FORM 2
THE PATENTS ACT, 1970 (39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
[See section 10, Rule 13]
A NUTSERT CRIMPING TOOL FOR STRUCTURAL FRAME MEMBER;
LARSEN & TOUBRO LIMITED, A COMPANY INCORPORATED UNDER THE COMPANIES ACT, 1956, WHOSE ADDRESS IS L&T HOySE, BALLARD ESTATE, MUMBAI - 400 001, MAHARASHTRA, INDIA
THE FOLLOWING SPECIFICATION PARTICULARLY DESCRIBES THE INVENTION AND THE MANNER IN WHICH IT IS TO BE PERFORMED.

FIELD OF INVENTION
The present invention relates to crimping tools and more particularly to crimping tools for mechanical fasteners such as nutserts. BACKGROUND OF INVENTION
Nutsert, also known as a rivet nut or a blind nut, is a one piece internally threaded and counter bored tubular rivet that can be anchored entirely from one side. It acts as a threaded nut to fix bolt directly into it in case of closed structural frame members. The crimping of the nutsert on the structural frame member is done by inserting the nutsert in the hole and pulling it outside forcibly such that the part of the nutsert inside the structure expands and it gets fixed into it.
A novel mechanism for facilitating crimping operation is required.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide proper engagement of the nutsert within structural frame member.
Accordingly embodiments of the present invention provide a nutsert crimping tool. The tool comprises a nut and a bolt having a handle at first end and a no threading part near second end of the bolt. A nutsert holding component having teeth is provided at the bottom side to hold the nutsert in place. Said component has a step like structure at the bottom side for deciding the desired formation of the nutsert.
According to the present invention, for formation of the nutsert, the nutsert is inserted in any structural frame member, the rotational movement of the nutsert is restricted and the nut is tightened instantly without allowing it to enter the structural frame member while pulling the bolt out from the structural frame member. The tool is thus configured to hold the nutsert at one position and pull it outside without any rotation.

In one embodiment herein the tightening of the nut is done until the step provided in the nutsert holding component touches the step present in the nutseri.
BRIEF DESCRIPTION OF THE DRAWINGS
Reference will be made to embodiments of the invention, examples of which may be illustrated in the accompanying figures. These figures are intended to be illustrative, not limiting. Although the invention is generally described in the context of these embodiments, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments.
Fig. 1 shows the nutsert crimping tool according to an embodiment of the present invention.
Fig. 2 shows the exploded view of the nutsert crimping tool.
Fig.3 shows the handle part and the no threading part according to an embodiment of the present invention.
Fig. 4 shows the detail view of nut according to an embodiment of the present invention.
Fig. 5 shows the detail view nutsert holding component according to an embodiment of the present invention.
Fig. 6 shows the detail views of the nutsert.
Fig. 7 shows the crimping tool with a nutsert in place according to an embodiment of the present invention.
Fig. 8 shows nutsert being inserted in the structural frame member according to an embodiment of the present invention.
Fig. 9a and Fig. 9b illustrate forming of the nutsert according to an embodiment of the present invention.
Fig. 10 shows the tool being taken out by unscrewing the bolt from the nutsert according to an embodiment of the present invention.
DESCRIPTION OF THE INVENTION

Disclosed herein is a nutsert crimping tool comprising a nut and a bolt having a handle at first end and a no threading part near second end of the bolt. A nutsert holding component having teeth and a step at the bottom side is provided. The teeth holds a nutsert in proper place and the step helps in deciding the desired forming of the nutsert.
Fig. 1 shows the nutsert crimping tool 100 according to an embodiment of the present invention. The tool 100 comprises a bolt 101 having a handle 102 at first end of the bolt 101. A nutsert holding component 103 having teeth at the bottom side is provided to hold a nutsert in place. The holding component 103 has a step like structure at the bottom side for deciding the desired forming of the nutsert. The tool 100 also comprises a nut 104 that can be manually tightened till the step provided in the nutsert holding component 103 touches the step present in the nutsert.
Fig. 2 shows the exploded view of the nutsert crimping tool.
Fig.3 shows the special bolt 101 with no threading at point 301. It can be seen in the figure that the handle 102 is incorporated in the bolt 101 at first end and the no threading part 301 is near the second end of the bolt 101. The handle 102 is held at one end so that the bolt 101 can be placed at one fixed place.
Fig. 4 shows the detail view of nut according to an embodiment of the present invention.
Fig. 5 shows the detail view nutsert holding component 103 according to an embodiment of the present invention. The nutsert holding component 103 has teeth 501 at the bottom side to hold a nutsert in place. The holding component 103 also has a step like structure 502 at the bottom side for deciding the desired forming of the nutsert.
Fig. 6 show the detail views of a typical nutsert 600.
Fig. 7 shows the crimping tool 100 with a nutsert 600 in place according to an embodiment of the present invention.
Fig. 8 shows nutsert 600 being inserted in a structural frame member 800 according to an embodiment of the present invention. The nutsert 600 may be inserted in the structural frame member 800 by following the steps illustrated below.
Step 1:- Inserting the nut 104 in the bolt 101 as shown in Fig.1.

Step 2:- Inserting the holding component 103 in the bolt 101. Since, there is no threading part 301 in the bolt, the holding component 103 remains at point 301. This way assembly of the nutsert holding tool may be completed.
Step 3:- Inserting the nutsert 600 in the above-formed assembly.
Step 4:- Inserting the whole assembly with the nutsert 600 in the structural frame member 800 as shown in fig.8.
Fig. 9a and Fig. 9b illustrates forming 901 of the nutsert 600 according to an embodiment of the present invention. For forming 901 of the nutsert, the nutsert is inserted in any structural frame member, rotational movement of the nutsert is restricted and the nut can be tightened at that instant without allowing it to enter the structural frame member while pulling the bolt out from the structural frame member.
Fig. 10 shows the tool 100 being taksn out by unscrewing the bolt 101 from the nutsert 600 according to an embodiment of the present invention.
Thus the present invention described herein provides a compact crimping tool for a structural frame member. The assembly of the tool components is very simple and easy for a user. The tool helps in obtaining an appropriate engagement of a nutsert within a structural frame member. Further, same tightening of the nut can be achieved because of the step provided in the nutsert holding component.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

We Claim
1. A nutsert crimping tool for a structural frame member comprising:
a bolt having a handle at first end and a no threading part near second end of
the bolt;
a holding component having teeth at the bottom side for holding a nutsert in
fixed place and having a step at the bottom side for deciding the desired
forming of the nutsert; and
a nut.
2. The nutsert crimping tool as in claim 1, wherein the tool is configured to hold the nutsert at one position and pull it outside without any rotation.
3. The nutsert crimping tool as in claim 1, wherein the nut can be tightened instantly without allowing it to enter the structural frame member while pulling the bolt out from the structural frame member.
4. The nutsert crimping tool as in claim 3, wherein tightening of the nut is done until the step provided in the nutsert holding component touches the step present in the nutsert.
5. The nutsert crimping tool as in claim 1, wherein the tool is compact in size.