Patent US5033240A successfully refreshed from Google Patents.
US5033240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus to enshroud large vertical structures
Assignee: K & L MANUFACTURING Ltd
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Filing: 1990-06-01
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Granted: 1991-07-23
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Expires: 2010-06-01
Abstract
Abstract Apparatus to temporarily enclose multi-story structures such as municipal water towers during sandblasting and painting to thereby contain the debris and overspray from the environment. A plurality of booms extending in an array outwardly from the top of the structure are temporarily attached to the structure. Hoisting and guide cables extend downwardly from the ends of the booms out beyond the outermost periphery of the structure. A plurality of fabric or plastic panels are supported on a framework in turn attached to guides on the guide cables and the guides are attached to the hoisting cables. The guide cables are anchored to ground. The hoisting cables are connected to a common hoisting engine. The entire assembly of panels can be raised in unison about the structure for daily activities and then lowered at night or quickly lowered in the event of high winds.
Inventors
- 👤 Louis J. Richard
- 👤 Kenneth M. Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:46
CPC Classifications
B; B08; B08B; B08B17/00; B08B17/02; B05; B05B; B05B16/00; B05B16/40; B08B17/025; Y; Y10; Y10S; Y10S52/00; Y10S52/12
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
168 words
Apparatus to temporarily enclose multi-story structures comprising a plurality of booms extending outwardly about at least a portion of the structure adjacent the top of the structure, said booms extending beyond the periphery of the structure, a sheave attached at the outboard end of each boom and a vertically extending hoisting cable supported by each sheave to form a plurality of downwardly extending hoisting cables, a plurality of flexible panels, means on the panels to attach the panels together to form a panel assembly and means to attach the panel assembly to the plurality of downwardly extending hoisting cables whereby upon raising the hoisting cables substantially simultaneously, the panel assembly forms an enclosure about at least a portion of the structure. guide cables each attached to the outboard ends of the booms, said guide cables extending downwardly to anchorage means, said anchorage means located at the bottom of the enclosure, and guide means on said panel assemblies, said guide means in engagement with the plurality of guide cables.
Claim 2
Dependent Claim
168 words
Apparatus to temporarily enclose multi-story structures comprising a plurality of booms extending outwardly about at least a portion of the structure adjacent the top of the structure, said booms extending beyond the periphery of the structure, a sheave attached at the outboard end of each boom and a vertically extending hoisting cable supported by each sheave to form a plurality of downwardly extending hoisting cables, a plurality of flexible panels, means on the panels to attach the panels together to form a panel assembly and means to attach the panel assembly to the plurality of downwardly extending hoisting cables whereby upon raising the hoisting cables substantially simultaneously, the panel assembly forms an enclosure about at least a portion of the structure. guide cables each attached to the outboard ends of the booms, said guide cables extending downwardly to anchorage means, said anchorage means located at the bottom of the enclosure, and guide means on said panel assemblies, said guide means in engagement with the plurality of guide cables.
Claim 3
Dependent Claim
32 words
The apparatus of claim 1 including a central support attached to each boom, the inward end of each boom and lower end of each central support being temporarily attachable to the structure.
Claim 4
Dependent Claim
26 words
The apparatus of claim 2 including at least one stabilizer attached to each boom, the lower end of each stabilizer being temporarily attachable to the structure.
Claim 5
Dependent Claim
46 words
The apparatus of claim 3 wherein the attachments of the boom, central support and stabilizer to the structure comprise pads temporarily weldable to the structure and rotatably free means to attach the pads to the boom inboard end and the central support and stabilizer lower ends.
Claim 6
Dependent Claim
56 words
The apparatus of claim 3 wherein the attachments of the boom, central support and stabilizer to the structure comprise brackets permanently attached to the structure and pads temporarily attachable to the brackets with mechanical fasteners, and rotatably free means to attach the pads to the boom inboard end and the central support and stabilizer lower ends.
Claim 7
Dependent Claim
26 words
The apparatus of claim 3 wherein the attachment of the central support to the boom includes translational adjustability of the boom relative to the central support.
Claim 8
Dependent Claim
24 words
The apparatus of claim 6 wherein the attachment of the stabilizer to the boom includes translational adjustability of the boom relative to the stabilizer.
Claim 9
Dependent Claim
32 words
The apparatus of claim 6 wherein the attachment of the central support to the boom and the attachment of the stabilizer to the boom both include rotational freedom relative to the boom.
Claim 10
Dependent Claim
17 words
The apparatus of claim 8 wherein the attachment of the stabilizer to the boom includes a trunnion.
Claim 11
Dependent Claim
43 words
The apparatus of claim 1 including a plate, a central hole in said plate and a plurality of sheaves attached to said plate, said sheaves so located on the plate as to guide hoisting cables over said sheaves and through said central hole.
Claim 12
Dependent Claim
29 words
The apparatus of claim 10 including means on said plate to attach tie back cables and a plurality of tie back cables extending from the booms to said plate.
Claim 13
Dependent Claim
31 words
The apparatus of claim 10 wherein said hoisting cables are jointed together below said central hole and wherein a single cable attached to said hoisting cables extends to a hoisting engine.
Claim 14
Dependent Claim
20 words
The apparatus of claim 10 wherein said plate includes means to attach the plate to the top of the structure.
Claim 15
Dependent Claim
37 words
The apparatus of claim 1 wherein said panel assemblies comprise horizontal members that extend between guide means on adjacent guide cables and a plurality of attachments on said horizontal members from which hang the individual flexible panels.
Claim 16
Dependent Claim
21 words
The apparatus of claim 14 wherein said horizontal members include telescoping means to adjust the member length between adjacent guides cables.
Claim 17
Dependent Claim
21 words
The apparatus of claim 14 wherein the means to attach the panel assemblies to the hoisting cables comprises the guide means.
Claim 18
Dependent Claim
16 words
The apparatus of claim 16 wherein the guide means comprise tubular sleeves engaging the guide cables.
Claim 19
Dependent Claim
35 words
The apparatus of claim 14 wherein adjacent panels are joined together by a plurality of fastening means along the vertical edges of the panels and individual panels extend the full height of the raised enclosure.
Claim 20
Dependent Claim
42 words
The apparatus of claim 1 wherein a short cable and block are suspended from the boom outboard end sheave and the hoisting cable extends downwardly from both sides of the block, one end of each hoisting cable extending to a hoisting engine.
References Cited (Backward Citations)
US1759628A
Cited
US3945106A
Cited
JPS5231546A
Cited
US4522010A
Cited
US4794974A
Cited
US4787173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-22 | 1995-01-21 | 1995-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-22 | 1999-01-21 | 1999-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-22 | 2003-01-21 | 2003-07-23 | $7700.00 | Window Closed / Lapsed |