Patent applications in WIPO №_2:

Pub. No.: WO/2013/162487
International Application No.:  PCT/UA2013/000033
Publication Date: 31.10.2013
International Filing Date: 27.03.2013
IPC: E04F 21/06 (2006.01), E04F 21/16 (2006.01)  
Applicants: PYSMENSKYI, Sergii [UA/UA]; (UA)
Inventors:  PYSMENSKYI, Sergii (UA)

link to WIPO patent application:

http://patentscope.wipo.int/search/en/detail.jsf?docId=WO2013162487&recNum=167&docAn=UA2013000033&queryString=%28IC/e04%29%20&maxRec=25338

                     

                             Sketches of the patent

 

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DEVICE FOR PLASTERING WINDOW AND DOOR  ESCONSONS

 

     Field of Invention

This invention relates to devices used in the finishing construction works, in particular, to devices for plastering the window and door plane esconsons.

 

Background art

Plaster esconsons are the most common type of finishing esconsons, which can be applied both inside and outside of the building. Esconsons are made at a slope (turn), or at the esconson angle that is formed due to the fact that the distance between the outer boundaries of esconsons is greater than the distance between the inner borders of esconsons (i.e., the distance between the outer slope angles is greater than the distance between the inner corners). Esconsons on the facades of the building and in each of its interior rooms should be alike and symmetrical, and the corresponding outer boundaries of esconsons should lie on same lines.

The need for new plastering tools arose through observation of the construction workers, plasterers and painters and through quality analysis of work they perform when plastering and finishing door and window esconsons, as well as through the analysis of time spent on achieving good quality in the performance of this work.

Today, plastering window and door esconsons is the most common but time-consuming, relatively unsafe and inefficient process, and the tools that are used in it are not as safe, easy-to-use, easy-to-control, reliable, accurate and efficient as it is normally required.

One of the most extensively used tools in this area is a plastering rule that is used for leveling off plaster applied on the building walls . As a rule, such plastering rule is made of a rigid material (such as aluminum) in the form of extruded perforated metal strip protected against corrosion.

However, when plastering the window and door plane esconsons the plastering rule and wooden slats are used in most cases to create a screed strip for the outer boundary of the esconson and its outer corner.

Inconvenience of using plastering rules for leveling off plaster on esconsons can be explained by several reasons, such as:

-     to use the plastering rule effectively the screed strip of the esconson outer boundary and the screed strip of the esconson inner boundary should be installed, which is a difficult and time-consuming operation even for a qualified professional since one has to constantly compute and stick to esconson angle;

-     at the outer boundary of the esconson it is very difficult to maintain the right edge and a clear-cut outer esconson angle, in particular, it is very difficult to reliably and accurately fix the pilot guides and screed strips.

In addition, the plastering rule generally can not be used to slide across the area of the door or window frames and boxes, because it has no sliding cut and sliding the plastering rule or a perforated metal strip on wooden or plastic boxes or frames can damage and/or scratch them. Using a sliding cut is not advisable because the plastering rule is not a throwaway tool, on the one hand, and, the height and cut parameters are individual and depend on the angle of esconson and the extent to which door frames or window casings are inserted into the esconson plaster, on the other hand.

The most relevant to the claimed device is a device for plastering the window and door plane esconsons containing an element for leveling off the applied plaster . Here, a wooden lath with a cut is used as an element for flattening out the applied plaster.  The wooden lath with a cut is connected to the handle. This device, known as a floating rule, is manufactured and used by taking into account specific conditions and parameters of the window and door plane esconson plastering. This is a throwaway tool that is discarded upon plastering of window or door plane esconsons although in some cases such floating rule may be damaged or deformed due to the moisture in the very process of its operation.

During plastering of window and door plane esconsons the screed strip is first installed and fixed on the outer edge of esconson. The plastering rule or lath is used as a pilot guide. To level off the applied plaster, the window and door plane esconson plastering device is installed on the screed strips: door or window frame, and on the pilot guide (screed strip) mounted on the outer edge of esconson, and move it along these screed strips. This device (floating rule) is installed by holding the cut in the wooden slat directed toward the door or window frame, and the other end toward the guide rail fixed to the outer edge of esconson.

Drawback of this device is inability to adjust and set necessary parameters for the element to level off the applied plaster, which leads to the need to manufacture a new device for each concrete window and door plane esconsons plastering process. This device can hardly be used to accurately maintain the specified esconson angle and the extent of door or window frame penetration into the esconson plaster. Moreover, using such construction tool leads to over-consumption of material, associated with low productivity and poor quality of door and window esconson plastering, and sometimes results in scratches on the contact surface at the door or window frame.

