US3773428A - Adjustable manhole cover support - Google Patents
Adjustable manhole cover support Download PDFInfo
- Publication number
- US3773428A US3773428A US00123650A US3773428DA US3773428A US 3773428 A US3773428 A US 3773428A US 00123650 A US00123650 A US 00123650A US 3773428D A US3773428D A US 3773428DA US 3773428 A US3773428 A US 3773428A
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- Prior art keywords
- ring
- frame
- manhole cover
- manhole
- disposed
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1409—Covers for manholes or the like; Frames for covers adjustable in height or inclination
Definitions
- SHEET 10? 6 HAROLD M. BOWMAN PAIENTED nuv 20 I973 SHEET 4 BF 6 a: G 1 3 .32 a 58 WI 'f"h a 5 64 42' I I l 40 4 6o 5 60 w 5 f 38 g 1 um 3 I I I) I I l 64 AK 64 so i%f, 54 5/56 FIG? INVENTOR.
- This invention relates to manhole cover supports and more particularly to an adjustable support for varying the height of the cover.
- the repaired or resurfaced roadway is substantially higher than the original roadway with the result that the upper edges of numerous manhole housings are disposed substantially below the new road surface.
- the upper end portions of the housings carry annular, inwardly projecting flanges just below the upper edges thereof for supporting manhole covers and such covers are disposed below the resurfaced roadway,- thereby creating hazardous driving conditions unless some means is provided for raising the levels of the covers.
- An object of the invention is to provide a vertically adjustable manhole cover support whereby a manhole cover can be raised to the level of a newly resurfaced road.
- Another object is to provide a manhole cover support of the above type having means for mounting it on a conventional manhole housing.
- a further object of the invention is to provide a manhole cover support of the above type that is simple in construction, inexpensive to manufacture, and highly effective in operation.
- a manhole cover support for vertically adjusting the level of an associated manhole cover in the opening of a manhole housing including a manhole frame adapted to be fixed in the opening, and a unitary peripheral manhole adjusting ring disposed on the frame and having a peripheral seat formed in its interior peripheral surface for receiving the manhole cover.
- Adjustment means are disposed between the frame and the ring for vertically adjusting the height of the ring with respect to the frame.
- the ring may be formed of peripheral segments connected together.
- An adjustable locking bracket detachably connects the frame and ring.
- the adjustment means is a plurality of set screws threadedly disposed in the bottom surface of the ring, such screws being vertically adjustable to selectively adjust the distance between the frame and ring and thus selectively adjust the height of the manhole cover with respect to the frame.
- the adjustment means includes a U" bracket and at least one spacer disposed within and at the bottom of the bracket, such bracket being detachably positioned on the ring be tween the frame and the ring to selectively adjust the vertical distance therebetween and thus adjust the height of the manhole cover with respect to the frame.
- the ring contains a plurality of stepped notches formed in the lower edge of the ring
- the adjustment means includes a plurality of stepped inserts formed for selective insertion respectively in the notches for adjusting the vertical distance between the frame and the ring to thus selectively adjust the height of the manhole cover with respect to the frame.
- FIG. 1 is a perspective view of an adjustable manhole cover support constructed in accordance with the invention
- FIG. 2 is an enlarged view taken along the line 22 of FIG. 1, with the frame and portions of the manhole cover and the roadway surface being added;
- FIG. 3 illustrates a modification of the support shown in FIG. 1;
- FIG. 4 is an enlarged view taken along the line 44 of FIG. 3, with the frame and portions of the manhole cover and the roadway surface being added;
- FIG. 5 illustrates a further modification of the support shown in FIG. 1;
- FIG. 6 is an enlarged view taken along the line 6-6 of FIG. 5, with the frame and portions of the manhole cover and the roadway surface being added;
- FIG. 7 illustrates a further modification of the support shown in FIG. 1;
- FIG. 8 is an enlarged view taken along the line 8-8 of FIG. 7, with the frame and portions of the manhole cover and the roadway surface being added;
- FIG. 9 illustrates a further modification of the support shown in FIG. 1;
- FIG. 10 is an enlarged view taken along the line l0l0 of FIG. 9, with the frame and portions of the manhole cover and the roadway surface being added;
- FIG. 11 illustrates a further modification of the support shown in FIG. 1;
- FIG. 12 is an enlarged view taken along the line 12--l2 of FIG. 11, with the frame and portions of the manhole cover and the roadway surface being added.
