Leather Processing
A high impact gravity breaker and a method for efficacious breaking with minimum space footprint
The run of mine coals/ores are crushed before being processed. Generally, jaw crushers, roller crushers, etc. are the commonly used crushers that impact from different directions. The rotary breaker, on the other hand, breaks the mineral due to gravity, breaking at points of weakness such as foliation, cracks, etc. However, the rotary breaker has limitations such as on the size of its diameter, passing out of undersized particles without being crushed further, etc. The new device is an elliptical rail parallel rings on which the interconnected carrier assemblies move. The height of the device is such that the fall can be increased without significantly increasing the width. As the impact plate is fixed, it can effectively break more particles. The carrier plate acts as a screen and passes out all undersized particles, instantly. The lifting plates and deflecting plates guide and control the movement of particles from the feed end to the rejection end. Indian Patent application no. 202011028781
A novel surface applicator for coating flexible substrates
A novel surface applicator for coating flexible substrates which utilizes a juxtaposed conveyor system capable of being operated in either direction using a single power source, for causing movement, for a predetermined time, to the material the surface of which is to be coated with a liquid / paste kept in a contained resulting in surface coating of the flexible substrate without involvement of any manual operation.
The invention has been applied for Patent protection (Indian Patent application no. 967DEL2002;Patent pending)

An improved tanning device
The main feature of this device lies in providing an oscillating outer shell and transferring its rocking action to the inner vessel, that is subjected to an additional rotational movement with the help of gear and pinion and by the weight acting on the shelves contained in it, through the rollers on which it is positioned, thereby avoiding the presence of any moving part linked with the inner vessel, ensuring the absence of either wear & tear or loss of pressure generated in the device, resulting ultimately in the economy of energy consumption, capacity utilization, time and human labour, with uniform absorption of chemicals while processing leathers. The device finds potential application in leather processing industry for pretanning as well aspost tanning wet operations.
The invention has been applied for Patent protection (Indian Patent application no. 791DEL2000; Patent pending).

A novel solid separator useful for separating solid particles from any flexible substrate such as skins and hides
This is a novel device for separating solid particles such as salt mechanically from the surface of a solid substrate such as raw hides/ skins. It has enormous potential application in leather industry as a mechanical desalting device for raw hides/ skins. The main advantages of the present invention are the following. The unique features and advantages associated with the device are the following.

Raw materials can be dropped through the chute and the desalted material is collected at the rear end, thereby reducing the fatigue involved in manual desalting. The removed salts are collected separately without any wastage in a collector. The percentage of salt removed is very high, when compared to other methods.
The invention has been applied for patent protection (Indian patent application no. 788Del2006; Patent pending).

A device for solid-liquid extraction
Disclosed herein is an ultrasound assisted extractor device for application in efficient extraction of the active ingredients present in a solid substrate. It finds significant industrial application in extracting vegetable tanning, natural dyes, etc. from plant or other natural materials. It is also useful in leather processing industry to carry out different unit operations, such as vegetable tanning, retanning, dyeing, etc. with better efficacy. It enables efficient extraction of tannin/dye from source substrate and simultaneous complete diffusion of the same in the hide/skin, leading to a significant time economy in leather processing. Indian Patent application no. is 201711017991.

Environment Technology/Waste utilization related
  A novel hood for exhausting gas
Disclosed herein is a novel hood for exhausting gas. It essentially relates to a novel design of a hood that enables collection of gas that is tailored to escapes into the air much faster. It finds application as an exhaust aid in several processing industries, such as chemical, food, dairy, cooking and leather processing industry, to ensure easy and effective exhaust of the gasses generated during the processing. It enables odorous gasses to escape in the air very fast, thereby proving an odour abatement option for processing industries. Thus, the hood particularly finds major application in leather processing industry for removal of gases from tanning drums to ensure odour free tannery environment. Indian Patent application no. is 201711002870.
High air circulating Rotating Biological Contactor
Disclosed herein is a high air circulating Rotating Biological Contactor (RBC), an effective biological wastewater treatment system based on aerobic cell growth. RBC is basically a cylindrical drum in a rectangular tank comprising plurals of circular plates for the microbes to attach and grow. However, in the tank there are areas where anaerobic condition is created. This situation is not favorable for the growth of aerobic microorganisms. Therefore, prevention of this anaerobic condition is essential in the operation of RBC.
The invention specifically addresses the issue of removal of the anaerobic condition within the RBC, providing a cost efficient system. Aeration, which results in fast growth of microorganisms leading to effective treatment, is enabled in the RBC through plurals of holes in every pipe. Strengthening of the RBC is ensured by the exterior pipes. The invention finds application in the wastewater pollution control industries for an efficient way of treating the polluted wastewater. Indian Patent application no. is 201611033415.
Two Stage Pyrolysis Cum Controlled Incineration Device And Process For The Conversion Of Leather Solid Waste Using The Same
Disclosed herein is Two Stage Pyrolysis Cum Controlled Incineration Device and a method of incineration of leather solid waste to generate clean gaseous fuel and other byproducts. (Indian Patent application no. 795Del2014).
A Novel Fluidized Bed Reactor for treatment of Waste Water
The conventional waste water treatment methodologies, which comprise multiple unit operations, require high electrical energy and generate huge volume of sludge along with odor. The present invention is able to obviate these limitations by providing a new fluidised bed reactor. The act of fluidisation maintains uniform mixing of carbon catalyst immobilised with microorganisms throughout the reactor volume for effective wastewater treatment. The improved design facilitates the generation of very less quantity of sludge. Further, the problems of chocking of pipe line, normally envisaged in conventional systems, are completely eliminated in the new device. The exhausted odor gas venting out of the reactor can be easily purified externally before it is discharged into the environment. The reactor, which requires a minimum space, is envisaged to play a major role in solving problems relating to environmental pollution arising out of the waste water discharged from various processing industries as ell as domestic sources. The invention has been applied for patent protection (Indian Patent application no. 2728Del2012).
An improved transportable device for flaying of dead animals
An improved transportable device for flaying of fallen animals from rural and urban areas has been innovated. The design features are exclusive for lifting and flaying of dead animals. The device is mechanized vehicle which uses power transmission system for loading, hoisting for flaying, carrying and unloading of the fallen animals. It has several advantages, in view of its (a) easy operability (b) reduction in time for flaying (c) provision for carrying and unloading two large or three small dead animals after flaying (d) hydraulic or mechanical system which increases efficiency (e) drastic reduction (by 50 %) for capital investment (f) designed exclusively for flaying of dead animals. The invention has been applied for patent protection (Indian Patent application no. 269DEL2011).
A novel scouring device for industrial applications
The device consists of a storage vessel with an arrangement to induce dabbling effect on unclean feed stock, perforated floor for separating the grit and other foreign materials from the feed stock and a heating arrangement which enables denaturing of cleaned feed stock. The device uses water for separating the grits. The used water from the scouring device can be reused both in the scouring process as well as downstream processes and the rejects like gritty materials, etc can be disposed safely as per statutory norms.
The invention has been applied for Patent protection (Indian Patent application no. 2136DEL06).