 

Summary of Invention

The object of the present invention is to improve the device for plastering the window and door plane esconsons, wherein - by virtue of the proposed technical means - the desired accuracy is achieved for the esconson angle and the extent of the door or window frame penetration into the esconson plaster, which in turn ensures high quality of door and window esconson plastering. In addition, the proposed device increases safety, versatility and efficiency of door and window esconson plane plastering, and  - along with high quality of this work - significantly reduces total time associated with its performance and allows for much inferior skills of the appropriate construction workers.

The object is achieved by the claimed  device for plastering window and door plane esconsons comprising  a removable and adjustable element for leveling off plaster applied on esconsons and an angular structure, consisting of two linear elements rigidly fixed to each other. One of linear element  is flat-topped, into which the element for leveling off plaster applied on the esconson is introduced and adapted to be fixed, and another linear element is located at a joint place of linear elements in the same plane with an   end of the flat-topped linear element, and includes  a bar. The bar is  adapted  to sliding  movement  and fixation  in relation to  the end of  flat-topped  linear element and to the  end of  the  introduced element for leveling off plaster applied on the esconson. According to the proposed invention  the bar has   a  working end portion located  at the side of the bar  opposite to the sliding surface, the working end portion  including  two sections  that are positioned at an angle to each another so that upon  device movement  during plastering of window and door plane esconsons the said sections come into contact with the linear surfaces of the outer corner of corresponding window or door frame wherein the first section of the  working end  portion is adapted  to provide the sliding contact with one of the surfaces of this outer corner, and the second section of the working end portion  is adapted  to limit cross-perpendicular displacement of the device beyond the limits of the other  linear surface of this corner.

In one preferred embodiment, the working end portion may has  a wheel adapted to  rotate in a plane parallel to the  bar and  fixed at the working end  portion of the bar  so that the end of the bar projects beyond the limit of this wheel and is made tapered or U-shaped,  the outer surface of the wheel serving as the first section of the  working end  portion and the surface of projected  end of the bar  adjacent to the wheel serving as the second section.

According to another preferred embodiment the  working end portion  may has  a flanged wheel  adapted to rotate in a plane parallel to the  bar  and  fixed near the  end of the bar ,   the outer surface of the wheel serving as the first section of the working  end portion and the surface of the flange adjacent to the outer surface of the  wheel serving as the second section.

                       

In addition it is advisable that the working end portion of the sliding bar  would have an angular element, a first  side of which is  formed by a bar extension, and the second  side is substantially  perpendicular to it,  the surface of the angular element, which is a bar extension, being  the second section and the surface of the second  side adjacent to  the surfice of the first side  being  the first section.

It is advisable also to select either a plastering rule or a perforated metal strip or a rail or a lath as an element for leveling off plaster applied to the esconson mounted on a flat-topped perforated metal strip.

The proposed  device allows to obtain  a rather straightforward selection of desired angle and extent of door or window frame penetration into plaster of the esconson when plastering window and door plane esconsons, that is, to form the geometry of esconson by copying the outer corner of the door or window frame perimeter at the side of esconson and transforming reference parameters into the given esconson plane. In addition, due to specific design of the fixed bar’s end sections, such as a wheel or a rounded element with reference guide (screed strip) in form of a window or door frame, it is possible to significantly speed up and improve the effectiveness of plastering process and enhance the quality of door or window plane esconsons. This  construction  allows achieving better efficiency of the plastering the door and window esconsons while reducing requirements for qualification of the plasterers, which greatly expands the choice of professionals that can do this work with high quality. The author considers that part of the device without the element for leveling off plaster applied to esconson may also be called the “reference roller” as this name reflects the essential function of this part of the device, namely: the ability of this part of device to smoothly and correctly roll along the guide (screed strip).

The principle of the proposed device is that a wheel or a rounded angular element correctly moves (rolls or slides) on a linear angular plane of corner window or door frame at the side of the plastered esconson. By using this device and, for example, a plastering rule or a perforated metal strip or a rail locked in this device the parameters of the outer perimeter of the window or door frame at the side of the plastered esconson are copied and then transformed into the specified parameters of the esconson angle. This enables to almost ideally level off plaster across the plane of esconson by maintaining high precision of internal and external esconson angles and ensure equal extent of the window or door frame’s penetration into the body of the esconson. Window and door frames are installed according to the carpenter's level (plumb level), and thus indirectly act as one of the screed strips or reference slats. The second reference for the device of leveling the applied plaster can be either a plastering rule or a perforated metal strip or a straight slat or a lath installed at the outer side of esconson and the wall and fixed on the adjacent wall plane with any of the construction clips.

