US3928008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering apparatus
Assignee: Individual
•
Filing: 1974-08-05
•
Granted: 1975-12-23
•
Expires: 1994-08-05
Abstract
Abstract An air filtering apparatus having a housing with an air passage separated with a bulkhead into an inlet chamber and a filtering chamber. A motor driven blower located in the inlet chamber moves air through the passage and a HEPA filter located in the filtering chamber. A HEPA filter is supported in an inclined position in the air passage so that an air inlet plenum chamber is in communication with the entire inlet side of the filtering media and an air outlet plenum chamber is in communication with the entire outlet side of the filtering media. A holder pivotally mounted on the housing engages the top of the filter to hold the filter in assembled inclined relation in the housing.
Inventors
- 👤 Ross K Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:53
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10; B01D2277/00; B01D2277/20
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
244 words
An apparatus for separating foreign materials from a pneumatic fluid comprising: a generally rectangular shaped housing having side walls, a top wall and a bottom wall and having passage means with a generally horizontal axis for carrying pneumatic fluid, an inlet at one end of the housinG and an outlet on the other end of the housing in communication with the passage means, a transverse member mounted in the housing dividing the passage means into an inlet chamber and a filtering chamber and having an opening leading from the inlet chamber to the filtering chamber, means located in the inlet chamber operable to move fluid from the inlet through the passage means through said opening, filtering means located in and positioned diagonally across the filtering chamber for separating foreign materials from the fluid moving through the filtering chamber, said filtering means having a box-shaped frame and filtering media located within and across said frame, means connected to the transverse member to support one end wall of said frame in an elevated position relative to the horizontal axis of the passage means with an upper end of said end wall in engagement with the top wall of the housing, and the bottom wall of said housing supporting the other end wall of said frame diagonally dividing said filtering chamber into an inlet plenum and an outlet plenum, and holding means on said housing and on said filtering means holding the filtering means in the housing.
Claim 2
Independent Claim
244 words
An apparatus for separating foreign materials from a pneumatic fluid comprising: a generally rectangular shaped housing having side walls, a top wall and a bottom wall and having passage means with a generally horizontal axis for carrying pneumatic fluid, an inlet at one end of the housinG and an outlet on the other end of the housing in communication with the passage means, a transverse member mounted in the housing dividing the passage means into an inlet chamber and a filtering chamber and having an opening leading from the inlet chamber to the filtering chamber, means located in the inlet chamber operable to move fluid from the inlet through the passage means through said opening, filtering means located in and positioned diagonally across the filtering chamber for separating foreign materials from the fluid moving through the filtering chamber, said filtering means having a box-shaped frame and filtering media located within and across said frame, means connected to the transverse member to support one end wall of said frame in an elevated position relative to the horizontal axis of the passage means with an upper end of said end wall in engagement with the top wall of the housing, and the bottom wall of said housing supporting the other end wall of said frame diagonally dividing said filtering chamber into an inlet plenum and an outlet plenum, and holding means on said housing and on said filtering means holding the filtering means in the housing.
Claim 3
Dependent Claim
36 words
The apparatus of claim 1 wherein: the means to support said one end wall of said frame comprises a bracket attached to the transverse member, said bracket having a transverse lip engageable with the filtering means.
Claim 4
Dependent Claim
13 words
The apparatus of claim 1 wherein: the filtering means is a HEPA filter.
Claim 5
Dependent Claim
24 words
The apparatus of claim 1 wherein: the filtering chamber has an inlet plenum space open to the entire inlet side of the filtering means.
Claim 6
Dependent Claim
24 words
The apparatus of claim 1 wherein: the filtering chamber has an outlet plenum space open to the entire outlet side of the filtering means.
Claim 7
Dependent Claim
50 words
The apparatus of claim 1 wherein: the filtering chamber has an inlet plenum space open to the entire inlet side of the filtering means, and an outlet plenum space open to the entire outlet side of the filtering means, said inlet and outlet plenum spaces being generally the same size.
