|Publication number||US3736900 A|
|Publication date||5 Jun 1973|
|Filing date||10 Jan 1972|
|Priority date||10 Jan 1972|
|Publication number||US 3736900 A, US 3736900A, US-A-3736900, US3736900 A, US3736900A|
|Original Assignee||R Nowicki|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (8), Referenced by (5), Classifications (8)|
|External Links: USPTO, USPTO Assignment, Espacenet|
e Elmte 1 States Patent 1191 1111 3,736,@
Nowicki 1 1 June 5, 1973 541 CARBURETOR AIR INTAKE FILTER 2,779,305 1/1957 Dunkelman ..116/67 Inventor: Raymond ow ki, 30 Linn ';/1960 G oodall et al. ..210/90 X [1968 P1erce ..55/274 X Road Nuflfiy 071 10 3,529,407 9 1970 Nowicki ..55 274  Filed: Jan. 10, 1972 3,540,407 11/1970 McG0nagle..... 16/70 3,587,212 6/1971 Nowicki 155/274 [211 APPl- 216,365 3,699,749 10 1972 Nowicki ..55/274  U.S. Cl ..116/70, 55/274, ll6/DIG. 25, Primary ExaminerL0uis J. Capozi 210/90 511 1m. 01. ..G0ll 19/12 57 ABSTRACT  Field of Search ..l16/67,65, 114 AD,
'1 16/124, 1 17, 124 D, 70, DIG. 25;,210/90, An annular pleated filter element w1th a v1brat1ng-reed 184/] 55/274 277 270 521, DIG 4 warning device clamping ends of the filter paper and being bonded to end gaskets.  References Cited UNITED STATES PATENTS 6/1932 Smith ..55/274 1 Claim, 4 Drawing Figures CARBURETOR AIR INTAKE FILTERS This invention relates to air filters. An annular pleated filter with a anti-pollution warning device in combination with a filter paper coupler coupling the free ends of the pleated filter paper completing an air filter circle which is bonded to the top and bottom end gaskets.
Automobile owners, service stations and repair shops have no way to determine the condition of automobile and truck carburetor air intake filters, a major cause of excessive exhaust fumes. The only means they have to determine the condition of auto air filters is compressed air hoses and a drop light. This has been the only way to determine the condition of a carburetor air intake filter to see if it is up to manufacturers specifications and in need of replacement, and in the mean time automobiles and trucks are burning excessive gas, excessive oil, have a loss of power, and engine failure which causes many accidents on the road. Unecessary wear on the engine, improper mixture of air and fuel are major causes of carburetor fires, and also cause excessive smoke from the exhaust system.
It is therefore an object of this invention to improve carburetor air intake filter elements with a combination vacumn sensing sound producing vibrating warning reed coupler which is in combination with a filter paper coupler, coupling the free ends of the pleated filter paper. The device is to warn the operator ofa motor vehicle which is being operated that it is emitting excessive exhaust fumes due to a clogged carburetor air intake filter element which needs immediate replacing. The warning sound from the combination vacumn sensing sound producing vibrating warning reed and coupler will only sound off when the carburetor air intake drops below automobile manufacturers specifications. With the running of the engine the warning sound will indicate that the carburetor air intake filter is clogged and the warning device will continue to sound until the carburetor air intake filter element is replaced with a new one.
These prominent objects are accomplished by the novel construction and arrangement of parts hereinafter described and shown in the accompanying drawings constituting an essential component of this disclosure, and in which:
FIG. 1 illustrates my improved carburetor air filter element in combination with an anti-pollution warning device which is a combination warning post and filter paper free end coupler.
FIG. 2 shows a disassembled view of the device and its components.
FIG. 3 shows the free ends of the filter paper coupled to the flexible clamping jaws and the outer restriction screens positioned into the channels.
FIG. 4 is a sectional view of the assembled position of the components.