 

Brief description of drawings

The invention is further illustrated by, but is not limited to, the detailed description, with references to the following drawings:

Fig. 1 and Fig. 4 – embodiments of the claimed device for plastering window and door plane esconsons, wherein a plastering rule is fixed (as an element for leveling off plaster applied to esconsons) and the working end portion of the bar includes a flanged wheel;

Fig. 2, Fig. 5 - the same as in Fig. 1 and 4 without plastering rules;

Fig. 3 - the claimed device shown in Fig. 2, prior to assembly;

Fig. 6 - the claimed device shown in Fig. 5, prior to assembly;

Fig. 7 - embodiment of the claimed device for plastering the window and door esconsons having  a plastering rule and a flangeless wheel;

Fig. 8 - embodiment of the claimed device shown in Fig. 7, prior to assembly;

Fig. 9 - embodiment of the claimed device without the element for leveling off plaster applied to esconson having a flangeless wheel;

Fig. 10, Fig. 11 – the claimed device without the element for leveling off plaster applied to esconson wherein the working end portion of the bar is made  as an angular element;

Fig. 12 - an example of using the claimed device for plastering window and door esconsons when plastering door esconsons.

 

Best mode of carrying out the invention

The proposed evice for plastering window and door esconsons (Fig. 1, Fig. 4 and Fig. 7) includes  a rigid angular structure 1 (which may be called the reference roller) for plastering esconsons (separately shown in Figures 2, 3, 5, 6, 8, 9, 10 and 11), and removable  element 2 for leveling  off the applied plaster, such as a plastering rule, perforated metal strip,  rail or a lath. Structure 1 (the reference roller) consists  of linear elements:  3 and 4. Liner element 3 is flat-topped  into which the element 2, for example a plastering rule,  is introduced  and adapted to be fixed  within it. Another linear element  4 is located at a joint place of element 3, 4  - in the plane parallel to the plane of the end of the flat-topped element . The element  4 includes  a  bar 5  adapted to sliding movement  and fixation in relation to the end of  linear element  3 and  to the end of the introduced  element 2.  A working end portion  6  of bar 5 has two sections  6-1, 6-2 placed at an angle to each other. During plastering esconsons sections 6-1,6-2  come into contact with the linear surfaces of the outer corner of corresponding window or door frame, whereas the first section 6-1  of the  working end portion  is adapted  to provide the sliding contact with one of the linear surfaces of this outer corner, and the second section 6-2 of the working end  portion is adapted  to limit cross-perpendicular displacement of the device beyond the limits of the other  linear surface of this corner.

In one of the  preferred embodiments  of the  invention,  the device  comprises a wheel 7 (Fig. 7,8,9)   adapted to  rotate in a plane parallel to the  bar  5 and  fixed at the working end  portion  6 of the bar 5 so that the end of the bar  5 projects beyond the limit of this wheel and is made tapered or U-shaped,  the outer surface of the wheel  7 serving as the first section 6-1 of the  working end  portion  6 and the surface of projected  end of the bar 5 adjacent to the  outer surface  of the wheel 7 serving as the second section  6-2.It is possible to fix the bar 5 in the other working positions depending on specific application parameters.

According to the invention the working end portion 6 of the  bar 5 comprises  an  angular element 8 (Fig.10,11)   having  a  first  side  8-1  formed as  an extension of the bar 5  and  a second  side  8-2 substantially  perpendicular to the first side 8-1,  the  surface of the  first side 8-1  of  the angular element  8 serving as  the second section 6-2 of the working end portion  and the surface of the second  side 8-2 adjacent to the surface  of the first side 8-1 serving  as the first section 6-1.

The angular element 8 (Fig. 10 - Fig.11) of the working end  portion 6 of bar 5 allows the device to slide in a plane perpendicular to the plane of the end of the element 3, and if a plastering rule 2 is fixed in element 3, it is perpendicular to the plane of its end. To ensure high precision of copying parameters of the window or door frame outside corner perimeters at the side of esconson that is plastered and transforming them into the set parameters of esconson angle (esconson slew degree).

In the another preferred embodiments of the invention the working end portion 6     comprises  a  wheel 7 with a flange 9  ( Fig. 1,2,3,4,5,6)   adapted to rotate in a plane parallel to the  bar  and  fixed near the end of the bar,  the outer surface of the wheel serving as the first section of the working  end portion and the surface of the flange adjacent to the  outer  surface of the wheel serving as the second section.

In all embodiments wherein  the outer surface of the wheel 7 serves  as  a  sliding surface  ( serves as  the first  section 6  of the working end portion) this surface may be made of rubberized material with micro-tread  so as to assure  the reliable and correct grip with the window or door frame while moving the device and the surface of the second  section 6-2  of projecting end or flange are better to be smooth and polished.

