Title of Invention | A DEVICE FOR DETECTING AIR FLOW |
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Abstract | This invention relates to device for detecting air flow. It is connectable to compressed air flow systems. It consists of housing (I) provided with a deflectable flap (4) mounted fixedly on one arm of an L shaped spring (5). The other arm is in contact with the body of the housing. Contact means are provided for connection with make and break relay circuit. The other end of the deflectable flap is in contact with an insulated stud means (3). In the absence of air flow, the circuit is in the closed position which makes a green signal light in the circuit to burn. During an" flow, the deflectable flap gets lowered, breaking contact with the relay, which de-energizes the green light but closes the contact for establishing and energizing the red light and hooter means which provide audio and visual signals for correcting the air leak (Figure 1). 5 FEB 2004 - 8 - |
Full Text | THE PATENTS ACT, 1970 (39 of 1970) COMPLETE SPECIFICATION (SEE SECTION 10, RULE 13) TITLE A device for detecting air flow APPLICANTS Tata Motors Limited of Bombay House, 24, Homi Mody Street, Hutatma Chowk, Mumbai - 400001, India, an Indian company The following specification particularly describes the nature of this invention and the manner in which it is to be performed : 5 FEB 2004 This invention relates to a device for detecting airflow This device is capable of detecting air leakage without any delay and has universal application. The device is particularly suitable for detecting air leaks in pneumatic pipelines. Compressed air is the most important energy source in almost all industries. Simple generation and transmission of compressed air makes this source of energy ideal arid convenient for use in many industries. During the use of compressed air as energy souiee, adequate care must be taken to avoid and aires! air leaking Possibility of any leaks going undetected is also high in the event of such leakage occurring at a remote location in the case of long production lines. It is also found difficult to sense release of air from a fixed path tn the case of uncontrolled processes and this indirectly increases the energy bill. The device for detecting air flow has been developed to overcome the above discussed disadvantages and problems for the production of components using press tools, cushion air pressure varies from job to job Batch production of component A may require a certain amount of cushion pressure while batch ptoduction of component B may require relatively less cushion pressure, Under the existing system, big m» reservoirs are provided for supplying large, quantity of compressed air within a short span of time. To reduce die compi essed air pressure according the requirement of the next fob. air pressure is manually released Such manual operations may lead tv massive air loss in case the drain port is not closed properly after new pressure setting is made. The device according to this invention detects air leaks immediately, is cost pffertive »nd **ner«y savins Further, this deviv** is capable of being attached to any existing pneumatic lines. This device is applicable in prewi machines, which requires tush air volume applications. It is also use till as remote area airflow controller tor pneumatic circuit diagnosis and for critical operation interlocks such as clamps jaws and the like. Hie device ibi detecting an ilow aceoidmtf to this invention campuses a bousing collectable to a system for compressed mr flow, an t, shaped spring means, one arm of which is mounted within said housing, the othei aim of said sprite means being disposed horizantal to the axis said bonsing a dellectable llap one and of which is fixedly mounted on said horizontal arm, the other end being m contact with an insulated stud means horizontally disponed on within said honsing and connecting means establishing electrical contacts with a conventional make and break relay circuit provided with audio and visual signal means. This invention will now be descubed with reference to the Insures w the accompanying drawings, in which Fig ) is a srh-matic i-epref!"nt:rf»t>n e! thv device Releienee numb'.*! 1 indicates (he housing, 'lias is provided with connecting means such as female ihieadmgs on both ends for connecting the same to the existing compressed air flow path (this is not shown in the figure). Reference number 2 is an insulated bush means on which an insulated stud (3) is mounted. Stud (3) is disposed horizontally within the housing and is in contact with the deflecting flap (4). L shaped spring means is shown by reference numeral (5) one end of the spring means is welded to the deflectable flap and the other end is in contact with the body of the housing. Reference numeral (6) stands for one connecting means, insulated stud means 3 is the other connecting means and these are in electrical contact with a relay circuit shown in Figs II and III, which are the closed and open positions of the relay. When there is no air flow through the device contact 1 and 2 are in closed position to energize the coil of relay and contacts 3 and 4 are closed and the green lamp shown by G glows, thus indicating that there is no air flow thought the housing. Circuit diagram in Fig III shows the position of the relay circuit when air flows through the housing. When air flows through the device, the deflectable flap tilts downwards generating a gap between the insulated stud and on the flap. This opens the contacts 3 and 4. Change over contacts of relay 1 closes points 3 and 5 while energizing the red indicating lamp and the hooter which gives loud audio signals. These signals alert the operator who in turn does the needful to prevent air leakage. The housing may be made of mild steel, and the insulating bush which holds the insulated stud means may be made of'hylanr which has good insulating properties. ..4.. We claim : 1. A device for detecting air flow comprises a housing connectable to a system for compressed air flow, an L shaped spring means, one arm of which is mounted within said housing, the other arm of said spring means being disposed horizontal to the axis of said housing, a deflectable flap, one end of which is fixedly mounted on said horizontal arm, the other end being in contact with an insulated stud means, horizontally disposed within said housing and connecting means for establishing electrical contacts with a conventional make and break relay circuit provided with audio and visual signal means. 2. The device as claimed in claim 1 wherein said housing is connected to a compressed air flow system through female threadings provided on both ends. 3. The device as claimed in claim 2 wherein said compressed air flow system is a press machine. 4. The device as claimed in claims 1 to 3 wherein the body of the housing is made of mild steel and the connecting means are made of conductive materials. 5. The device as claimed in claims 1 to 4 wherein said signal means is a green light ..6.. |
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1236-mum-2003-abstract(5-2-2004).pdf
1236-mum-2003-abstract-(5-2-2004).doc
1236-mum-2003-cancelled pages(5-2-2004).pdf
1236-mum-2003-claims(granted)-(5-2-2004).doc
1236-mum-2003-claims(granted)-(5-2-2004).pdf
1236-mum-2003-correspondence(27-1-2005).pdf
1236-mum-2003-correspondence(ipo)-(6-10-2004).pdf
1236-mum-2003-correspondence.pdf
1236-mum-2003-correspondence[ipo].pdf
1236-mum-2003-description(granted).doc
1236-mum-2003-description[granted].pdf
1236-mum-2003-drawing(5-2-2004).pdf
1236-mum-2003-form 1(1-12-2003).pdf
1236-mum-2003-form 1(29-12-2003).pdf
1236-mum-2003-form 19(29-12-2003).pdf
1236-mum-2003-form 1[1-dec-2003].pdf
1236-mum-2003-form 1[29-dec-2003.pdf
1236-mum-2003-form 2(granted)-(5-2-2004).doc
1236-mum-2003-form 2(granted)-(5-2-2004).pdf
1236-mum-2003-form 2(granted).doc
1236-mum-2003-form 2[cancelled].pdf
1236-mum-2003-form 2[granted].pdf
1236-mum-2003-form 2[title page].pdf
1236-mum-2003-form 3(1-12-2003).pdf
1236-mum-2003-form 8(29-12-2003).pdf
1236-mum-2003-power of attorney(1-12-2003).pdf
Patent Number | 205267 | ||||||||
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Indian Patent Application Number | 1236/MUM/2003 | ||||||||
PG Journal Number | 31/2008 | ||||||||
Publication Date | 01-Aug-2008 | ||||||||
Grant Date | 23-Mar-2007 | ||||||||
Date of Filing | 01-Dec-2003 | ||||||||
Name of Patentee | TATA MOTORS LIMITED | ||||||||
Applicant Address | BOMBAY HOUSE, 24 HOMI MODY STREET, HUTATMA CHOWK, MUMBAI 400001, MAHARASHTRA, INDIA | ||||||||
Inventors:
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PCT International Classification Number | F17D 5/02 | ||||||||
PCT International Application Number | N/A | ||||||||
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PCT Conventions:
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