Patents Assigned to DIRECTOR GENERAL, DEFENCE RESEARCH & DEVELOPMENT ORGANISATION (DRDO)
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Patent number: 11221196Abstract: A vehicle for detecting and neutralizing an incendiary object comprises a detecting device configured to mount at fore-end of the vehicle is disclosed. The detecting device comprises: one or more platforms configured to be mounted at the fore end of the vehicle. The one or more platforms are located proximal to the ground surface such that they hover over the ground surface at a predetermined distance. A plurality of sensors wherein each of the plurality of sensors mounted on the at least one of the one or more platforms for capturing information related to the incendiary object. A neutralizing device interfaced with the detecting device, wherein the neutralizing device comprises: a neutralizing arm member which actuates in one or more directions for handling and neutralizing the incendiary object based on the information related to the incendiary object. An annihilator device equipped with the neutralizing device to annihilate the incendiary object.Type: GrantFiled: March 29, 2016Date of Patent: January 11, 2022Assignee: DIRECTOR GENERAL, DEFENCE RESEARCH & DEVELOPMENT ORGANISATION (DRDO)Inventors: Natesan Babu, Alexander Rajasekaran, Swarna Ramesh, Lakshmi Prathibha Perumal Thirunavukkarasu
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Patent number: 10978812Abstract: Embodiment of the present disclosure relates to a shared aperture antenna for continuous transmission of signal to ground station at two different spot frequencies. The antenna provides a broad side radiation pattern for frequency range of S band and squinted radiation pattern for frequency range of Ka band. The dual band microstrip antenna is configured on a single layer substrate, having a rectangular slot at small offset from the center on low frequency radiating patch. The positioning of radiating patch and length of high impedance microstrip feed are adjusted to fit into the slot and to get desired squint at high frequency. Two separate coaxial feeds are provided to excite the antenna independently. Third feed fulfil the termination needed by travelling wave array which increases the impedance bandwidth of antenna. A radome is provided to protect the radiating element from environment.Type: GrantFiled: October 12, 2017Date of Patent: April 13, 2021Assignees: DIRECTOR GENERAL, DEFENCE RESEARCH & DEVELOPMENT ORGANISATION (DRDO), MINISTRY OF DEFENCE, GOVT. OF INDIAInventors: Sachin Jain, Siva Rami Reddy G, Pummy Ratna, Usha P. Verma
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Publication number: 20190252798Abstract: Embodiment of the present disclosure relates to a shared aperture antenna for continuous transmission of signal to ground station at two different spot frequencies. The antenna provides a broad side radiation pattern for frequency range of S band and squinted radiation pattern for frequency range of Ka band. The dual band microstrip antenna is configured on a single layer substrate, having a rectangular slot at small offset from the center on low frequency radiating patch. The positioning of radiating patch and length of high impedance microstrip feed are adjusted to fit into the slot and to get desired squint at high frequency. Two separate coaxial feeds are provided to excite the antenna independently. Third feed fulfil the termination needed by travelling wave array which increases the impedance bandwidth of antenna. A radome is provided to protect the radiating element from environment.Type: ApplicationFiled: October 12, 2017Publication date: August 15, 2019Applicant: DIRECTOR GENERAL, DEFENCE RESEARCH & DEVELOPMENT ORGANISATION (DRDO)Inventors: Sachin JAIN, Siva Rami REDDY G, Pummy RATNA, Usha P. VERMA
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Patent number: 9754427Abstract: Embodiments of the present disclosure disclose a Black box with Satellite Transmitter (BSAT) for underwater vehicles. The BSAT provides a mission data backup of sunken under water vehicles and it is akin to a black box recorder of aircrafts. The BSAT comprising a sealed enclosure to receive and transmit IR and electromagnetic signals, a Global Positioning System (GPS) with an antenna to provide GPS parameters of the BSAT, a transmit antenna to transmit the GPS parameters and parameters associated with the underwater vehicle, an ejection mechanism to eject the BSAT from the underwater vehicle on detecting a pre-defined condition, by an electronic controller. The electronic controller to perform at least one of sending control signals, communicating using IR transceiver, acquire and store underwater vehicle parameters, identifying an ejection instant, acquiring and storing data GPS parameters, scheduling data transmission through a satellite after ejection of the BSAT from the underwater vehicle.Type: GrantFiled: July 30, 2014Date of Patent: September 5, 2017Assignee: THE DIRECTOR GENERAL, DEFENCE RESEARCH & DEVELOPMENT ORGANISATION (DRDO)Inventors: Varughese Abraham, Mailapalli Nirmala, Prasad Parvathaneni Shiva, Attara Sanjay, Chakraborti Debasish
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Publication number: 20160171790Abstract: Embodiments of the present disclosure disclose a Black box with Satellite Transmitter (BSAT) for underwater vehicles. The BSAT provides a mission data backup of sunken under water vehicles and it is akin to a black box recorder of aircrafts. The BSAT comprising a sealed enclosure to receive and transmit IR and electromagnetic signals, a Global Positioning System (GPS) with an antenna to provide GPS parameters of the BSAT, a transmit antenna to transmit the GPS parameters and parameters associated with the underwater vehicle, an ejection mechanism to eject the BSAT from the underwater vehicle on detecting a pre-defined condition, by an electronic controller. The electronic controller to perform at least one of sending control signals, communicating using IR transceiver, acquire and store underwater vehicle parameters, identifying an ejection instant, acquiring and storing data GPS parameters, scheduling data transmission through a satellite after ejection of the BSAT from the underwater vehicle.Type: ApplicationFiled: July 30, 2014Publication date: June 16, 2016Applicant: THE DIRECTOR GENERAL, DEFENCE RESEARCH & DEVELOPMENT ORGANISATION (DRDO)Inventors: Varughese ABRAHAM, Mailapalli NIRMALA, Prasad PARVATHANENI SHIVA, Attara SANJAY, Chakraborti DEBASISH
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Patent number: 9017580Abstract: The present invention relates to polymer composite materials, more particularly relates to composite materials with tailor made surface electrical resistivities in the range of 109 to 10?1 ?/sq. and process of making the same. The process for preparing Fiber Reinforced Polymeric (FRP) Composite, said process comprising acts of homogeneously mixing 1-30% by weight of different electrically conducting fillers in matrix resin system to obtain resin mix; wetting dry preforms using the resin mix; compacting the wetted preforms to obtain green composite; curing the green composite; and post-curing the cured composite to prepare the FRP Composite.Type: GrantFiled: November 22, 2010Date of Patent: April 28, 2015Assignee: The Director General, Defence Research & Development Organisation (DRDO)Inventors: Samudra Dasgupta, Madishetty Narayana Rao Jagdish Kumar, Sundaram Sankaran