| Patents for E04G 21 - Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work (22,137) |
|---|
| 10/24/1989 | US4875569 Concrete delivery system |
| 10/24/1989 | US4875549 Debris barrier |
| 10/19/1989 | WO1989009863A1 Clamp for building structures |
| 10/18/1989 | EP0248061B1 Anchor bolt for concrete elements |
| 10/12/1989 | DE3810553A1 Sleeve element of a mounting anchor for prefabricated concrete compound units |
| 10/11/1989 | EP0336331A1 Installation for distributing concrete, in particular for tunneling |
| 10/11/1989 | CN2045765U Multipurpose buildings machine |
| 10/10/1989 | US4872634 Bracing for tilt-up wall panel |
| 10/04/1989 | CN2045411U Improved mud-stirring plate for building |
| 10/03/1989 | US4870741 Wall racking tool |
| 09/28/1989 | DE3808592A1 Concrete/screed covering with automatic watering |
| 09/27/1989 | EP0334554A1 Patterns for determining the profile of an arch |
| 09/27/1989 | CN2045009U Reusable wooden rod having elevation marks for building |
| 09/27/1989 | CN2045008U Immersion concrete vibrator with built-in motor |
| 09/26/1989 | US4869042 Retaining device |
| 09/26/1989 | CA1261138A1 Masonry tool |
| 09/21/1989 | WO1989008758A1 Variable set-up, reusable centering frame for use as movable and stationary equipment |
| 09/21/1989 | DE3808121A1 Manipulating appliance for gripping and moving objects |
| 09/19/1989 | US4866851 Building block guide with hand-cranked clamping means |
| 09/14/1989 | DE3827655C1 Process for keeping concrete surfaces moist, and a moisture-storing layer for carrying out the process |
| 09/14/1989 | DE3806759A1 Process for repairing a hollow-cylindrical structural body, in particular a chimney consisting of reinforced concrete, and set of structural elements for carrying out this process |
| 09/13/1989 | CN2044267U Multi-functional masons tool |
| 09/12/1989 | US4864792 Prefabricated modules, and the use thereof in the building industry |
| 09/12/1989 | CA1259202A1 Reinforcing rod holder for use in connection-type concreting operations |
| 09/07/1989 | DE3805743A1 Reinforcement-connection element and process for connecting the reinforcement of reinforced-concrete structural parts which are to be concreted one after the other |
| 09/05/1989 | US4862576 Method for restressing and locking HHL anchor |
| 09/05/1989 | CA1259063A1 Arrangement in containers intended to hold pumpable substances and provided with a pump herefor |
| 08/31/1989 | DE3805297A1 Reinforcement-connection element and process for connecting the reinforcement of reinforced-concrete structural parts which are to be concreted one after the other |
| 08/30/1989 | EP0225893B1 Process and device for constructing wall sections from building blocks |
| 08/23/1989 | CN1034971A Gas-pressure adjustable prestressing apparatus |
| 08/17/1989 | DE3803211A1 Safeguarding installation for preventing people from falling off the flat roof of buildings |
| 08/17/1989 | DE3546579C2 Anchor which consists of solid material and is intended for concreting into prefabricated concrete compound units or the like |
| 08/15/1989 | US4856616 Railing support clamp for scaffold |
| 08/15/1989 | US4856615 Safety net arrangement for multi-floor buildings under construction, and method |
| 08/15/1989 | US4856254 Method of placing steel tendons through ducts in a concrete structural member |
| 08/15/1989 | US4856238 Prefabricated part for constructing a building air-conditioned via its walls |
| 08/10/1989 | DE3901893A1 Concrete vibrator |
| 08/10/1989 | DE3816983A1 Reinforcement connection |
| 08/09/1989 | EP0327062A2 Method for applying spray concrete to walls, to surfaces in danger of collapsing or the like |
| 08/09/1989 | CN2042493U Multifunctional device of pouring, building and lime plastering for the wall body |
| 08/03/1989 | DE3802464A1 Apparatus for the limited covering of rafters and wooden claddings on roof overhangs |
| 08/02/1989 | EP0326157A2 Concrete reinforcing steel bar able to be bent back |
| 08/01/1989 | US4852692 Roofing safety device |
| 07/27/1989 | DE3801003A1 Arrangement for feeding tunnel formwork with concrete |
| 07/27/1989 | DE3800952A1 Standard-shackle load anchor for a concrete structural part |
| 07/25/1989 | US4850114 Decking spacer |
| 07/18/1989 | US4848961 Concrete screed |
| 07/18/1989 | US4848052 Spacer for tension member |
| 07/12/1989 | EP0323470A1 A lashing machine. |
| 07/11/1989 | US4846580 Large scale concrete conveyance techniques |
| 07/11/1989 | US4845858 Stud locating tape |
| 07/05/1989 | EP0322751A1 Apparatus to be incorporated in a formwork for concrete building elements |
| 07/05/1989 | CN2040518U Multifunctional tensioner |
| 07/05/1989 | CN2040514U Semi-automatic water saving flush device for urinal |
| 07/04/1989 | US4843778 Elongated prestressed concrete tank and method of constructing same |
| 07/04/1989 | US4843726 Stud alignment and positioning tool |
| 06/29/1989 | DE3742296A1 Lifting appliance for heavy loads |
| 06/28/1989 | EP0321915A1 Device for display wall boards, preferably composed of a plurality of individual elements |
| 06/28/1989 | CN2040130U Raw-material formulation rule for reinforcing bar engineering |
| 06/28/1989 | CN2040129U Distributor of concrete-transfering pump |
| 06/27/1989 | US4842063 Anchoring method and capsule therefor |
| 06/27/1989 | CA1256297A1 Method and a device for feeding concrete into a drill hole in the concrete bolting of a rock |
| 06/21/1989 | CN2039727U Concrete lining machine for single-slope ditch |
| 06/14/1989 | CN2039334U Protecting unit for operation on ladder |
| 06/13/1989 | US4838726 Process and devices for tying crossing elements |
| 06/13/1989 | US4838465 Guide bar for a hose which is physically manipulated by workers to deliver a high density material to a predeterminated site |
| 06/13/1989 | US4838382 Building safety net |
| 06/08/1989 | DE3739933A1 Support for producing batter boards |
| 06/06/1989 | US4836517 Fascia board installing apparatus |
| 06/01/1989 | WO1989004897A1 Protective lath making a plaster joint when plastering a wall |
| 05/30/1989 | US4834148 Reinforcement binding machine |
| 05/30/1989 | US4833850 End protector for a reinforcing bar |
| 05/24/1989 | EP0214224B1 A nozzle for the application of jointing materials |
| 05/24/1989 | DE3737645A1 Reinforcement element and method of connecting the reinforcement of reinforced-concrete structural parts which are to be concreted one after the other |
| 05/24/1989 | CN2038132U Wire-hanging ruler for building |
| 05/16/1989 | US4830669 Low water-cement ratio by using small ice pieces instead of water; delaying hydration; high strength |
| 05/16/1989 | US4829737 Device for building slabs from building blocks |
| 05/11/1989 | DE3737084A1 Demountable formwork and process for introducing corrosion-protection material into the interspaces between the ropes of a rope cable of roof or bridge structures in use |
| 05/10/1989 | EP0314927A2 Anchoring device for a tensioning member and method of anchoring |
| 05/09/1989 | US4827689 Automated apparatus for lining the wall of a vessel with bricks |
| 05/09/1989 | CA1253704A1 Apparatus for storing a concrete feeding hose in a rock bolting device |
| 05/02/1989 | US4826091 Apparatus and method for winding a wire around a structure |
| 04/25/1989 | US4824022 Method of and apparatus for applying a sprayed concrete layer to a surface |
| 04/20/1989 | DE3810323C1 Process for mounting a tension member which runs in a freely stressed manner between its anchorage points, in particular a stay cable for a cable-stayed bridge |
| 04/18/1989 | US4821994 Molding for the retention of a tie in the concreting of a precast concrete part |
| 04/12/1989 | EP0310850A1 An elastic strap for fastening a tarpaulin |
| 04/12/1989 | EP0200725B1 A device for planation of a fresh concrete surface |
| 04/12/1989 | CN2035778U Boron carbide terrazzo machine for buildings |
| 04/11/1989 | US4819393 Device for anchoring one end of at least one tensioned cable or bar, in particular for a prestressed concrete structure |
| 04/06/1989 | DE3731722A1 Deflection body for stressing elements of a stressing member for prestressing prestressed-concrete load-bearing structures |
| 04/06/1989 | DE3731721A1 Deflection device for a stressing member for prestressing prestressed-concrete load-bearing structures |
| 03/29/1989 | EP0308406A1 Concrete distribution device. |
| 03/28/1989 | US4815860 Method for the manufacture of sprayable concrete |
| 03/28/1989 | US4815562 Debris barrier |
| 03/16/1989 | DE3736512C1 Bevel for taking measurements on the building site for producing inner linings for roof windows |
| 03/16/1989 | DE3708426A1 Adjustable levelling board |
| 03/15/1989 | EP0306504A1 Apparatus for repeated marking at regular intervals |
| 03/14/1989 | US4811819 Device for horizontally moving an apparatus working at a high location |
| 03/08/1989 | CN1031576A Improvements to scaffolding |
| 03/07/1989 | US4810128 Levelling device for producing a smooth surface |