Referring in greater detail to the drawings the device in FIG. 1 will be seen to consist of a carburetor air intake filter element in combination with an auto air pollution warning post coupler 16 having a pair of flexible clamping jaws 19 on each side of warning post coupler 16 for the purpose of clamping and securing the free ends of the filtering paper 20 completing a filtering circle which is then bonded to the top and bottom end gaskets 21 preventing by-pass of air. A clearer view of the flexible clamping jaws 19 is shown in FIG. 3. FIG. 2 the warning post coupler 16 having an aperture 17 therethrough has within said aperture 17 an annular inner shoulder 28. Seated on the annular inner shoulder 28 is a dust protective stainless steel silk screen 22 extending across the aperture and seated on the protective silk screen is an O-ring spacer 23 overlaying the inner shoulder 28. Having seated on the O-ring spacer 23 and supported within the aperture 17 is a precalibrated vacumn sensing sound producing vibrating warning reed 24 which is press fitted into said aperture 17 followed by a flexible dust protective cover 25 which is seated and supported within the circular reed 24. The flexible dust protective cover 25 is of any suitable material such as thin paper, and is for the purpose of closing off all air suction through the aperture 17 until the air filter 15 becomes clogged. When the air filter 15 becomes clogged the suction of air will then force the dust protective cover 25 out of the vibrating reed 24 thereby permitting the suction of air through the aperture 17 and will then activate the vibrating warning reed 24 producing a warning sound indicating a clogged air filter. The device 16 having two pairs of channels 27 into which outer restriction screens 26 are inserted into for the purpose of reducing dust and foreign matter from coming in contact with the dust protective stainless silk screen 22 which is supported within the aperture 17. Referring to FIG. 3 the flexible clamping jaws 19 on each side of the warning device 16 shows how the free ends of the filtering paper 20 are clamped and secured into position. The outer restriction screens 26 are shown inserted into the channels 27. A more clearer view is shown in FIG. 4.
It is to be understood that the device and warning reed will vary in size and design to accomodate different sizes and designs of air filters. With the device installed and in operation in its factory specified carburetor base and housing it will produce a warning sound when in need of replacement.
From the foregoing it will be seen that a novel unusually practical device for the purpose has been shown and described in its best known embodiments.
What is claimed as new and sought to secure by Letters Patent is:
1. An anti-pollution warning device in combination with an air intake annular pleated filter element comprising of a warning post coupler device having an aperture therethrough with a recessed annular inner shoulder, seated on the annular inner shoulder is a dust protective silk screen extending across the aperture, an O-ring spacer seated on the silk screen and overlaying the shoulder, seated on the O-ring spacer is a precalibrated vacumn sensing sound producing vibrating reed secured within the aperture, seated and supported within the reed is a flexible dust protective cover, the flexible dust protective cover is for the purpose of closing off all air suction through the aperture until the air filter becomes clogged, when the air filter becomes clogged the suction of air will then force out the flexible dust protective cover out of the reed thereby permitting the suction of air through the aperture and will then activate the vibrating warning reed producing a warning sound indicating a clogged air filter, the device having two pairs of channels into which outer dust and foreign matter restriction screens are inserted, each side of the warning post coupler having a pair of flexible self-clamping jaws, the free ends of the pleated filtering paper being positioned between the flexible jaws, whereby the free ends of the filter paper are clamped and secured in position a dusttight coupling, the completed filter ring paper 'circle with the device being bonded to the top and bottom end gaskets of filter.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US1863456 *||7 Jul 1930||14 Jun 1932||Smith Frank||Air filter|
|US2779305 *||5 Oct 1955||29 Jan 1957||Gen Electric||Audible signalling means for clothes dryer lint traps|
|US2943446 *||4 Oct 1956||5 Jul 1960||Rolls Royce||Means sensitive to changes in the effective restriction of a restrictive element in a flow conduit|
|US3397395 *||20 Sep 1965||13 Aug 1968||Gen Motors Corp||Filter condition indicator|
|US3529407 *||26 May 1969||22 Sep 1970||Raymond M Nowicki||Carburetor air intake filters|
|US3540407 *||9 Jan 1969||17 Nov 1970||Fram Corp||Monitoring positive crankcase ventilating systems in internal combustion engines|
|US3587212 *||1 Jul 1970||28 Jun 1971||Nowicki Raymond M||Carburetor air intake filters|
|US3699749 *||18 May 1971||24 Oct 1972||Raymond M Nowicki||Automobile carburator air intake filters|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4162660 *||29 Jun 1978||31 Jul 1979||Albertson Robert V||Dirty air filter indicator|
|US4365582 *||24 Nov 1980||28 Dec 1982||Illinois Tool Works Inc.||Differential pressure signal device|
|US4747364 *||5 Aug 1986||31 May 1988||Filter Alert Corporation||Flow rate threshold sensor|
|US5352255 *||5 Apr 1993||4 Oct 1994||Taft Andrew A||Noise maker for air filter|
|US6412435 *||26 Dec 2000||2 Jul 2002||Ronald G. Timmons, Jr.||Dirty filter indicator|
|U.S. Classification||116/70, 116/DIG.250, 96/419, 210/90|
|Cooperative Classification||Y10S116/25, F02M35/09|