Claim 8
Dependent Claim
110 words
The apparatus of claim 1 wherein: said transverse member is mounted on said side, top and bottom walls of the housing, said member having an opening in the lower portion thereof allowing fluid to move through the transverse member, said means to support a part of the filtering means comprising a bracket attached to the transverse member above the opening, one end of said frame being positioned on the bracket with the other end of said frame being located on the bottom wall whereby said filtering means is inclined in said passage means, said holding means engageable with the frame to hold the frame on the bracket and bottom wall.
Claim 9
Dependent Claim
76 words
The apparatus of claim 7 wherein: said box-shaped frame has end walls and side walls, said side wall of the frame being located adjacent the side walls of the housing, one end wall of the frame being positioned on the bracket and engageable with the top wall of the housing, the other end wall of the frame being in engagement with the bottom wall, said holding means being engageable with the side walls of the frame.
Claim 10
Dependent Claim
23 words
The apparatus of claim 7 wherein: the bracket includes a transverse lip, said one end of the frame being located on the lip.
Claim 11
Dependent Claim
24 words
The apparatus of claim 7 wherein: the filtering chamber has an inlet plenum space open to the entire inlet side of the filtering means.
Claim 12
Dependent Claim
24 words
The apparatus of claim 7 wherein: the filtering chamber has an outlet plenum space open to the entire outlet side of the filtering means.
Claim 13
Dependent Claim
50 words
The apparatus of claim 7 wherein: the filtering chamber has an inlet plenum space open to the entire inlet side of the filtering means, and an outlet plenum space open to the entire outlet side of the filtering means, said inlet and outlet plenum spaces being generally the same size.
Claim 14
Dependent Claim
27 words
The apparatus of claim 7 wherein: the holding means includes a transverse rod engageable with the frame, and means to pivotally mount the rod on the housing.
Claim 15
Dependent Claim
17 words
The apparatus of claim 13 wherein: the means to pivotally mount the rod includes a U-shaped member.
Claim 16
Dependent Claim
28 words
The apparatus of claim 1 wherein: the holding means includes a transverse rod engageable with the filtering means, and means to pivotally mount the rod on the housing.
Claim 17
Dependent Claim
17 words
The apparatus of claim 15 wherein: the means to pivotally mount the rod includes a U-shaped member.
Claim 18
Dependent Claim
172 words
AN APPRATUS FOR SEPARATING FOREIGN MATERIALS FROM A PNEUMATIC FLUID COMPRISING: SIDE WALLS AND TOP AND BOTTOM WALLS FORMING A HOUSING HAVING A GENERALLY RECTANGULAR FILTERING CHAMBER WITH PASSAGE MEANS HAVING A GENERALLY LONGITUDINAL AXIS FOR CARRYING PNEUMATIC FLUID, A TRANSVERSE MEMBER CLOSING ONE END OF THE FILTERING CHAMBER AND HAVING AN INLET OPENING TO SAID FILTERING CHAMBER, MEANS MOUNTED ON THE HOUSING LOCATED ADJACENT SAID INLET OPENING FOR MOVING FLUID THROUGH THE PASSAGE MEANS, AN OUTLET FROM SAID CHAMBER AT THE OTHER END OF THE FILTERING CHAMBER FROM THE INLET OPENING, FILTERING MEANS LOCATED IN THE FILTERING CHAMBER FOR SEPARATING FOREIGN MATERIALS FROM THE FLUID MOVING THROUGH THE PASSAGE, SAID FILTERING MEANS HAVING A BOX-SHAPED FRAME AND FILTERING MEDIA LOCATED WITHIN AND ACROSS SAID FRAME, MEANS IN THE FILTERING CHAMBER CONNECTED TO THE TRANSVERSE MEMBER FOR SUPPORTING ONE END WALL OF SAID FRAME IN AN ELEVATED POSITION RELATIVE TO THE LONGITUDINAL AXIS OF THE PASSAGE MEANS WITH IN UPPER END OF SAID END WALL IN ENGAGEMENT WITH THE TOP WALL OF
Claim 19
Dependent Claim
172 words
AN APPRATUS FOR SEPARATING FOREIGN MATERIALS FROM A PNEUMATIC FLUID COMPRISING: SIDE WALLS AND TOP AND BOTTOM WALLS FORMING A HOUSING HAVING A GENERALLY RECTANGULAR FILTERING CHAMBER WITH PASSAGE MEANS HAVING A GENERALLY LONGITUDINAL AXIS FOR CARRYING PNEUMATIC FLUID, A TRANSVERSE MEMBER CLOSING ONE END OF THE FILTERING CHAMBER AND HAVING AN INLET OPENING TO SAID FILTERING CHAMBER, MEANS MOUNTED ON THE HOUSING LOCATED ADJACENT SAID INLET OPENING FOR MOVING FLUID THROUGH THE PASSAGE MEANS, AN OUTLET FROM SAID CHAMBER AT THE OTHER END OF THE FILTERING CHAMBER FROM THE INLET OPENING, FILTERING MEANS LOCATED IN THE FILTERING CHAMBER FOR SEPARATING FOREIGN MATERIALS FROM THE FLUID MOVING THROUGH THE PASSAGE, SAID FILTERING MEANS HAVING A BOX-SHAPED FRAME AND FILTERING MEDIA LOCATED WITHIN AND ACROSS SAID FRAME, MEANS IN THE FILTERING CHAMBER CONNECTED TO THE TRANSVERSE MEMBER FOR SUPPORTING ONE END WALL OF SAID FRAME IN AN ELEVATED POSITION RELATIVE TO THE LONGITUDINAL AXIS OF THE PASSAGE MEANS WITH IN UPPER END OF SAID END WALL IN ENGAGEMENT WITH THE TOP WALL OF
Claim 20
Dependent Claim
36 words
The apparatus of claim 17 wherein: the means to support said one end wall of said frame in an elevated position includes a transverse member, said transverse member having a lip engageable with the filtering means.
Claim 21
Dependent Claim
20 words
The apparatus of claim 17 wherein: said inlet plenum space and said outlet plenum space are generally the same size.
Claim 22
Independent Claim
275 words
An apparatus for separating foreign materials from a pneumatic fluid comprising: a housing having side walls, a top wall and a bottom wall and having passage means for carrying pneumatic fluid, an inlet and an outlet on the housing in communication with the passage means, a transverse member mounted on said side, top and bottom walls of the housing dividing the passage means into an inlet chamber and a filtering chamber, said transverse member having an opening in the lower portion thereof leading from the inlet chamber to the filtering chamber allowing fluid to move through the transverse member, means located in the inlet chamber operable to move fluid through the passage means through said opening, filtering means located in and positioned diagonally across the filtering chamber for separating foreign materials from the fluid moving through the filtering chamber, said filtering means having a box-shaped frame and filtering media located within and across said frame, a bracket attached to the transverse member above said opening to support one end wall of said frame in an elevated position, one end wall of said frame being positioned on the bracket with the other end wall of said frame being located on the bottom wall diagonally dividing said filtering chamber into an inlet plenum and an outlet plenum, and holding means on said housing and on said filtering means engageable with the frame to hold the frame on the bracket and bottom wall, said holding means including a transverse rod engageable with the frame, and means to pivotally mount the rod on the housing, said means to pivotally mount the rod on the housing including a U-shaped member.
Claim 23
Independent Claim
275 words
An apparatus for separating foreign materials from a pneumatic fluid comprising: a housing having side walls, a top wall and a bottom wall and having passage means for carrying pneumatic fluid, an inlet and an outlet on the housing in communication with the passage means, a transverse member mounted on said side, top and bottom walls of the housing dividing the passage means into an inlet chamber and a filtering chamber, said transverse member having an opening in the lower portion thereof leading from the inlet chamber to the filtering chamber allowing fluid to move through the transverse member, means located in the inlet chamber operable to move fluid through the passage means through said opening, filtering means located in and positioned diagonally across the filtering chamber for separating foreign materials from the fluid moving through the filtering chamber, said filtering means having a box-shaped frame and filtering media located within and across said frame, a bracket attached to the transverse member above said opening to support one end wall of said frame in an elevated position, one end wall of said frame being positioned on the bracket with the other end wall of said frame being located on the bottom wall diagonally dividing said filtering chamber into an inlet plenum and an outlet plenum, and holding means on said housing and on said filtering means engageable with the frame to hold the frame on the bracket and bottom wall, said holding means including a transverse rod engageable with the frame, and means to pivotally mount the rod on the housing, said means to pivotally mount the rod on the housing including a U-shaped member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |