Walk-through scaffolding construction
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United States of America Patent
Stats
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Jan 9, 1990
Grant Date -
N/A
app pub date -
Jan 12, 1989
filing date -
Jan 12, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved walk-through scaffolding frame is constructed of components which may be assembled together to form an erected frame and disassembled to pass through a narrow opening such as a manhole or some other narrow access opening to a larger enclosure. The improved walk-through scaffolding is constructed with a pair of generally triangular-shaped upright support members and a connecting crosspiece. The upright support members each define a single downwardly directed tubular leg as well as upwardly extending inner and outer support posts. The crosspiece includes downwardly directed connectors which telescopically engage both the inner and outer support posts of each of the pair of upright support members and an upwardly directed connector at its outer extremity for engaging a downwardly directed leg of another walk-through frame located thereabove. The upright support members and the crosspiece may be quickly and easily disassembled without tools to pass through very narrow manhole-type openings and reassembled without tools to erect scaffolding.

First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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ALLENBAUGH DWIGHT | Not Provided |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Allenbaugh, Dwight | 7520 Monroe St., Paramount, CA 90723 | 3 | 86 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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