| Patents for E04G 3 - Scaffolds essentially supported by building constructions, e.g. adjustable in height (4,845) |
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| 01/05/1994 | DE4238675C1 Work platform for attachment to HV overhead cable pylon - has two=part bolted construction and box section for enclosing corner pillar of pylon to afford access to horizontal tread-plate surface |
| 12/29/1993 | CN1080011A Built-up compounded floorslab and its surport frame |
| 12/22/1993 | EP0574817A1 Device for suspending a working cage |
| 12/09/1993 | DE4220821C1 Work basket accommodating personnel working at heights and depths - has accessible platform surrounded by framework and at least one retention frame on long side of platform |
| 11/11/1993 | WO1993022529A1 Transport system |
| 11/11/1993 | WO1993022063A1 Remote-controlled system for treating external surfaces of buildings |
| 11/11/1993 | DE4308713A1 Accommodation equipment |
| 11/11/1993 | CA2135308A1 Transport system |
| 10/05/1993 | US5249397 Knockdown roof platform for use on an inclined roof |
| 09/14/1993 | US5244057 Portable scaffold |
| 09/07/1993 | US5242029 Poolside descending scaffold |
| 08/31/1993 | US5240503 Remote-controlled system for treating external surfaces of buildings |
| 08/12/1993 | DE4218528C1 Roof-mounted hoist for building with chimney - has uprights on top of wall joined by struts to anchoring component extending down chimney to building ceiling |
| 07/27/1993 | US5230404 Erection scaffolding which is movable in an elevator shaft for the mounting of shaft equipment |
| 06/23/1993 | EP0547792A1 Suspended platform |
| 05/27/1993 | DE4138412A1 Machine for cleaning external facade of tall building - has cradle which can be held in any required position on carriage |
| 05/19/1993 | EP0541951A1 Apparatus for cleaning the outer surfaces of buildings |
| 05/19/1993 | CN1072233A Work platform system for multi-storey buildings |
| 05/06/1993 | DE4135738A1 Roof-mounted frame - has bottom members hinging on scissor arms fitting over ridge and lockable |
| 04/29/1993 | WO1993008349A1 Device with carriage for inspecting a vertical or inclined wall |
| 04/20/1993 | US5203426 Portable window perch assembly |
| 04/01/1993 | DE4131022A1 Support for work platform on inclined roofs - has linked framework held together by adjustable and lockable section to provide work platform for temporary roof work |
| 01/07/1993 | DE4122298A1 Security barrier for work on flat roofs - is based on space frame girders counterweighted and supported on wheels to allow barrier to move along roofing edge |
| 12/22/1992 | CA1311784C2 Apparatus for affixing a scaffolding member to a structure |
| 12/10/1992 | WO1992021838A1 Work platform system for multi-storey buildings |
| 12/10/1992 | CA2110183A1 Work platform system for multi-storey buildings |
| 11/26/1992 | WO1992020877A1 Method and devices for constructing rotating buildings |
| 11/19/1992 | EP0513846A2 Scaffolding |
| 11/19/1992 | EP0513489A1 Stackable scaffolding frames |
| 11/10/1992 | CA1310041C Scaffolding |
| 11/05/1992 | DE4114328A1 Bracket-frame suspension system from wall - has intermediate component with hook mounted at different heights |
| 10/20/1992 | US5156235 Set-up bracket for scaffolding |
| 10/06/1992 | US5152369 Apparatus and method for hoisting a platform adjacent a scaffolding |
| 09/22/1992 | US5148890 Portable utility platform unit |
| 09/16/1992 | CN2116044U Mobile foldable scaffold |
| 09/08/1992 | US5145032 Mason's scaffold |
| 09/02/1992 | EP0501140A1 Erecting scaffold moveable along an elevator shaft for erecting shaft equipment |
| 09/02/1992 | CA2060812A1 Erection scaffolding which is movable in a lift shaft for the mounting of shaft equipment |
| 09/01/1992 | US5143170 Safety device for roof work |
| 08/27/1992 | DE4104158C1 Vertical load hoisting mechanism on buildings - has guy and load ropes integrated into compound rope, which is loosely supported |
| 08/12/1992 | EP0497861A1 Hanging scaffold. |
| 08/04/1992 | US5135078 Portable support system for suspending persons from buildings |
| 08/04/1992 | US5134941 Rotary device for guiding a suspended gondola along a vertical cable |
| 07/16/1992 | CA2059413A1 Portable support system for suspending persons from buildings |
| 07/07/1992 | US5127492 Scaffolding |
| 06/23/1992 | CA1304109C Hydraulic scaffolding |
| 05/26/1992 | US5115886 Movable platform for construction sites |
| 05/26/1992 | CA1301814C Modular scaffolding system and connecting joints therefor |
| 05/20/1992 | EP0486126A2 Mason's scaffold |
| 05/19/1992 | US5113971 Adjustable roofing jack |
| 05/05/1992 | US5109957 Offshore access systems |
| 04/30/1992 | DE4034229A1 Scaffolding for mounting on sloping roof - is supported on pairs of beams which are pivoted together at upper ends |
| 04/28/1992 | US5107959 Knock-down base for platforms |
| 04/21/1992 | CA1299222C Movable cradle |
| 04/15/1992 | EP0480683A1 Erection workbench and construction process |
| 04/08/1992 | CN2101067U Outside hanging lifting scaffold |
| 03/19/1992 | WO1992004516A1 Improved clamp and mounting arrangement |
| 02/25/1992 | CA1296372C Mobile outrigger for suspending scaffold |
| 01/09/1992 | WO1992000423A1 An access platform |
| 01/02/1992 | EP0463709A2 Cradle and method for running along a building-façade |
| 12/24/1991 | US5074382 Offshore access systems |
| 12/05/1991 | DE4017311A1 Erection of roof scaffolding - involves fixture for attachment to roof joist and connected rod-form scaffolding component retainer |
| 11/26/1991 | US5067586 Safety guard apparatus |
| 11/26/1991 | CA1292489C Mobile suspended scaffold |
| 11/19/1991 | US5065838 Movable support for window washers and the like |
| 10/03/1991 | WO1991014840A1 A roofer's safety aid |
| 09/24/1991 | US5050705 Roof creeper kit apparatus |
| 09/17/1991 | US5048640 Work platform supported by structural beams |
| 08/21/1991 | EP0362246B1 Device for transporting and distributing materials and/or equipment at the periphery of a building |
| 07/24/1991 | EP0378624A4 Scaffolding |
| 07/05/1991 | CA2025679A1 Debris net/scaffolding frame lifting system |
| 07/02/1991 | US5027921 Method and device for transporting and distributing materials and/or equipment around the periphery of a building |
| 05/23/1991 | DE4038755A1 Hook for securing scaffolding to sloping roof - is welded to bolt which screws into tube fixed in rafter |
| 05/16/1991 | WO1991006729A1 Hanging scaffold |
| 04/30/1991 | US5011710 Surfaces treated from a walkway within an enclosure suspended from the structure |
| 04/18/1991 | DE3933865A1 Internal access or inspection platform - is for large cylindrical vessel and is formed from inflatable ring shaped tubes |
| 04/16/1991 | US5007501 Apparatus for facilitating the internal inspection and repair of large pressure vessels |
| 03/27/1991 | EP0419250A2 A construction landing platform for installation in a building under construction |
| 03/21/1991 | CA2025886A1 Landing platform and overhead protector for a construction site |
| 03/05/1991 | US4997062 Swing scaffold |
| 02/20/1991 | EP0413510A1 Apparatus for use in fitting roofing sheets |
| 02/07/1991 | DE3925518A1 Walkway attached to outside wall of building - can be positioned at any required height using bracket structure |
| 01/29/1991 | US4987971 Arrangement in hanging cradles |
| 01/15/1991 | US4984654 Scaffold safety system |
| 01/10/1991 | DE3920806A1 Transportable work platform for shaft inspection - can pass through small opening and then be extended to shaft wall by dropping hinged flaps |
| 01/01/1991 | US4981196 For use with a scaffolding platform |
| 12/25/1990 | US4979589 Work apparatus for a work on a wall surface |
| 12/14/1990 | CA2017978A1 Passageway for flying scaffoldings |
| 11/29/1990 | DE3917222A1 Platform for working on inclined surfaces - has system to hold platform level irrespective of angle of work surface |
| 11/28/1990 | EP0399215A1 Retractable column |
| 11/28/1990 | EP0385992A4 Offshore access systems |
| 11/20/1990 | US4971169 Method and apparatus for scaffolding |
| 11/06/1990 | US4967875 Modular scaffolding system and connecting joints therefor |
| 10/25/1990 | CA2014731A1 Retractable column |
| 10/10/1990 | EP0391779A1 Suspension device for hanging scaffolding |
| 10/02/1990 | US4960185 Movable cradle |
| 09/25/1990 | CA1274562A1 Swing scaffold |
| 09/18/1990 | US4957185 Roof scaffold |
| 09/12/1990 | EP0385992A1 Offshore access systems |
| 08/07/1990 | US4946123 Roof bracket |