- a manhole cover support including a manhole frame 20 and a unitary peripheral manhole adjusting ring 22 disposed on the frame and having a peripheral seat 24 formed in its interior peripheral surface for receiving a manhole cover 26 thereon.
- Suitable adjustment means are provided between the frame 20 and the ring 22 for vertically adjusting the height of the ring with respect to the frame, such adjusting means, in this instance, being a plurality of set screws 28.
- FIGS. 3 and 4 are similar to the structures in FIGS. 1 and 2, respectively, except that the ring is formed of a plurality of peripheral segments 32, 34, 36 and 38 joined by suitable attaching means such as the bolts 40, 42, 44, 46 to form a unitary ring.
- FIGS. 1-4 show the adjusting means in the form of the set screws 28 which vary or adjust the vertical distance between the frame and ring and thus vary the height of the manhole cover with respect to the frame and with respect to the roadway surface 50.
- An adjustable locking bracket 54 with its attaching screws 56 and 58 is provided t secure the frame 20 to the ring.
- the ring 22 is a one-piece ring. In FIGS. 3, 7 and 11 the ring is segmented.
- the adjustment means includes a U" bracket 60 slidably disposed in a slot 62 in the ring 22 and one or more spacers 64 disposed within and at the bottom of the bracket 60.
- the bracket 60 is detachably positioned on the ring 22 between the frame 20 and the ring 22 to selectively adjust the vertical distance therebetween and thus adjust the height of the manhole cover 26 with respect to the frame and with respect to the roadway surface 50.
- the ring 22 contains a plurality of stepped notches 70 formed in the lower edge of the ring 22, and the adjustment means includes a plurality of stepped inserts 72 formed for selective insertion respectively in the notches 70 for adjusting the vertical distance between the frame and the ring and thus selectively adjust the height of the manhole cover with respect to the frame and with respect to the roadway surface 50.
- FIGS. 1 1 and 12 the aforedescribed stepped insert adjusting means construction is shown applied to the segmented ring structure.
- set screw locking means may be used to releasably retain the set screws in final adjuste d position.
- a synthetic organic plastic covering 29 may be placed on the set screws to partially interfere with the threading of such screws and thus retain them in locked position.
- Lock washers may also be used.
- a manhole cover support for vertically adjusting the level of an associated manhole cover in the opening of a manhole housing comprising, a manhole frame adapted to be fixed in the opening, a unitary peripheral adjustable ring disposed on the frame and having a peripheral seat formed in its interior peripheral surface for receiving the manhole cover, said ring being formed of peripheral segments, and means for connecting such segments together to form the unitary ring, said adjustment means being disposed in the bottom surface of the ring, said ring supporting said cover, and adjustment means disposed at least partially within the external surface of the ring and offset inwardly within the radial boundaries of the ring for vertically adjusting the height of the ring with respect to the frame.
- said adjustment means is a plurality of set screws threadedly disposed in the bottom surface of the ring, said screws being vertically adjustable to selectively adjust the distance between the frame and ring and thus selectively adjust the height of the manhole cover with respect to the frame.
- a manhole cover support for vertically adjusting the level of an associated manhole cover in the opening of a manhole housing comprising, a manhole frame adapted to be fixed in the opening, a unitary peripheral manhole adjusting ring disposed on the frame and having a peripheral seat formed in its interior peripheral surface for receiving the manhole cover, and adjustment means disposed between the frame and the ring for vertically adjusting the height of the ring with respect to the frame, said ring containing a plurality of stepped notches formed in the lower edge of the ring, and said adjustment means including a plurality of stepped inserts formed for selective insertion respectively in said notches for adjusting the vertical distance between the frame and the ring and thus selectively adjust the height of the manhole cover with respect to the frame.
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
An adjustable manhole cover support including a peripheral frame adapted for placement in the opening of a manhole housing, and a peripheral manhole adjusting ring disposed on the frame. The ring has a peripheral inner seat for receiving the manhole cover. Adjustment means is provided between the frame and the ring to adjust the height therebetween and thus adjust the height of the manhole cover as may be needed when the roadway is resurfaced. The adjusting means may be set screws, stepped inserts or spacers contained in a U-bracket.
