FORM 2
THE PATENTS ACT, 1970 [39 of 1970]
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(Section 10; Rule 13)
MAGNETIC SHOCK ABSORBER
Pankaj Singh & Kirti Chaware
both Indian Nationals
of
House No. 02, Jawahar Nagar, In front of New Fort Shiv Mandir, Awadhpuri, Bhopal,
Madhya Pradesh, India & C-196, Shahpura, Bhopal, Madhya Pradesh, India
THE FOLLOWING SPECIFICATION PARTICULARLY DESCRIBES THE INVENTION AND THE
MANNER IN WHICH IT IS TO BE PERFORMED.

FIELD OF INVENTION
The invention relates to magnetic shock absorbers and more particularly to arrangements for bringing about different kinds of damping characteristics in a shock absorber.
BACKGROUND AND PRIOR ART:
Shock absorbers are important part of automobile and motorcycle suspensions, aircraft landing gear, and the supports for many industrial machines.
There are several commonly-used approaches to shock absorption:
• Hystersis of structural material, for example the compression of rubber disks, stretching of rubber bands and cords, bending of steel springs, or twisting of torsion bars. Hysteresis is the tendency for otherwise elastic materials to rebound with less force than was required to deform them. Simple vehicles with no separate shock absorbers are damped, to some extent, by the hysteresis of their springs and frames.
• Dry friction as used in wheel brakes, by using disks (classically made of leather) at the pivot of a lever, with friction forced by springs. Used in early automobiles. Although now considered obsolete, an advantage of this system is its mechanical simplicity; the degree of damping can be easily adjusted by tightening or loosening the screw clamping the disks, and it can be easily rebuilt with simple hand tools. A disadvantage is that the damping force tends not to increase with the speed of the vertical motion.
• Solid state, tapered chain shock absorbers, using one or more tapered, axial alignment(s) of granular Spheres, typically made of metals such as nitinol, in a casing.
• Fluid friction, for example the flow of fluid through a narrow orifice (hydraulics), constitute the vast majority of automotive shock absorbers. An advantage of this type is that using special internal valving the absorber may be made relatively soft to compression (allowing a soft response to a bump) and

relatively stiff to extension, controlling "jounce", which is the vehicle response to energy stored in the springs; similarly, a series of valves controlled by springs can change the degree of stiffness according to the velocity of the impact or rebound. Some shock absorbers allow tuning of the ride via control of the valve by a manual adjustment provided at the shock absorber. In more expensive vehicles the valves may be remotely adjustable, offering the driver control of the ride at will while the vehicle is operated. The ultimate control is provided by dynamic valve control via computer in response to sensors, giving both a smooth ride and a firm suspension when needed. Many shock absorbers contain compressed nitrogen, to reduce the tendency for the oil to foam under heavy use. Foaming temporarily reduces the damping ability of the unit. Another variation is the magneto rheological damper which changes its fluid characteristics through an electromagnet.
• Compression of a gas, for example pneumatic shock absorbers, which can act like springs as the air pressure is building to resist the force on it. Once the air pressure reaches the necessary maximum, air dashpots will act like hydraulic dashpots. In aircraft landing gear air dashpots may be combined with hydraulic damping to reduce bounce. Such struts are called oleo struts (combining oil and air).
• Magnetic effects. Eddy current dampers are dashpots that are constructed out of a large magnet inside of a non-magnetic, electrically conductive tube.
• Composite hydropneumatic devices which combine in a single device spring action, shock absorption, and often also ride-height control, as in some models of the citroen automobile.
• Conventional shock absorbers combined with composite pneumatic springs with which allow ride height adjustment or even ride height control, seen in some large trucks and luxury sedans such as certain lincoln and most land rover automobiles. Ride height control is especially desirable in highway vehicles intended for occasional rough road use, as a means of improving handling and

reducing aerodynamic drag by lowering the vehicle when operating on improved high speed roads.
• The effect of a shock absorber at high (sound) frequencies is usually limited by using a compressible gas as the working fluid and/or mounting it with rubber bushings.
The idea for a magnetic shock absorber (for automobiles and two-wheelers), makes use of the magnetic repulsion between dipoles to achieve shock absorption. It has been observed that the like poles of two magnets of the same properties and strength repulse each other and they keep a constant distance between each other because of their magnetic fields.
Shock absorbers attached to suspension systems of automobiles or other vehicles generally have the following structure. A piston connected to a piston rod is slidably fitted in a cylinder having a fluid sealed therein. A stroke of the piston rod causes sliding movement of the piston in the cylinder, which, in turn, induces a flow of fluid. The fluid flow is controlled by a damping force control mechanism comprising an orifice, a disk valve, etc., thereby generating a damping force.
The shock absorber includes one of a type of making a rod protrude from an end portion of a cylindrical case (see Patent Document 1: Japanese Utility Model Laid-Open Publication No. 61-55530).
To use the shock absorber of such a type to absorb the impact force at the stroke end of the reciprocating rod driven by the pneumatic cylinder, the shock absorber is attached to a side face of a cylinder main body while a stopper with which the rod of the shock absorber collides is attached to the reciprocating rod.
Magnets have been used to act as dampeners such as in the context of exercise equipment as illustrated in U.S. Pat. No. 5,752,879. Magnets have been used in fluid flow systems to hold a position of a moving component such as for example in an open or a closed position. Illustrative of a gas line and a medical device application are U.S. Pat. No. 5,209,454 and U.S. Pat. No. 5,970,801. In a similar vein is U.S. Pat. No.

7,527,069. The use of magnets to control the fixation of a movable member in a level control application is seen in U.S. Pat. No. 4,436,109.
One of the more advanced efforts in the field of suspension dampening involving the use of magnetic means appears in the patent to Theodore, U.S. Pat. No. 3,842,753 (1974). Said patent discloses the use of relatively sophisticated electronic circuitry in order to regulate the repulsive forces within a particular electro-magnetic shock dampening configuration. As far as is known by the Inventors, the patent to Theodore represents the most pertinent art which has heretofore appeared.
DE Patent 1211460 in the name of SIEMENS AG is known, which discloses a component, formed by a pin integral with an internal tubular magnet, inserted into an external tubular magnet. The external tubular magnet can move inside a cartouche, coaxial to the two magnets, against a support surface in abutment at one end, and against a spring held by a bush at the other end. This component is also axially guided on a spindle integral with the bush. At each axial end, the component includes a protective sleeve for the fragile ceramic core formed by the internal magnet.
Another Patent, DE 19854063Al, in the name of VLADIMIR JAGMANN is known, which discloses a component made of magnetisable material levitated between two pole pieces, which generate a magnetic field which is always in a perpendicular direction to the pull of gravity, the orientation by working is always the same.
US patent application no. 20120113767, in the name of Montres Breguet S.A. is known, which discloses magnetic and/or electrostatic anti-shock device proposing a configuration for protecting a component, and particularly a timepiece component, pivotally mounted between holding means either with or without contact.
Patent Application Ser. No. 251,118 by Ross et al. and assigned to the assignee of the instant invention is known, which teaches the use of single attractive magnetic forces to suspend and dampen surface supported transportation vehicles such as trains having support trucks. This system has certain drawbacks which are now apparent. The magnets must be energized at all times even when the vehicle is at stand still to provide the required suspension, thus power must be utilized continually for suspension. The magnets must be of large size for their dual purpose which adds increased weight to the

vehicle sprung portion thus reducing the overall payload. The use of a single attractive force field depends on gravity for the balancing force and, therefore, cannot be successfully adapted for use in controlling horizontal movement of the sprung and unsprung portions of a vehicle.
There are several types of commonly-used shock absorbers. Though conventional shock absorbers satisfy basic requirements, a new type of absorber is still needed which is easy to construct, contains less number of component and is safe for the environment.
Thus, in the present invention, magnetic shock absorber utilises simple arrangement of magnets inside a cylindrical casing to absorb forces generated as shock during vehicle motion.
OBJECTIVES OF THE INVENTION
• An object of the present invention is to design a magnetic shock absorber capable of absorbing forces produced during vehicular movement.
• Another object of the present invention is to utilise repulsive forces produced from same poles of magnets for absorbing the heavy shock loads.
• Still another object of the present invention is to maintain neutral position of piston by means of adjusting magnetic forces applied on the piston.
• Yet another object of the present invention is to allow perpendicular motion of a rod in order to dampen the force produced during vehicular movement.
SUMMARY OF THE INVENTION
In accordance with this disclosure there is provided three magnets to be used in this magnetic shock absorber.
According to one aspect of the invention, magnets are mounted in a cylinder having one open end and one closed end.
In other aspect of the invention, two magnets are fixed permanently inside the cylinder, one in top and other in bottom end of the cylinder.

In another aspect of the invention, magnet mounted on the open end of cylindrical vessel is ring shaped capable of allowing piston movement.
In yet another aspect of the invention, third magnet is mounted on the movable rod. This magnet will move up and down vertical direction with the rod.
In still another aspect of the invention, all magnets are fixed in a manner so that same poles are facing each other. This will help to create the repulsive force for absorbing the shock.
In further aspect of the invention, Top end cover is fixed with body of the vehicle by using bolt connections and movable rod is fixed at the end with the axle of the vehicle. When the vehicle experiences the sudden shock, movable rod slides vertically inside the cylinder along with the magnet. The same poles of the fixed and movable magnets are creating the strong repulsive force. This repulsive force is used for absorbing the heavy shock load and magnetic shock absorber will act as a damping device for vehicle. When the heavy shocking load decreases, the movable magnet comes into the original position. The variable Magnet movement depends on the magnitude of the shock load. In this way, this magnetic shock absorber absorbs the heavy load in the vehicle.
In further aspect of the invention, non ferrous/ non magnetic material is used for cylinder so that it will not disturb the magnetic field and magnets inside the shock absorber.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The present disclosure will now be described with reference to the accompanying drawings, in which:
FIGURE 1 illustrates the perspective view of the magnetic shock absorber with the following inclusions:

1. Cylinder having opening at one side.
2. Circular ring shaped magnet.
3. Cylindrical shaped magnet fixed at bottom of cylinder
4. Cylindrical shaped moving magnet placed in between two magnets inside cylinder.
5. Perpendicular rod acting as piston (impregnated in the movable magnet)
DETAILED DESCRIPTION OF THE INVENTION:
The magnetic shock absorber device in accordance with the present invention will now be described with reference to the accompanying drawings, which does not limit the scope and ambit of the disclosure.
Every magnet consists of two poles that are North Pole and South Pole. Like poles that are North - North or South - South always repel each other whereas unlike poles that is North - South will always attract each other. This invention "Magnetic Shock Absorber" utilizes these attractive and repulsive forces of magnets in order to provide cushioning effect like shock absorbers.
Referring to the drawing Figure 1 represents the magnetic shock absorber device. There is a hollow cylinder (1) whose one end that is the base is closed and at this end a permanent magnet of cylindrical shape (3) is fitted with the North pole facing towards the open end of the cylinder. Now the open end of the cylinder is fitted with a circular ring type magnet (2) with South pole facing towards the other end of the cylinder which is closed.
A cylindrical shape moving magnet (4) is placed inside the cylinder with the South pole facing towards the open end and the North pole facing towards the bottom side that is the closed end of the cylinder. This moving magnet (4) is connected through a connecting rod (5) at its top that is South pole side and this connecting rod is passing through the circular opening of magnet (2) at the open end of the cylinder.
This shock absorber can be fitted in any machine by its base and top end of the connecting rod. Whenever the load is exerted on the connecting rod (5) the magnetic piston (4) will slide down in the cylinder (1) but the magnet (3) at the base of the cylinder will force the magnetic piston upwards and the magnet (2) at the top of the

cylinder will force the magnetic piston (4) downwards avoiding the piston hitting the top flange or comming out of the cylinder and this happens due to the repulsive force between the similar poles of the magnets. This action forces the magnetic piston (4) to attain the neutral position that is approximately at the middle of the length of the cylinder (1). This spring like behaviour of the system will provide the cushioning effect.
TECHNICAL ADVANTAGES:
1. Magnetic shock absorber of the present invention will eradicate the problems faced in the spring shock absorbers due to friction and other factors.
2. Magnetic shock absorber of the present invention will reduce the maintenance costs as it does not need repairing, changing of springs or dealing with leakage problems as in spring or oil shock absorbers.
3. Magnetic shock absorber of the present invention can be used in all types of heavy and light motor vehicles.

CLAIMS:
What is claimed is:
1. A magnetic shock absorber consisting of a cylindrical vessel and permanent magnets
2. A magnetic shock absorber as claimed in claim 1, wherein cylindrical vessel is made of non ferrous material like polymer, non-magnetic stainless steel etc.
3. A magnetic shock absorber as claimed in claim 1, wherein magnets used are permanent and a placed in such a way that similar poles facing each other.
4. A magnetic shock absorber as claimed in claim 1, wherein diametenlength of cylinder is in ratio 1:6 respectively.
5. A magnetic shock absorber as claimed in claim 1, wherein rod is impregnated in the cylindrical magnet placed inside the cylinder in between two magnets.
6. A magnetic shock absorber as claimed in claim 1, wherein said shock absorber is part of a suspension for a wheel of an automobile.
7. A magnetic shock absorber as claimed in claim 1, wherein number of magnets can be increased in order to obtain desired magnetic force to dampen the shocks.