US3636680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering apparatus
Assignee: Individual
•
Filing: 1968-09-26
•
Granted: 1972-01-25
•
Expires: 1988-09-26
Abstract
Abstract A filtering apparatus having a single chamber or a plurality of chambers for the cleaning of dust-laden gases by means of flat filter bags. These filter bags are arranged upright and individually twistable at the inside of a casing. The bags are connected by connection rods which are fastened at the narrow side of the bags and for the purpose of cleaning oscillatable in groups around their pivot axes. A filtering apparatus having a plurality of gas flow chambers, and valves operated by a control shaft to close some chambers for cleaning the filter element therein while leaving other chambers open for continuous operation. The cleaning mechanism is electrically operated in synchronism with the control shaft via cam means on the control shaft which actuate switches to operate the cleaning means. A valve structure comprising a plate operated via cam and follower means by the control shaft and including guide rods and slots to allow the valve plate to undergo linear and pivotal movement.
Inventors
- 👤 Gunther Seidel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:32
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/66; B01D46/74; B01D46/76; B01D46/02; B01D46/04; B01D46/42; B01D46/4272; B01D2265/00; B01D2265/02; B01D2265/028; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86445
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
258 words
A filter apparatus comprising a housing forming a gas-flow path having a gas-flow inlet and a gas-flow outlet, a generally flat filter bag having a pair of relatively wide generally parallel sides, mounting means for mounting said filter bag generally upright in said housing, means dividing said gas-flow path into a dust side and a clean side, and providing flow communication therebetween one of said sides being on the outside of the filter bag and the other of said sides being on the inside of the filter bag, said filter bag including a bag frame, said mounting means including bearing means supporting the bag frame for pivotal movement about an axis, passing through the filter bag, a means for connecting the bag to the dividing means loosely and resiliently wherein substantially the entire bag oscillates with the bag frame, a vibrator frame connected to the outside of said filter bag and free from connection with said housing, an oscillating means including a balancing inertia mass mounted on the said vibrator frame, said oscillating means oscillating the filter bag and its bag frame about the said axis to shake the same and hence remove dust from the side of the filter bag facing the dust side of the gas-flow path, said oscillating means being free from any connection with the said housing, except through its said connection with the vibrator frame and the filter bag, whereby the oscillating movements of the oscillating means are transmitted directly through the vibrator frame to the filter bags and not through said housing.
Claim 2
Dependent Claim
258 words
A filter apparatus comprising a housing forming a gas-flow path having a gas-flow inlet and a gas-flow outlet, a generally flat filter bag having a pair of relatively wide generally parallel sides, mounting means for mounting said filter bag generally upright in said housing, means dividing said gas-flow path into a dust side and a clean side, and providing flow communication therebetween one of said sides being on the outside of the filter bag and the other of said sides being on the inside of the filter bag, said filter bag including a bag frame, said mounting means including bearing means supporting the bag frame for pivotal movement about an axis, passing through the filter bag, a means for connecting the bag to the dividing means loosely and resiliently wherein substantially the entire bag oscillates with the bag frame, a vibrator frame connected to the outside of said filter bag and free from connection with said housing, an oscillating means including a balancing inertia mass mounted on the said vibrator frame, said oscillating means oscillating the filter bag and its bag frame about the said axis to shake the same and hence remove dust from the side of the filter bag facing the dust side of the gas-flow path, said oscillating means being free from any connection with the said housing, except through its said connection with the vibrator frame and the filter bag, whereby the oscillating movements of the oscillating means are transmitted directly through the vibrator frame to the filter bags and not through said housing.
Claim 3
Dependent Claim
20 words
A filter apparatus according to claim 1 wherein the oscillating means is enclosed in a dustproof hood in the housing.
Claim 4
Dependent Claim
20 words
A filter apparatus according to claim 2, wherein the housing has a bulge in which is located the oscillating means.
Claim 5
Dependent Claim
18 words
A filter apparatus according to claim 3, wherein the bulge is located in a door of the housing.
Claim 6
Dependent Claim
42 words
A filter apparatus according to claim 3, wherein said bulge surrounds a portion of the oscillating means and wherein a portion of the bulge is covered by an open dustproof member connected to the remainder of the bulge by a flexible collar.
Claim 7
Dependent Claim
42 words
An apparatus according to claim 1 including a plurality of said filter bags arranged side by side with the said relatively wide sides facing each other, said vibrator frame connected to all of said filter bags to oscillate all of them simultaneously.
Claim 8
Dependent Claim
48 words
A filter apparatus according to claim 6, wherein the side axis of the filter bags lies in a plane which plane extends transversely relative to the large generally wide sides of the filter bags, the center of gravity of the plurality of filter bags lying in this plane.
Claim 9
Dependent Claim
63 words
A filter apparatus according to claim 7 wherein the said axis of each bag extends in a plane generally parallel to the said wide sides of the filter bags and extends at an angle to the vertical, and wherein the said vibrator frame is attached to those vertical sides of the filter bags which are closest to the lower end of said axis.
