Patent US5067587A successfully refreshed from Google Patents.
US5067587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Service platform for mobile scaffolding unit
Assignee: Individual
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Filing: 1990-12-28
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Granted: 1991-11-26
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Expires: 2010-12-28
Abstract
Abstract The mobile scaffolding unit has a tower, a work platform and a service platform. The work platform can be resupplied by the service platform so as to maintain the work platform at a working elevation. The work and service platforms are located on the vertically orientated tower. Each platform is provided with electric motors to propel the platforms along the tower. The service platform is located below the work platform. The work platform has hatches in its deck for receiving cargo. The hatches are covered with doors. Cargo is located on raised platforms on the deck of the service platform. The service platform then moves up the tower to a position immediately beneath the work platform. The cargo is received by the hatches on the work platform as the service platform moves up the tower, wherein when the service platform is immediately below the work platform, the cargo is at the same level as the work platform deck. The cargo is then moved onto the work platform deck.
Inventors
- 👤 William F. Mims, Jr.
- 👤 Richard T. Bramlett
- 👤 Kenneth G. Oatman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:08
CPC Classifications
E; E04; E04G; E04G5/00; B; B66; B66F; B66F11/00; B66F11/04; E04G1/00; E04G1/15; E04G1/18; E04G1/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
157 words
A mobile scaffolding unit, comprising: (a) tower means adapted to be vertically oriented when on location at a worksite, said tower means having securing means for securing said tower means in place at said worksite; b) a work platform mounted onto said tower means, said work platform having first motor means for moving said work platform along said tower means, said work platform having a deck that is adapted to support cargo and workers, said deck having hatch means therein for receiving cargo; c) a service platform mounted onto said tower means at a location beneath said work platform, said service platform having second motor means for moving said service platform along said tower means, said service platform having a deck adapted to support cargo, wherein said work platform can be resupplied by said service platform traversing said tower means and by loading cargo on said work platform through said hatch means from said service platform below.
Claim 2
Dependent Claim
157 words
A mobile scaffolding unit, comprising: (a) tower means adapted to be vertically oriented when on location at a worksite, said tower means having securing means for securing said tower means in place at said worksite; b) a work platform mounted onto said tower means, said work platform having first motor means for moving said work platform along said tower means, said work platform having a deck that is adapted to support cargo and workers, said deck having hatch means therein for receiving cargo; c) a service platform mounted onto said tower means at a location beneath said work platform, said service platform having second motor means for moving said service platform along said tower means, said service platform having a deck adapted to support cargo, wherein said work platform can be resupplied by said service platform traversing said tower means and by loading cargo on said work platform through said hatch means from said service platform below.
Claim 3
Dependent Claim
64 words
The mobile scaffolding unit of claim 1 further comprising elevating means for elevating cargo on said service platform above said service platform deck so that said cargo is at the same elevation as said work platform deck when said service platform is located immediately beneath said work platform, said elevating means being located on said service platform deck and aligned with said hatch means.
Claim 4
Dependent Claim
28 words
The mobile scaffolding unit of claim 2 wherein said elevating means comprises a raised platform located above said service platform and fixed scaffolding that supports said raised platform.
Claim 5
Dependent Claim
22 words
The mobile scaffolding unit of claim 3 wherein said hatch means comprises a door that is hinged to said work platform deck.
Claim 6
Dependent Claim
22 words
The mobile scaffolding unit of claim 1 wherein said hatch means comprises a door that is hinged to said work platform deck.
Claim 7
Dependent Claim
262 words
A mobile scaffolding unit, comprising: a) tower means adapted to be vertically oriented when on location at a worksite, said tower means having securing means for securing said tower means in place at said worksite; b) a work platform having a deck and a supporting truss beneath said deck, said work platform deck having an opening for receiving said tower means such that said work platform is mounted to said tower means, said work platform having first motor means for moving said work platform along said tower means, said work platform deck having a hatch opening and a hatch door for selectively closing said hatch opening, said work platform truss having a passageway therethrough beneath said hatch opening; c) a service platform having a deck and a supporting truss beneath said deck, said service platform mounted onto said tower means at a location beneath said work platform such that said service platform deck is located beneath said hatch opening, said service platform having second motor means for moving said service platform along said tower means; d) a fixed platform located on said service platform deck and being aligned with said hatch opening, said fixed platform having an elevation such that cargo loaded onto said fixed platform is at the same elevation as same work platform deck when said service platform is located immediately below said work platform, wherein said work platform can be resupplied by said service platform traversing said tower means and by loading cargo on said work platform through said hatch opening from said fixed platform and said service platform.
Claim 8
Dependent Claim
262 words
A mobile scaffolding unit, comprising: a) tower means adapted to be vertically oriented when on location at a worksite, said tower means having securing means for securing said tower means in place at said worksite; b) a work platform having a deck and a supporting truss beneath said deck, said work platform deck having an opening for receiving said tower means such that said work platform is mounted to said tower means, said work platform having first motor means for moving said work platform along said tower means, said work platform deck having a hatch opening and a hatch door for selectively closing said hatch opening, said work platform truss having a passageway therethrough beneath said hatch opening; c) a service platform having a deck and a supporting truss beneath said deck, said service platform mounted onto said tower means at a location beneath said work platform such that said service platform deck is located beneath said hatch opening, said service platform having second motor means for moving said service platform along said tower means; d) a fixed platform located on said service platform deck and being aligned with said hatch opening, said fixed platform having an elevation such that cargo loaded onto said fixed platform is at the same elevation as same work platform deck when said service platform is located immediately below said work platform, wherein said work platform can be resupplied by said service platform traversing said tower means and by loading cargo on said work platform through said hatch opening from said fixed platform and said service platform.
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) | 1994-11-25 | 1995-05-27 | 1995-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-25 | 1999-05-27 | 1999-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-25 | 2003-05-27 | 2003-11-26 | $7700.00 | Window Closed / Lapsed |