thereof, the two top connection components clasp the internal joist of the relative platform assembly.
17. The ladder apparatus according to claim 15 , wherein each of the top connection components includes a hook connected to a top end of a respective rail, and a clip member pivoted to a lateral side of the hook and being swung next to the hook; the hook has a notch recessed from a top face thereof, the two top connection components clasp the internal joist of the relative platform assembly.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/580,327 US20110088973A1 (en) | 2009-10-16 | 2009-10-16 | Ladder apparatus adapted for a scaffold |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/580,327 US20110088973A1 (en) | 2009-10-16 | 2009-10-16 | Ladder apparatus adapted for a scaffold |
Publications (1)
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US20110088973A1 true US20110088973A1 (en) | 2011-04-21 |
Family
ID=43878440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/580,327 Abandoned US20110088973A1 (en) | 2009-10-16 | 2009-10-16 | Ladder apparatus adapted for a scaffold |
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US (1) | US20110088973A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100089697A1 (en) * | 2007-04-18 | 2010-04-15 | Wilhelm Layher Verwaltungs-Gmbh | Prop for a three-dimensional framework, connecting assembly for a railing device, and method for attaching a railing device to a prop |
CN103924519A (en) * | 2014-04-11 | 2014-07-16 | 邹仁才 | Banana-type bridge construction safety ladder |
CN104563483A (en) * | 2014-12-25 | 2015-04-29 | 南通四建集团有限公司 | Standard steel stairway passage for basements and construction method of standard steel stairway passage |
US20200270107A1 (en) * | 2019-02-26 | 2020-08-27 | Hhi Corporation | Adjustable aircraft maintenance stand |
US10837230B1 (en) * | 2016-07-29 | 2020-11-17 | Johnny Curtis | Ladder hoop |
US20200407984A1 (en) * | 2018-03-12 | 2020-12-31 | Peri Gmbh | Scaffold stairway having step holders |
US20220235562A1 (en) * | 2021-01-26 | 2022-07-28 | Commercial Scaffolding Companies, Inc. | Scaffolding stair system |
US20220408916A1 (en) * | 2019-11-25 | 2022-12-29 | Vitra Ag | Crossmember, crossmember set, and furniture kit |
US20230013163A1 (en) * | 2019-11-25 | 2023-01-19 | Vitra Ag | Cross brace and modular furniture |
Citations (4)
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US3454131A (en) * | 1968-01-26 | 1969-07-08 | Up Right Inc | Scaffold |
US6691828B1 (en) * | 2000-11-08 | 2004-02-17 | Deltak Manufacturing, Inc. | Scaffold stair |
TWM248839U (en) * | 2004-01-07 | 2004-11-01 | Sucoot Ind Co Ltd | Security fastener used in scaffold ladder or similar device |
US20100224447A1 (en) * | 2009-03-06 | 2010-09-09 | Athos Construction Products, Inc. | Integrated plank and toeboard system |
-
2009
- 2009-10-16 US US12/580,327 patent/US20110088973A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3454131A (en) * | 1968-01-26 | 1969-07-08 | Up Right Inc | Scaffold |
US6691828B1 (en) * | 2000-11-08 | 2004-02-17 | Deltak Manufacturing, Inc. | Scaffold stair |
TWM248839U (en) * | 2004-01-07 | 2004-11-01 | Sucoot Ind Co Ltd | Security fastener used in scaffold ladder or similar device |
US20100224447A1 (en) * | 2009-03-06 | 2010-09-09 | Athos Construction Products, Inc. | Integrated plank and toeboard system |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100089697A1 (en) * | 2007-04-18 | 2010-04-15 | Wilhelm Layher Verwaltungs-Gmbh | Prop for a three-dimensional framework, connecting assembly for a railing device, and method for attaching a railing device to a prop |
US8931594B2 (en) * | 2007-04-18 | 2015-01-13 | Wilhelm Layher Verwaltungs-Gmbh | Prop for a three-dimensional framework, connecting assembly for a railing device, and method for attaching a railing device to a prop |
CN103924519A (en) * | 2014-04-11 | 2014-07-16 | 邹仁才 | Banana-type bridge construction safety ladder |
CN104563483A (en) * | 2014-12-25 | 2015-04-29 | 南通四建集团有限公司 | Standard steel stairway passage for basements and construction method of standard steel stairway passage |
US10837230B1 (en) * | 2016-07-29 | 2020-11-17 | Johnny Curtis | Ladder hoop |
US20200407984A1 (en) * | 2018-03-12 | 2020-12-31 | Peri Gmbh | Scaffold stairway having step holders |
US20200270107A1 (en) * | 2019-02-26 | 2020-08-27 | Hhi Corporation | Adjustable aircraft maintenance stand |
US20220408916A1 (en) * | 2019-11-25 | 2022-12-29 | Vitra Ag | Crossmember, crossmember set, and furniture kit |
US20230013163A1 (en) * | 2019-11-25 | 2023-01-19 | Vitra Ag | Cross brace and modular furniture |
US11918109B2 (en) * | 2019-11-25 | 2024-03-05 | Vitra Ag | Crossmember, crossmember set, and furniture kit |
US20220235562A1 (en) * | 2021-01-26 | 2022-07-28 | Commercial Scaffolding Companies, Inc. | Scaffolding stair system |
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Legal Events
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AS | Assignment |
Owner name: SUCOOT INDUSTRIAL CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SHIH, LUNG CHING;REEL/FRAME:023381/0691 Effective date: 20091002 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |