Angular putty knife for inside corners

Abstract

The utility model relates to the field of building, and more particularly to devices for applying materials (putty, plaster and the like) to working surfaces and for smoothing same. Flexible blade members of a putty knife are mounted for limited relative movement, for which purpose said blade members have recesses therein for receiving blade member fastening screws, the heads of which lie flush with the outer surface of the flexible blade members when in a working position, wherein the size of said recesses is selected in order to allow for the movement of each of the flexible blade members by a minimum possible distance sufficient for the formation of a gap between angular edges thereof that is sufficient for cleaning the putty knife and for reliably bringing the edges together when the putty knife is deployed. The claimed putty knife makes it possible to move the blade members in opposing directions in a range, for example, of 1 mm, thus making it possible to bring the blade members into direct contact with one another without undue effort while evening out any manufacturing flaws, and to achieve the highest possible quality of work using the putty knife, as well as to reduce maintenance time and allow better cleaning.

Description

[0001] Corner spatula for internal corners

[0002] Field of technology

[0003] The utility model relates to the field of construction, namely, to devices for applying materials (putty, plaster, etc.) to treated surfaces and leveling them.

[0004] Prior art

[0005] A spatula is known according to Russian patent No. 2274717, comprising a handle and a working plate having two large sides, two end and two side edges, wherein the handle is connected to the working plate and covers it from the side of its two large sides, two side and end edges, characterized in that at the edge of the handle from the side of the working plate there are two through slots to the working plate, located at the point where the side edge and the large side of the working plate converge.

[0006] In this spatula, the size of the slot in the direction of the side edge is more than 2 times larger than the size of the slot in the transverse direction. The first edge of the slot is located in the plane of one of the large sides of the working plate, and the second edge of the slot is located parallel to the nearby side edge.

[0007] The disadvantage of this spatula is the need to have construction skills, the ability to form internal corner joints only 90°, and external ones using two spatulas and construction skills.

[0008] An angular spatula is known according to the Russian Federation patent No. 206293, which has two flexible plates located at an angle to each other and a handle, as well as a support element made in the form of two rigid, non-bending, symmetrical sector-shaped parts, which are connected with their sides at an angle of 95-110°. The flexible plates are also made in a sector-

[0009] SUBSTITUTE SHEET (RULE 26) are U-shaped and attached to the corresponding parts of the supporting element.

[0010] The tops of the parts of the support element and flexible plates are located at one point, and along the line of connection of the parts of the support element and flexible plates in the area near their corner connection, a set of through holes is made. The corner spatula allows the plates to apply putty to the corner with maximum quality, without radius and plane distortion, forming a clear junction of two planes in the inner corner without defects, ensures the removal of excess putty through the through holes, which reduces the time for further grinding and defect detection of inner corners.

[0011] This technical solution, as the closest to the declared one in terms of technical essence and the achieved result, is accepted as its prototype.

[0012] The prototype design allows the plates to apply putty to the corner with maximum quality, without radius or plane distortion, forming a clear junction of two planes in the inner corner without defects, and also ensures the removal of excess putty through through holes, which reduces the time for further grinding and defect detection of inner corners.

[0013] The disadvantage of this technical solution is the difficulty of closing the plates in the corner due to the backlash-free method of their fastening and the difficulty of adjusting their closing. Since it is necessary to periodically disassemble and clean the spatula, this presents a certain difficulty for the master.

[0014] Disclosure of a utility model

[0015] SUBSTITUTE SHEET (RULE 26) The objective of the utility model is to create a spatula, the design of which ensures the possibility of their limited movement relative to each other in opposite directions.

[0016] The essence of the claimed technical solution is expressed in the following set of essential features, sufficient to solve the technical problem indicated by the applicant and to obtain the technical result provided by the utility model.

[0017] According to the utility model, a corner spatula for internal corners, having two flexible plates located at an angle to each other and a handle, as well as a support element made in the form of two rigid, inflexible, symmetrical sector-shaped parts, which are connected with their sides at an angle to each other, wherein the flexible plates are also made in a sector-shaped form with an area exceeding the area of ​​the parts of the support element, and are attached to the corresponding parts of the support element so that their sides form an angle equal to the angle between the parts of the support element, wherein the tops of the parts of the support element and the flexible plates are located at one point, in addition, along the line connecting the parts of the support element and the flexible plates in the area near their corner connection, a set of through holes is made, characterized in that the flexible plates are installed with the possibility of relative limited movement, for which purpose recesses are made in them, in which their fastening screws are placed,the heads of which in the working position are placed flush with the outer surface of the flexible plates, while the size of the recesses is selected from the condition of ensuring the possibility of moving each flexible plate to the minimum possible distance, sufficient for the appearance of a gap between their corner edges, sufficient for cleaning the spatula and reliable closure of these edges during operation of the spatula.

[0018] SUBSTITUTE SHEET (RULE 26) The applicant has not identified sources containing information on technical solutions, the set of features of which coincides with the set of distinctive features of the declared technical solution, which allows us to conclude that it meets the condition of “novelty” (N).

[0019] The declared set of essential features of the utility model ensures the achievement of a technical result, which consists in the fact that the design of the declared corner spatula allows moving the plates in opposite directions in a limited range, necessary in order to connect them tightly without unnecessary difficulties, leveling out the error in their manufacture, achieve the best quality of work with this spatula, as well as reduce the time of its maintenance and improve the quality of its cleaning.

[0020] Best use of the invention

[0021] The essence of the claimed technical solution is explained by the drawing, in which Fig. 1 shows the claimed spatula in section in the working position, and Fig. 2 shows the same in the non-working position when cleaning the spatula.

[0022] The claimed corner spatula includes flexible metal working plates 1 and 2. They have recesses 3 and 4 in which their fastening screws 5 and 6 are placed, the heads of which in the working position are placed flush with the outer surface of the flexible plates 1 and 2.

[0023] The size of the recesses 3 and 4 is selected based on the condition of ensuring the possibility of moving each flexible plate 1 or 2 in opposite directions by a limited distance (±1 mm) to create a gap between their corner edges, sufficient to clean the spatula with a stream of water and then ensuring reliable, gap-free closing of these edges of the plates.

[0024] The declared spatula allows you to move the plates in opposite directions in the range of, for example, ±1 mm, which allows you to do it without unnecessary difficulties.

[0025] SUBSTITUTE SHEET (RULE 26) to connect them tightly, leveling out the errors in their manufacture, to achieve the best quality of work with this spatula, as well as to reduce the time of its maintenance and improve the quality of its cleaning.

[0026] The claimed device can be implemented using known equipment, technical and technological means and is intended for applying materials (putty, plaster, etc.) to the internal corners of the surfaces being treated and leveling them.

[0027] SUBSTITUTE SHEET (RULE 26)

Claims

Utility model formula An angular spatula for internal corners, having two flexible plates arranged at an angle to each other and a handle, as well as a support element made in the form of two rigid, inflexible, symmetrical sector-shaped parts, which are connected with their sides at an angle to each other, wherein the flexible plates are also made in a sector-shaped form with an area exceeding the area of ​​the parts of the support element, and are attached to the corresponding parts of the support element so that their sides form an angle equal to the angle between the parts of the support element, wherein the tops of the parts of the support element and the flexible plates are located at one point, in addition, along the line connecting the parts of the support element and the flexible plates in the area near their angular connection, a set of through holes is made, characterized in that the flexible plates are installed with the possibility of relative limited movement, for which purpose recesses are made in them, in which their fastening screws are placed,the heads of which in the working position are placed flush with the outer surface of the flexible plates, while the size of the recesses is selected from the condition of ensuring the possibility of moving each flexible plate to the minimum possible distance, sufficient for the appearance of a gap between their corner edges, sufficient for cleaning the spatula and reliable closure of these edges during operation of the spatula. SUBSTITUTE SHEET (RULE 26)

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