Claim 10
Dependent Claim
30 words
A filter apparatus according to claim 6, wherein the said axis of the filter bags are generally horizontal and lie in a plane generally parallel to the said wide sides.
Claim 11
Dependent Claim
24 words
A filter apparatus according to claim 9, wherein the vibrator frame and the oscillating means are located at the bottom of the filter bags.
Claim 12
Dependent Claim
96 words
A filter apparatus according to claim 10 wherein the said dividing means includes a fixed opening at the said gas-flow outlet for each filter bag, said mounting means including a means for connecting the top of each filter bag to one of said fixed openings, the last said means including a flange surrounding and attached to the upper opening of the bag, and a claw element extending upward from said flange, said claw arranged to engage a fixed opening and hence guide the filter bag into place when the filter bag is introduced into the housing.
Claim 13
Dependent Claim
26 words
A filter apparatus according to claim 11, wherein the end of the claw which extends upwardly from the flange into said fixed opening is wedge shaped.
Claim 14
Dependent Claim
19 words
An apparatus according to claim 11, wherein the flange is bent convexly in the direction away from the bag.
Claim 15
Dependent Claim
28 words
A filter apparatus according to claim 6, wherein the said axis of the filter bags are located on one of the vertical narrow sides of the filter bags.
Claim 16
Dependent Claim
37 words
A filter apparatus according to claim 14, wherein the vibrator frame and the oscillating means are located at the vertical narrow sides of the filter frames opposite from the said narrow sides which contain the swivel axis.
Claim 17
Dependent Claim
82 words
A filter apparatus according to claim 6, wherein the said dividing means includes a fixed opening at said gas-flow outlet for each filter bag, and said mounting means including a means for connecting the top of that filter bag to one of the said fixed openings, the last said means including a flange surrounding and attached to the upper opening of each bag, the said connecting means including a flexible collar connecting the main part of each filter bag to this flange.
Claim 18
Dependent Claim
26 words
A filter apparatus according to claim 16, wherein the said axis extends horizontally along the top of the filter bag parallel to the said wide sides.
Claim 19
Dependent Claim
55 words
A filter apparatus according to claim 16, wherein portions of each filter bag extend upwardly above the flexible collar on each side of the swivel axis, said portions being positioned to abruptly engage a part of said fixed opening during each oscillation to further assist in shaking dust from the surface of each filter bag.
Claim 20
Dependent Claim
55 words
A filter apparatus according to claim 16, wherein the vibrator frame includes extensions extending to the sides beyond the filter bags, and including adjustable stops located on the housing in the path of the extensions, whereby during each oscillation, the extensions abruptly engage the stops to assist in shaking dust loose from the filter bags.
Claim 21
Dependent Claim
246 words
A filter apparatus comprising: a housing having means forming a plurality of gas-flow paths, each including a gas-flow inlet and a gas-flow outlet, a filter bag in each gas-flow path, means dividing each said gas-flow path into a dust side and a clean side and means supporting the filter bag wherein the gas flows through the inlet and through the filter bag from the dust side to clean side, and through the outlet, one of said sides being on the outside of the filter bag and the other of said sides being on the inside of the filter bag, a valve means closing each said outlet, a continuously cyclically operable control means including a continuously operating mechanical means operatively connected to said valve means to cyclically open and close said outlets in sequence, means for mounting the valve means in the housing for movement relative to the control means, said mounting means further including only resilient connections for connecting the valve means to the housing, the entire valve means thus being movable linearly relative to the housing, against the outlet under the force of the control means to close the outlet tightly, and separate means including a vibrator for vibrating the filter bag in each flow path, each vibrating means being operable to vibrate its respective filter bag to clean the same in response to the said cyclically operable control means when the outlet of its respective gas-flow path is closed by the said valve means.
Claim 22
Dependent Claim
246 words
A filter apparatus comprising: a housing having means forming a plurality of gas-flow paths, each including a gas-flow inlet and a gas-flow outlet, a filter bag in each gas-flow path, means dividing each said gas-flow path into a dust side and a clean side and means supporting the filter bag wherein the gas flows through the inlet and through the filter bag from the dust side to clean side, and through the outlet, one of said sides being on the outside of the filter bag and the other of said sides being on the inside of the filter bag, a valve means closing each said outlet, a continuously cyclically operable control means including a continuously operating mechanical means operatively connected to said valve means to cyclically open and close said outlets in sequence, means for mounting the valve means in the housing for movement relative to the control means, said mounting means further including only resilient connections for connecting the valve means to the housing, the entire valve means thus being movable linearly relative to the housing, against the outlet under the force of the control means to close the outlet tightly, and separate means including a vibrator for vibrating the filter bag in each flow path, each vibrating means being operable to vibrate its respective filter bag to clean the same in response to the said cyclically operable control means when the outlet of its respective gas-flow path is closed by the said valve means.
Claim 23
Dependent Claim
89 words
A filter apparatus according to claim 20, said control means including a rotatable control shaft operatively connected to said valve means for operating the same, cam means operatively connected to said shaft for rotation therewith, said vibrating means being electrically operated, and including a switch means for controlling the timing of the operation of each vIbrating means, said switch means being selectively operated by said cam means upon rotation of said shaft, the operation of the vibrating means thus being synchronized relative to the operation of the valve means.
Claim 24
Dependent Claim
27 words
The invention of claim 21 including a disc attached to the shaft to rotate therewith, said cam means comprising a raised cam surface fixed onto the disc.
Claim 25
Dependent Claim
58 words
The invention of claim 21, including a rod mounted in said apparatus to reciprocate back and forth, said valve means including a valve member mounted on the rod to reciprocate therewith, to open and close the paths and a lever connecting the rod with the rotatable shaft such that rotation of the shaft causes reciprocation of the rod.
Claim 26
Dependent Claim
44 words
The invention of claim 23 including a disc attached to the shaft to rotate therewith, said cam means comprising a raised cam surface on the outer circumferential periphery of the cam disc, and said lever pivotally connected to a lateral surface of the disc.
Claim 27
Dependent Claim
70 words
The invention of claim 23 wherein said valve member on the rod is operatively associated with two of said paths, said valve member closing one of the paths at one end of its reciprocating movement with the rod and closing the other path at the other end of its reciprocating movement with the rod and said resilient connection is included in the connection between the rod and the valve member.
Claim 28
Dependent Claim
34 words
The invention according to claim 21 each path including a valve seat and a separate valve member, and each said valve member being mounted for oscillating movement on and off of its respective seat.
Claim 29
Dependent Claim
81 words
The invention according to claim 26 wherein said valve means are mounted to be reciprocated towards and away from their respective valve seats, and including a main shaft rotatable with the control shaft, a connecting rod connecting each valve member with the main shaft, said connecting rod being connected to the main shaft by offset crank means, such that rotation of the main shaft causes back and forth movement of the connecting rod, and hence reciprocating movement of each valve member.
Claim 30
Dependent Claim
45 words
The invention of claim 27 wherein said main shaft is coaxial with and is connected to the control shaft, and including a disc attached to the control shaft to rotate therewith, said cam means comprising a raised cam surface on the surface of the disc.
Claim 31
Dependent Claim
19 words
The invention of claim 21 wherein means resilient includes means for adjusting the tightness of the closing valve member.
Claim 32
Dependent Claim
93 words
The invention of claim 26, each said valve member associated with each path being mounted to be moved towards and away from its seat, a main shaft rotatable with the control shaft with the valve members, cams on the main shaft and corresponding cam followers on the valve member, said resilient connection including means acting on the valve members for causing contact between the cams and followers, whereby rotation of the main shaft causes relative movement between the cams and followers to open and close the valve members relative to their valve seats.
Claim 33
Dependent Claim
54 words
The invention of claim 30 wherein each of said valve members mounted for pivotal movement about an axis, and a spring urging the valve member away from the valve seat, and said cam including a raised area for overcoming the force of the spring and urging the valve member closed onto the valve seat.
Claim 34
Dependent Claim
81 words
The invention of claim 20, wherein said valve means includes a cam for each outlet mounted for rotation with the control means, a valve member for each outlet, said valve member being mounted for pivoting movement about a pivot axis to open and close its outlet, a cam follower attached to each valve member at the center of force of the valve member, and the follower being positioned to be acted on by its corresponding cam to close the valve member.
Claim 35
Dependent Claim
76 words
The invention of claim 32 including a pivot rod for each said valve member, said resilient connection connecting each valve member to the pivot rod to assure pivoting movement of the valve member with the Rod and also permitting reciprocating movement between the valve member and the rod during the opening and closing, such that the valve member can move linearly towards the outlet in the direction of the force supplied to it by the cam.
Claim 36
Dependent Claim
50 words
The invention of claim 33 wherein said resilient connection comprises an elastic intermediate element connecting the valve member to the pivot rod and cooperating guide rods and slots on the valve member and the pivot rod, such that the valve member turns with the pivot rod and slides relative thereto.
Claim 37
Dependent Claim
45 words
The invention of claim 32 said resilient connection further including means for urging the cam and follower into engagement with each other, tending to open the valve member, so that opening and closing of the valve member is dependent upon the contour of the can,
Claim 38
Dependent Claim
52 words
The invention of claim 35 wherein the cam contour is shaped so that the portion of the rotating cam required for opening and closing movement of the valve member is minimized and the portion of the rotating cam required for the period during which the valve remains open or closed is maximized.
Claim 39
Dependent Claim
41 words
The invention of claim 32 wherein the valve member is a generally flat plate, the follower is mounted above the plate, and the plate includes a recess positioned to receive the cam during a portion of the rotation of the latter.
Claim 40
Dependent Claim
19 words
The invention of claim 37 including means for varying the distance of the cam follower from the valve member.
Claim 41
Dependent Claim
37 words
The invention of claim 38, the last said means including a lever attached to the valve member, the follower being attached to the lever, and means for varying the distance between the valve member and the lever.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |