US3610368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertically adjustable platform for scaffolding
Assignee: Individual
•
Filing: 1969-10-15
•
Granted: 1971-10-05
•
Expires: 1989-10-15
Abstract
Abstract A vertically adjustable work platform which may be easily attached to a conventional scaffolding or other similar supporting structure. The platform includes a spaced pair of supporting vertical trackways, each of which slidably mounts a platform bracket having a horizontal supporting member for supporting the platform therebetween and is preferably formed in sections of a length corresponding to the height of a scaffold section. A cable is releasably connected to the associated trackway, and a cable hoist is operatively connected to the cable and bracket for supporting and raising and lowering the bracket. A releasable safety brake is provided for each trackway and bracket, and includes a plurality of vertically spaced abutments positioned along the length of the trackway and a pivotal brake bar which is adapted to engage behind one of the abutments to preclude downward movement of the bracket along the trackway.
Inventors
- 👤 Harold R Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:36
CPC Classifications
E; E04; E04G; E04G1/00; E04G1/18; E04G1/20
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
224 words
In a sectional scaffold for supporting workmen and materials adjacent a work area compRising a plurality of substantially identical sections each comprising spaced uprights and at least one connecting member therebetween and some of which are adapted to be placed in parallel, upright relation to form a first level and others of which are adapted to be superposed above corresponding ones of the first and succeeding levels, and connecting braces extending between the sections of each level adjacent the uprights thereof; the improvement which comprises means for freely moving workmen and materials vertically relative to said scaffold sections without obstruction by said connecting braces and without the necessity of removing said braces, said means comprising means carried by one side of said scaffold sections adjacent the work area and defining at least two vertically extending trackways spaced outwardly of said connecting braces, platform means for supporting workmen and materials and comprising at least two platform brackets and a supporting platform extending between and carried by said brackets, means mounting said brackets on said trackways with said brackets and platform disposed outwardly of said connecting braces for free, unobstructed vertical movement of said platform means relative to said scaffold sections, and means operatively connected between said trackways adjacent the upper ends thereof and said platform brackets for moving said platform means vertically along said trackways.
Claim 2
Dependent Claim
224 words
In a sectional scaffold for supporting workmen and materials adjacent a work area compRising a plurality of substantially identical sections each comprising spaced uprights and at least one connecting member therebetween and some of which are adapted to be placed in parallel, upright relation to form a first level and others of which are adapted to be superposed above corresponding ones of the first and succeeding levels, and connecting braces extending between the sections of each level adjacent the uprights thereof; the improvement which comprises means for freely moving workmen and materials vertically relative to said scaffold sections without obstruction by said connecting braces and without the necessity of removing said braces, said means comprising means carried by one side of said scaffold sections adjacent the work area and defining at least two vertically extending trackways spaced outwardly of said connecting braces, platform means for supporting workmen and materials and comprising at least two platform brackets and a supporting platform extending between and carried by said brackets, means mounting said brackets on said trackways with said brackets and platform disposed outwardly of said connecting braces for free, unobstructed vertical movement of said platform means relative to said scaffold sections, and means operatively connected between said trackways adjacent the upper ends thereof and said platform brackets for moving said platform means vertically along said trackways.
Claim 3
Dependent Claim
57 words
The sectional scaffold as defined claim 1 further comprising releasable brake means comprising a plurality of vertically spaced abutments fixedly mounted along each of said trackways, and a brake bar pivotally attached to each of said platform brackets and adapted to engage behind one of said abutments to preclude downward movement of said brackets along said trackways.
Claim 4
Dependent Claim
42 words
The sectional scaffold as defined in claim 2 wherein said brake bar includes a forward arm directed diagonally downward toward said abutments and a rear arm directed away from said abutments, said forward arm being biased upwardly into engagement with said abutments.
Claim 5
Dependent Claim
61 words
The sectional scaffold as defined in claim 1 wherein said means for moving said platform means comprises a pair of cable hoists connected to said platform brackets and each including a cable and a cable hook carried by the upper end of said cable, and a clip fixedly mounted on each of said trackways and being releasably engaged by said clip.
Claim 6
Dependent Claim
21 words
The sectional scaffold as defined in claim 1 including means releasably connecting said trackways to one side of said scaffold sections.
Claim 7
Dependent Claim
46 words
The sectional scaffold as defined in claim 5 wherein said trackway connecting means includes at least a pair of U-shaped brackets surrounding three sides of one upright of said scaffold sections and bolts mounted in said brackets and extending across the fourth side of said upright.
Claim 8
Dependent Claim
37 words
The sectional scaffold as defined in claim 1 wherein each of said platform brackets includes an outwardly extending horizontal support member, and said supporting platform includes an end connecting bracket overlying and substantially surrounding each support member.
Claim 9
Dependent Claim
32 words
The sectional scaffold as defined in claim 1 wherein each of said trackways comprises a plurality of vertically aligned track sections substantially corresponding in height to the height of a scaffold section.
Claim 10
Dependent Claim
62 words
The sectional scaffold as defined in claim 1 wherein each of said trackways comprises an I-beam having spaced flanges and a connecting web defining oppositely facing U-shaped channels, and said means mounting said brackets on said trackways comprises a pair of wheels, one of said pair being disposed in each of said channels for engagement with at least one of said flanges.
Claim 11
Dependent Claim
56 words
The sectional scaffold as defined in claim 9 wherein a horizontally extending member is attached to said bracket immediately above each of said wheels, said members partially entering the associated channel and serving to prevent debris from falling on the wheel and to precludE lateral movement of the bracket if one of the wheels should break.
Claim 12
Dependent Claim
73 words
The sectional scaffold as defined in claim 1 wherein each of said trackways comprises an I-beam having spaced flanges and a connecting web defining oppositely facing U-shaped channels, and said means mounting said brackets comprises two vertically spaced pairs of wheels, the wheels of each pair being rotatable about a common horizontal axis with one wheel being disposed in each of said U-shaped channels for engagement with at least one of said flanges.
Claim 13
Dependent Claim
53 words
The sectional scaffold as defined in claim 1 including a protective canopy overlying said platform means for protecting workmen and materials from the elements, said canopy extending outwardly beyond said platform means and adapted to overly the work area, and means removably mounting said canopy on said platform brackets for vertical movement therewith.
Claim 14
Dependent Claim
103 words
A platform for use with a sectional scaffold having upright sections and connecting braces extending between the sections for moving workmen and materials vertically relative to a work area, said platform comprising a pair of spaced apart vertically extending trackways adapted to be connected to one side of two sections of the sectional scaffold outwardly of the connecting braces and each comprising a plurality of track sections each corresponding in length to the height of a scaffold section, platform means for supporting workmen and materials and comprising a pair of platform brackets and a supporting platform extending between and carried by said brackets,
Claim 15
Dependent Claim
103 words
A platform for use with a sectional scaffold having upright sections and connecting braces extending between the sections for moving workmen and materials vertically relative to a work area, said platform comprising a pair of spaced apart vertically extending trackways adapted to be connected to one side of two sections of the sectional scaffold outwardly of the connecting braces and each comprising a plurality of track sections each corresponding in length to the height of a scaffold section, platform means for supporting workmen and materials and comprising a pair of platform brackets and a supporting platform extending between and carried by said brackets,
Claim 16
Dependent Claim
64 words
The platform as defined in claim 13 wherein a clip is fixedly mounted at the top of each of said track sections, and said means for moving said platform means includes a cable hoist connected to each of said brackets and including a cable and cable hook carried by the outer end of the cable, said cable hook being releasably engaged by said clip.
Claim 17
Dependent Claim
61 words
The platform as defined in claim 13 wherein each of said trackways comprises an I-beam having spaced flanges and a connecting web defining oppositely facing U-shaped channels, and said means mounting said brackets on said trackways comprises a pair of wheels, one of said pair being disposed on each of said channels for engagement with at least one of said flanges.
Claim 18
Dependent Claim
58 words
The platform as defined in claim 15 further comprising releasable brake means comprising a plurality of vertically spaced abutments fixedly mounted on one of said trackway flanges, and a brake bar pivotally attached to each of said platform brackets and adapted to engage behind one of said abutments to preclude downward movement of said brackets along said trackways.
Claim 19
Dependent Claim
190 words
A platform for use with a sectional scaffold having upright sections and connecting braces extending between the sections for moving workmen and materials vertically relative to a work area, said platform comprising, a pair of spaced apart vertically extending trackways adapted to be connected to one side of two sections of the sectional scaffold outwardly of the connecting bases, each of said trackways comprising an I-beam having spaced flanges and a connecting web defining oppositely facing U-shaped channels, platform means for supporting workmen and materials and comprising a pair of platform brackets and a supporting platform extending between and carried by said brackets, means mounting said brackets on said trackways for free, unobstructed vertical movement of said platform means relative to the scaffold, said means comprising a pair of wheels carried by each of said brackets, one of said pair being disposed in each of said U-shaped channels for engagement with at least one of said flanges, means for moving said platform means vertically along said trackways, and releasable brake means operatively connected between said brackets and said trackways for normally precluding downward movement of said brackets along said trackways.
Claim 20
Dependent Claim
190 words
A platform for use with a sectional scaffold having upright sections and connecting braces extending between the sections for moving workmen and materials vertically relative to a work area, said platform comprising, a pair of spaced apart vertically extending trackways adapted to be connected to one side of two sections of the sectional scaffold outwardly of the connecting bases, each of said trackways comprising an I-beam having spaced flanges and a connecting web defining oppositely facing U-shaped channels, platform means for supporting workmen and materials and comprising a pair of platform brackets and a supporting platform extending between and carried by said brackets, means mounting said brackets on said trackways for free, unobstructed vertical movement of said platform means relative to the scaffold, said means comprising a pair of wheels carried by each of said brackets, one of said pair being disposed in each of said U-shaped channels for engagement with at least one of said flanges, means for moving said platform means vertically along said trackways, and releasable brake means operatively connected between said brackets and said trackways for normally precluding downward movement of said brackets along said trackways.
Claim 21
Dependent Claim
101 words
A vertically adjustable platform support comprising a vertical trackway comprising a plurality of track sections arranged in longitudinal alignment, a platform bracket, means for slidably attaching said bracket to said trackway to permit relative vertical movement therebetween, cable means operatively connected between the top of one of said sections of said trackway and said platform bracket for supporting said bracket at a selected height, hoist means for varying the effective length of said cable means to lift or lower said bracket, and releasable brake means adapted to directly engage said trackway for preventing downward movement of said bracket along said trackway.
Claim 22
Dependent Claim
101 words
A vertically adjustable platform support comprising a vertical trackway comprising a plurality of track sections arranged in longitudinal alignment, a platform bracket, means for slidably attaching said bracket to said trackway to permit relative vertical movement therebetween, cable means operatively connected between the top of one of said sections of said trackway and said platform bracket for supporting said bracket at a selected height, hoist means for varying the effective length of said cable means to lift or lower said bracket, and releasable brake means adapted to directly engage said trackway for preventing downward movement of said bracket along said trackway.
Claim 23
Dependent Claim
55 words
The platform support as defined in claim 18 wherein said brake means comprises a plurality of vertically spaced abutments fixedly mounted along the length of said trackway, and a brake bar pivotally attached to said bracket and adapted to engage behind one of said abutments to preclude downward movement of said bracket along said trackway.
Claim 24
Dependent Claim
39 words
The platform support as defined in claim 18 wherein said cable means comprises a clip fixedly mounted on said trackway, a cable hook releasably engaging said clip, and a cable connected between said cable hook and said platform bracket.
Claim 25
Dependent Claim
62 words
The platform support as defined in claim 18 wherein said trackway has a pair of oppositely directed U-shaped channels extending along the height thereof, and said means for slidably attaching said bracket to said beam includes a pair of rotatable wheels attached to said bracket, one of said pair being disposed in each of said channels for engagement with the walls thereof.
Claim 26
Dependent Claim
47 words
The platform support as defined in claim 21 wherein a horizontally extending member is attached to said bracket immediately above each of said wheels, said member partially entering the associated channel and serving to preclude lateral movement of the bracket if one of the wheels should break.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |