Title of Invention

ROTARY HOE BLADE FOR A CULTIVATOR

Abstract

This invention provides a rotary hoe blade for a cultivator which is a steel plate with one end cut at an acute angle and drilled with a number of holes for attaching to the blade holding flange while the other end of the rotary hoe blade is cut obliquely toward the knife edge. One side edge of the rotary hoe blade is sharpened into a knife edge from one end obliquely cut to a certain distance from the end with an acute angle. The rotary hoe blade is bent into a curve upward approximately in the middle of the rotary hoe blade and then twisting the side with the knife edge inside again. The region bent approximately in the middle of the rotary hoe blade is made to curve inward.

Full Text

FORM 2 THE PATENTS ACT, 1970 (39 of 1970) & THE PATENS RULES, 2003 COMPLETE SPECIFICATION [See section 10, Rule 13] ■sef ROTARY HOE BLADE FOR A CULTIVATOR; 'I NOPADOL VICHIENPRAKARN A THAI NATIONAL OF 1/4-7 PETCHAKASEM RD., OAM-NOI, KATUMBAN, SAMUTSAKRON 74130, THAILAND; 1 r 6!^ «aiii?HE FOLLOWING SPECIFICATION ta % JMUM Sfc¥¥#RTICULARLY DESCRIBES THEINVENT10N 2A MAR 2005 AND THE MANNER IN WHICH IT IS TO BE PERFORMED. 1 This invention is related to a rotary hoe blade for a cultivator which is a steel plate having one end cut into an acute angle and having a number of holes for attaching to the blade holding flange. The other end of the rotary hoe blade is cut with a slope leading to the edge of the blade. One side of the rotary hoe blade is sharpened from the end which is cut with a slope to a distance from the end with the acute angle. The rotary hoe blade is bent into a curve in the middle of the plate of the rotary hoe blade while the side with the sharp edge is twisted inward. The region which is bent at the middle of the rotary hoe blade is made to curve inward. This manner of bending the rotary hoe blade helps increase the strength of the rotary hoe blade and prevent the front side of the rotary hoe blade to fray against the soil wall while the rotary hoe blade is rotating. An object of this invention is to provide a new type of rotary hoe blades for a cultivator to facilitate production of rotary hoe blades, reduce the number of production steps in order to reduce the cost of production, and to make installation of rotary hoe blades to a cultivator more convenient and stable. Field of invention Agricultural engineering with regard to rotary hoe blade for a cultivator Background of invention Rotary hoe equipment is a tool used in preparation of soil for cultivation of plants which has been receiving increasing attention from farmers. However, at present there is no production of rotary hoe in Thailand and this tool must be imported from foreign countries including both the rotary hoe body and the rotary hoe blades. Rotary hoe blades produced in foreign countries are rather expensive 2- and farmers must spend a large amount of money for each replacement of blades. On the other hand, it is rather difficult to produce the rotary hoe blades because the shape of the blades used with the rotary hoe body produced in foreign countries is complicated and must be manufactured in many production steps. This problem has generated attempts to invent rotary hoe blades and installation of the rotary hoe blades in order to help facilitate production of the blades and reduce the number of the production steps to thereby reduce the production cost and optimize the tool for use with the soil condition in Thailand, by continuing to develop the tool further from the Thai patent application No. 086673. Detailed disclosure of the invention Figure 1 shows a rotary hoe blade 1 for a cultivator according to the present invention as being a curved steel plate with parallel side 2. One side edge is sharpened into a blade 3 and one end 4 of the rotary hoe blade 1 is cut into an angle with a number of drilled holes 5 for attaching to a blade holding flange (as shown in Fig. 5) by means of attachment. The other end 6 of the rotary hoe blade 1 is cut with a slope toward the knife edge 3. The rotary hoe blade 1 is bent to curve up at a position approximately in the middle of the rotary hoe blade plate 7 and is made to curve inward to the inner side 8. The inside of the bent area approximately in the middle of the rotary hoe blade plate 7 and the portion approximately at the middle of the rotary hoe blade plate 7 curved is bent in the opposite direction from the first bending direction 9 (as clearly shown in Fig. 2-4). Such manner of bending helps increase the strength of the rotary hoe blade 1 and prevent the front surface of the rotary hoe blade 1 from fraying the soil wall 3 and thereby creating resistance while the rotary hoe blade 1 is rotatively chopping the soil. Figure 5 shows installation of the rotary hoe blade 1 to the flange of the cultivator 10 in which the rotary hoe blade 1 is installed on the blade holding flange 11. The blade holding flange 11 is a steel plate with a hole 12 in the center for attaching to the flange holding shaft for attaching the blades of the cultivator. Along the edge of the blade holding flange 11 there are a number of holes 13 for attaching to the drilled hole 5 of each rotary hoe blade 1. Brief description of the drawings Figure 1 shows a rotary hoe blade for a cultivator according to the present invention. Figure 2 shows another angle of a rotary hoe blade for a cultivator according to the present invention. Figure 3 shows another angle of the rotary hoe blade for a cultivator according to the present invention. Figure 4 shows another angle of the rotary hoe blade for a cultivator according to the present invention. Figure 5 shows the installation of the rotary hoe blade to the flange holding shaft for attaching the blades of a cultivator according to the present invention. Best mode for practicing the present invention As described in the detailed description of the invention h I CLAIM 1. A rotary hoe blade for a cultivator wherein the rotary hoe blade (1) is a curved steel plate having parallel side edges (2) and having one side edge as a knife edge (3) while one end (4) of the rotary hoe blade (1) is cut at an angle and having a number of drilled holes (5) for attaching to the blade holding flange (11) by means of attachment; the other end of the rotary hoe blade (1) being cut at an angle with respect to the knife edge (3), characterized in that the portion approximately in the middle of the rotary hoe blade plate (7) is bent and has an inward curve toward the inner side (8), and the portion approximately in the middle of the rotary hoe blade plate (7) curved is bent in the opposite direction from the first bending direction (9) Dated this 24th day of March, 2005. FOR NOPADOL VICHIENPRAKARN ^-Qy His Agent (UMA BASKARAN) KRISHNA & SAURASTRI 5 Abstract This invention provides a rotary hoe blade for a cultivator which is a steel plate with one end cut at an acute angle and drilled with a number of holes for attaching to the blade holding flange while the other end of the rotary hoe blade is cut obliquely toward the knife edge. One side edge of the rotary hoe blade is sharpened into a knife edge from one end obliquely cut to a certain distance from the end with an acute angle. The rotary hoe blade is bent into a curve upward approximately in the middle of the rotary hoe blade and then twisting the side with the knife edge inside again. The region bent approximately in the middle of the rotary hoe blade is made to curve inward. 2 4 MAR 2005" 6

Documents:

341-MUM-2005-ABSTRACT(24-3-2005).pdf

341-mum-2005-abstract(granted)-(12-6-2009).pdf

341-MUM-2005-CANCELLED PAGES(17-10-2008).pdf

341-MUM-2005-CANCELLED PAGES(20-3-2009).pdf

341-MUM-2005-CLAIMS(20-3-2009).pdf

341-MUM-2005-CLAIMS(24-3-2005).pdf

341-MUM-2005-CLAIMS(AMENDED)-(17-10-2008).pdf

341-mum-2005-claims(granted)-(12-6-2009).pdf

341-MUM-2005-CLAIMS(MARKED COPY)-(17-10-2008).pdf

341-MUM-2005-CLAIMS(MARKED COPY)-(20-3-2009).pdf

341-MUM-2005-CORRESPONDENCE(20-3-2009).pdf

341-MUM-2005-CORRESPONDENCE(26-3-2009).pdf

341-MUM-2005-CORRESPONDENCE(IPO)-(10-2-2009).pdf

341-MUM-2005-CORRESPONDENCE(IPO)-(22-6-2009).pdf

341-mum-2005-correspondence-received-ver-240305.pdf

341-mum-2005-correspondence-received-ver-270505.pdf

341-mum-2005-correspondence-received-ver-310506.pdf

341-MUM-2005-DESCRIPTION(COMPLETE)-(20-3-2009).pdf

341-MUM-2005-DESCRIPTION(COMPLETE)-(24-3-2005).pdf

341-mum-2005-description(granted)-(12-6-2009).pdf

341-MUM-2005-DRAWING(24-3-2005).pdf

341-mum-2005-drawing(granted)-(12-6-2009).pdf

341-MUM-2005-FORM 1(17-10-2008).pdf

341-MUM-2005-FORM 1(24-3-2005).pdf

341-mum-2005-form 2(20-3-2009).pdf

341-mum-2005-form 2(24-3-2005).pdf

341-MUM-2005-FORM 2(COMPLETE)-(24-3-2005).pdf

341-mum-2005-form 2(granted)-(12-6-2009).pdf

341-MUM-2005-FORM 2(TITLE PAGE)-(20-3-2009).pdf

341-MUM-2005-FORM 2(TITLE PAGE)-(24-3-2005).pdf

341-mum-2005-form 2(title page)-(granted)-(12-6-2009).pdf

341-MUM-2005-FORM 3(17-9-2008).pdf

341-MUM-2005-FORM 3(2-12-2008).pdf

341-MUM-2005-FORM 3(24-3-2005).pdf

341-MUM-2005-FORM 3(5-6-2006).pdf

341-mum-2005-form-18.pdf

341-mum-2005-form-2.doc

341-mum-2005-form-2.pdf

341-mum-2005-form-5.pdf

341-MUM-2005-GENERAL POWER OF ATTORNEY(17-6-2005).pdf

341-MUM-2005-POWER OF ATTORNEY(20-3-2009).pdf

341-MUM-2005-POWER OF ATTORNEY(26-3-2009).pdf

341-MUM-2005-SPECIFICATION(AMENDED)-(20-3-2009).pdf

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