A novel transportable device for lifting and flaying animals
A novel transportable device for lifting and flaying animals has been developed. The device can be fitted on the rear side of a vehicle and can be operated by a flayer cum driver to lift the animal and also flay the hide if the animal is dead. This device has several advantages over the existing methods presently used for lifting animals. The device has tremendous potential to improve the availability of quality hides from fallen animals to Indian leather industry if used by flayers and their societies in the country. The device also ensures proper collection of the remaining parts of the carcass for further processing into value-added products like bone meal, meat meal, tallow etc.
The invention has been applied for Patent protection (Indian Patent application no. 0200DEL2007;Patent pending).

Medical Devices
  A method for measuring gas permeability of any solid permeable material and a device therefor.
The invention provides an equipment to measure the gas permeability of a solid permeable material. The gas permeated through the material is collected in a solvent and the amount of gas permeated is estimated. The equipment measures the gas permeability of any solid permeable membrane with different thickness. It enables measuring the gas permeability of all types of ophthalmic lenses with different thickness and radius of curvature. The process as well as equipment of the present invention is envisaged to have enormous potential applications in the pharmaceutical industry particularly contact lens manufacturers for calculating the accurate oxygen permeability values of the ophthalmic lens, which is an essential requirement for the ophthalmic lens. It has also potential application in measuring the gas permeability of gas masks used for mining as well as other different industrial purposes. In addition, the present invention finds potential application in food processing as well as packaging industry, where the permeability of plastic films to gases like oxygen, ethylene and flavour components is of particular interest. Moreover, the equipment of the present invention has also potential application in the agricultural sector for measuring gas permeability of the materials used in fumigation. The invention has been applied for patent protection (Indian patent application no. 230Del2006; Patent pending).

NMR Devices

Testing Device
A two-dimensional shape deformation device
The invention relates to A two-dimensional shape deformation device, in which a plus shaped sample is stretched in mutually perpendicular directions simultaneously to monitor the strain with time and also the shape deformation behaviour of any sheet material in both axes. The incorporation of a unique locking mechanism enables loading of the sample in four directions. Moreover, the device enables monitoring the morphological characteristics and surface features using a computer/software compatible camera. In view of this advantage, the present device provides the closest approximation to the in situ shape deformation/ plastic set/failure of the materials, creep, and creep fatigue studies in conjunction with the morphological characteristics. The device is also useful for studies on refractive index and birefringence as a function of two-dimensional strains. This device has enormous potential industrial application for selecting right kind of materials for producing various value added products by analysing the material behaviour under different simulated stress conditions. Hence, it is envisaged to play a major role in quality control as well as materials management in respect of such prominent industries as leather products, footwear, textile, polymeric industry to name but a few.

The invention has been applied for patent protection (Indian Patent application no. 806Del2007; Patent pending).
A Fatigue resistance testing device.
Described herein is a testing device having application in the footwear industry to test the fatigue resistance. It is a simple device that works on a motor and crank mechanism to give forward and backward motion to produce a flexing effect on the test sample. It ensures that the features such as human visual and operation requirements are met during the testing process. The walking simulation, ensured by the testing process, plays a major role in improving the efficacy as well as reliability of the test result. This device can be useful for testing the fatigue resistance of the footwear insole fabricated along with the steel shank in a walking simulated condition. Indian Patent Application No. 202211012415

For Further Information Please Contact

Head, Knowledge Portfolio Management Department (KPMD)

CSIR-Central Leather Research Institute,
Adyar, Chennai - 600 020
Tel: +91 44 24437273