It is clear that the external work surface of the angular element 8 in both first and second sides 8, 8-1, 8-2  should be smooth and polished.

         The element 2 for leveling the applied plaster can be fixed in the flat-topped element 3 and a position of the bar 5 can be adjusted and fixed in element 4 by locking elements 10 and 11.

Fig. 12 shows an example of using the claimed device for plastering a door frame esconson, wherein   the  following  references are used: wall 12, door frame 13, fixator 14 for finishing and construction works, the plastered esconson surface 15, screed guide 16.

Before finishing the esconsons all adjacent walls  should be plastered and scoured. The prescribed esconson angle (turn) is measured and adjusted by a bevel square. Based on the angle, on the plastered wall 12 according to a level the outer boundary of the esconson is set  by installing and fixing the screed guide 16. The role of the second  screed guide  is played by the door frame 13 that is installed in accordance with the standards and leveled off. The plastering rule element 2 is placed with its blunt part into the flat-topped element 3 and fixed with element  10 so that the bar 5 by its rear side surface was pressed to the end of the plastering rule 2 and the wheel 7 moved as a rotating tooth on the outside line of the angular plane the perimeter of door frame 13. Plastering mass is abundantly applied to the surface of the aperture of the wall 12  to be plastered as an esconson. By using two references, the door frame 13 and the screed guide 16 fixed to the outer edge of the esconson, the claimed device  is installed so that wheel 7 is placed on a reference, whose function is performed by the door frame 13. The desired depth of door frame embedding into the body of the esconson is selected by moving and fixing of the bar 5 in the  element 4. Then, the plastering mass is abundantly applied on a finished surface and, using both hands, the  claimed device  is  set  so that the wheel 7 of bar 5 is placed on the outer corner of door frame 13 from the side of  the treated esconson and the section of plastering rule 2 rests on the screed guide 16.

Further, a worker, who plasters an esconson,  moves the claimed device by using two references: door frame 13 and the screed guide16. The wheel 7 rolls along the door frame 13 so that the parameters of the outer corner of the frame at the side of the plastered esconson are copied and then transformed into specified parameters of esconson angle . Simultaneously, the excess of plaster is leveled off thus forming a  plastered  surface 15 with high precision of internal and external esconson angles. After that, the finished esconson surface is scoured and the screed guide 16 mounted on the outer boundary of the esconson is removed.

Similarly, the device for plastering the window and door esconsons with an angular element 8 mounted on the bar 5 is used; in this case, the element 8 slides on the outer angular surface of the door frame 13.

Using this device for plastering window and door esconsons allows to achieve high quality esconson planes in a short time at low cost and with reduced requirements to the skills of construction workers and/or plasterers.

Therefore  the claimed  device for plastering window and door esconsons ensures the following:

-     increasing  efficiency and operating rate of the  plastering of door and window esconsons;

-     reducing the percentage of defects and excessive consumption of materials when plastering esconsons;

-     improving  the quality of plastered door and window esconsons;

-     improving  safety of plastering the door and window esconsons;

-     increasing  accuracy of the desired esconson (turn) angle and the degree of door or window frame penetration into the body of esconson plaster.

In addition the proposed device allows to  achieve  almost perfectly flat edge of the outer esconson corner, on which it is easy to install angle bars later as well as  to reduce the cost of works associated with plastering esconsons and increases total profitability.

                    

 

                                                 Abstract

 

DEVICE FOR PLASTERING WINDOW AND DOOR ESCONSONS

 

The present invention relates to the device for plastering window and door esconsons. The device  comprises removable and adjustable  an element (2) for leveling off plaster, such as a plastering rule, as well as an angular structure (1), consisting of two linear elements (3, 4) rigidly fixed to each other, element (3) being  flat-topped and element (4) being  located at the a joint place of elements  (3, 4). Element 4  includes a bar (5)  adapted to sliding movement and fixation. The  working end portion (6) of the  bar (5) is  adapted to provide the sliding contact with with one of the surface of the outer corner of the window or door  and limitation of the cross-perpendicular displacement of the device under moving.  The invention improves the production effectiveness, performance and safety of plastering door and window esconsons, improves quality of plastered door and window esconsons, as well as enhances the accuracy and consistency of esconson (turn), reduces the requirements for professional qualification of plasterers drives down the cost of this work while increasing its overall profitability.

 

 

©  Sergii Pysmenskyi

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Sergii Pysmenskyi

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Sergii.Pysmenskyi@gmail.com

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Lyudmila Makhynya

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