| Patents for E04G 27 - Temporary arrangements for giving access from one level to another for men or vehicles, e.g. steps, ramps (293) |
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| 05/09/2007 | CN1959035A Work saving device for object to go up or down steps of staircase |
| 05/03/2007 | WO2007048204A1 Slope compensator for pedestal for elevated floors |
| 04/19/2007 | CA2523292A1 Ez walk temporary walkway system |
| 04/11/2007 | EP1772570A1 Stairway convertible into a walkway |
| 03/14/2007 | EP1761675A2 Modular multilevel access platform and method for erecting the same |
| 03/14/2007 | CN2878589Y Tilting ladder for pushing carriage upstairs |
| 02/22/2007 | DE202006014768U1 Driving support ramp for road kerb, has upper edge with height same as road kerb, which is to be over-ridden, where entire slant of ramp is provided with continuous grooving |
| 01/16/2007 | US7162760 Methods and apparatus for a step mounting system |
| 01/04/2007 | DE102005028885A1 Treppe Staircase |
| 11/23/2006 | US20060260238 Refinement to the construction systems for structures in reinforced concrete or some other material of high-precision intergral modular forms |
| 11/02/2006 | WO2005118980A3 Modular multilevel access platform and method for erecting the same |
| 07/27/2006 | WO2006078174A1 Device for a gangway |
| 07/13/2006 | DE102005031509A1 Walk-on platform for vehicle assembly lines is mounted alongside vehicle body conveyor belt and is vertically adjustable comprising several segments fixed against one another |
| 07/05/2006 | CN2793222Y Trestle bridge for connecting production workshop with outside road |
| 03/23/2006 | US20060059636 Modular platform, walkway or ramp |
| 01/19/2006 | DE202005005831U1 Neigungseinstellbare Aufstiegshilfe Adjustable tilt ascent Help |
| 12/15/2005 | WO2005118980A2 Modular multilevel access platform and method for erecting the same |
| 12/15/2005 | CA2567141A1 Modular multilevel access platform and method for erecting the same |
| 12/01/2005 | US20050263351 Modular multilevel access platform and method for erecting the same |
| 11/24/2005 | WO2005111340A1 Safety plank device |
| 09/14/2005 | CN1219142C Folding draw-pull type stone ramp on border of road |
| 06/21/2005 | US6907957 Trench shield ladder |
| 06/15/2005 | EP1540109A1 Modular platform, walkway or ramp |
| 05/25/2005 | CN2701982Y Inversely dismantled foundation pit berm |
| 01/13/2005 | US20050006174 Locking and removable step |
| 12/29/2004 | CN2667083Y Steel pipe scaffold movable assembling slop steps board |
| 12/23/2004 | US20040255406 Methods and apparatus for a step mounting system |
| 11/23/2004 | CA2223223C Flooring adapter transition device |
| 09/09/2004 | DE10307087A1 Transverse stairs for temporary use in building, has supporting extensions that may be adjusted in length, and which have extension ends inserted into recesses on walls |
| 08/19/2004 | DE20310794U1 Stair kit as reusable construction stairs in fashion of spiral staircase has tube section element installed on each individual step element and constructed as plug-in element for forming of central column |
| 07/07/2004 | CN1510235A Environment protecting assembled multifunctional plates |
| 06/22/2004 | US6752243 Locking and removable step |
| 05/20/2004 | US20040093817 Refinements to the construction systems for structures in reinforced concrete or some other material by means of high-precision integral modular forms |
| 01/08/2004 | WO2004003312A1 Modular platform, walkway or ramp |
| 12/18/2003 | US20030229954 Ramp kit |
| 12/18/2003 | CA2428809A1 Ramp kit |
| 09/12/2003 | WO2003074819A1 A staircase for a crew's container |
| 09/10/2003 | CN2571921Y Ramp for car through sentry box |
| 06/26/2003 | DE20305795U1 Method for access to container accommodation units with a modular assembly framework with platform and steps |
| 05/08/2003 | DE20302752U1 Temporary staircase for housing construction rests on building inner walls |
| 05/07/2003 | CN1415827A Folding draw-pull type stone ramp on border of road |
| 04/24/2003 | DE10150461C1 Freitragende Mittelholm-Treppe Self-supporting staircase with central stringer |
| 04/23/2003 | EP1304424A1 Overhanging stair with a central stringer and with stair elements adjustable in height |
| 10/02/2002 | EP1245757A2 Stair tower for building shell |
| 04/25/2002 | US20020046543 Roof step system |
| 04/11/2002 | DE10059960C1 Re-usable temporary staircase for building construction has tread carriers for tread surfaces fitted to vertical carrier element in different angular positions |
| 09/12/2001 | CN2447468Y Step |
| 07/06/2001 | CA2330371A1 Roof step system |
| 01/04/2000 | US6009586 Truss and panel system for access ramps |
| 11/23/1999 | CA2158199C Scaffolding plank |
| 03/11/1999 | DE19738809A1 Stairs construction ladder replacement on building sites |
| 06/17/1998 | CN2284271Y Airer type emergency life-saving mobile ladder |
| 01/21/1998 | CN2272768Y Climbing apparatus |
| 11/05/1997 | CN2266582Y Gear rack type elevator |
| 09/30/1997 | US5671496 Portable wheel chair ramp |
| 09/17/1997 | EP0646209B1 Portable wheel chair ramp |
| 01/22/1997 | CN2245643Y Movable building gangway support |
| 01/15/1997 | EP0753645A1 Auxiliary device for working on inclined grounds |
| 01/08/1997 | CN2244546Y Self-lifting guide support adding device for construction elevator cage |
| 09/26/1996 | DE19609279A1 Temporary and re=usable staircase between floors |
| 07/10/1996 | EP0670947B1 Gangway for crossing obstacles |
| 04/17/1996 | CN2224828Y Sliding-rail conveyer for transporting articles on stairway |
| 11/08/1995 | CN2212037Y Mulitfunction high speed wellhead by hydraulic lift |
| 09/13/1995 | EP0670947A1 Gangway for crossing obstacles. |
| 08/09/1995 | EP0646209A4 Portable wheel chair ramp. |
| 04/05/1995 | EP0646209A1 Portable wheel chair ramp. |
| 03/29/1995 | CN1028047C Landing platform and overhead protector for construction site |
| 09/27/1994 | US5349795 Width-adjustable stairway step tread and method for constructing a stairway therewith |
| 08/31/1994 | EP0612678A1 Mobile inclined ramp |
| 08/25/1994 | DE4305590A1 Frame for receiving the bridge plate of a transfer bridge |
| 06/09/1994 | WO1994012745A1 Gangway for crossing obstacles |
| 03/17/1994 | WO1994005878A1 Transportable ramp |
| 01/05/1994 | EP0577004A1 Anchoring device |
| 12/23/1993 | WO1993025781A1 Portable wheel chair ramp |
| 10/07/1993 | CA2065163A1 Kn air-way-traffic |
| 09/01/1993 | EP0557837A1 Construction set for staircases |
| 03/25/1993 | DE4131349A1 Portable steps for fixing direct to soil - has steps arranged sequentially and spiked through on another to fix and anchor them to ground |
| 05/12/1992 | US5111908 Pipe step |
| 04/30/1992 | DE4034331A1 Staircase for use on building site - has individual steps supported on brackets nailed to wooden side members |
| 01/02/1992 | DE4019429A1 Stairway structure for building - comprises several cylindrical inflatable bodies of differing heights |
| 10/17/1991 | WO1991015642A1 Improvements relating to scaffolding |
| 04/03/1991 | CN1050425A Landing platform and overhead protector for construction site |
| 02/27/1991 | CN2072116U Combined lifting tower |
| 09/27/1990 | DE3909181A1 Stairway which is for temporary use in the carcass of a building |
| 01/03/1989 | CA1247834A1 Adjustable staircase |
| 08/17/1988 | CN87100654A Telescopic walking stilt device |
| 04/20/1988 | CN86107194A Foot pedal for post-climbing |
| 04/30/1986 | EP0179480A2 Scaffold-supporting structure for bridging a walkway or the like |
| 09/18/1984 | CA1174429A1 Elements to be assembled to form temporary stair |
| 07/03/1984 | US4457398 Elements to be assembled to form temporary stair |
| 09/13/1983 | US4403362 Bulk loading facility having a drop way |
| 08/16/1983 | CA1151819A1 Bulk loading facility having a drop way |
| 08/04/1982 | EP0057168A1 Assembling elements for provisional stairways |