Description
United States Patent [1 1 Bowman Nov. 20, 1973 [22] Filed:
[54] ADJUSTABLE MANHOLE COVER SUPPORT [75] Inventor: Harold M. Bowman, Bay Village,
Ohio
[73] Assignee: National Utility Products Company Mar. 12, 1971 21 Appl. No.2 123,650
[52] US. Cl. 404/26 [51] Int. Cl E02d 29/14 [58] Field of Search 94/34, 35
[56] References Cited UNITED STATES PATENTS 2,930,295 3/1960 Hale 94/34 3,611,889 10/1971 Levinson..
3,218,943 1 1/1965 Bowman 2,254,668 9/ 1941 Tomek.....
4 54 A'Ell Wiesmann 94/34 X Mason 94/34 X Primary ExaminerNile C. Byers, Jr. AttorneyBaldwin, Egan, Walling & Fetzer 5 7 ABSTRACT 9 Claims, 12 Drawing Figures PAIENTEnnuvzo 191s 3773.428
BHAROLD M. BOWMAN PAIENTEDHUVZO I973 3,773,428
SHEET 5 OF 6 FIG.IO
BXI -iAROLD M. BOWMAN 6244M,
ATTORNEYS PMENTEU REV 20 I973 SHEET SUF 6 I w 4/ 58 ii [I f 72 g 54 I f I" 26 24 I FIGII INVENTOR.
HAROLD M. BOWMAN BY ATTORNEYS ADJUSTABLE MANHOLE COVER SUPPORT This invention relates to manhole cover supports and more particularly to an adjustable support for varying the height of the cover.
In the repair and resurfacing of streets and highways, it is frequently found that the repaired or resurfaced roadway is substantially higher than the original roadway with the result that the upper edges of numerous manhole housings are disposed substantially below the new road surface. The upper end portions of the housings carry annular, inwardly projecting flanges just below the upper edges thereof for supporting manhole covers and such covers are disposed below the resurfaced roadway,- thereby creating hazardous driving conditions unless some means is provided for raising the levels of the covers.
An object of the invention is to provide a vertically adjustable manhole cover support whereby a manhole cover can be raised to the level of a newly resurfaced road.
Another object is to provide a manhole cover support of the above type having means for mounting it on a conventional manhole housing.
A further object of the invention is to provide a manhole cover support of the above type that is simple in construction, inexpensive to manufacture, and highly effective in operation.
According to one modification of the invention, it is an object to provide a sectional manhole cover support for original installation which circumferentially engages a modified manhole housing in such manner as to be subsequently vertically adjustable when the street or highway is resurfaced.
Briefly, the foregoing objects are accomplished by the provision of a manhole cover support for vertically adjusting the level of an associated manhole cover in the opening of a manhole housing including a manhole frame adapted to be fixed in the opening, and a unitary peripheral manhole adjusting ring disposed on the frame and having a peripheral seat formed in its interior peripheral surface for receiving the manhole cover.
- Adjustment means are disposed between the frame and the ring for vertically adjusting the height of the ring with respect to the frame. The ring may be formed of peripheral segments connected together. An adjustable locking bracket detachably connects the frame and ring.
In one form of the invention the adjustment means is a plurality of set screws threadedly disposed in the bottom surface of the ring, such screws being vertically adjustable to selectively adjust the distance between the frame and ring and thus selectively adjust the height of the manhole cover with respect to the frame.
In another form of the invention the adjustment means includes a U" bracket and at least one spacer disposed within and at the bottom of the bracket, such bracket being detachably positioned on the ring be tween the frame and the ring to selectively adjust the vertical distance therebetween and thus adjust the height of the manhole cover with respect to the frame.
In a further modification, the ring contains a plurality of stepped notches formed in the lower edge of the ring, and the adjustment means includes a plurality of stepped inserts formed for selective insertion respectively in the notches for adjusting the vertical distance between the frame and the ring to thus selectively adjust the height of the manhole cover with respect to the frame.
Other objects and advantages of the invention will be apparent from the following description taken in conjunction with the drawings wherein:
FIG. 1 is a perspective view of an adjustable manhole cover support constructed in accordance with the invention;
FIG. 2 is an enlarged view taken along the line 22 of FIG. 1, with the frame and portions of the manhole cover and the roadway surface being added;
FIG. 3 illustrates a modification of the support shown in FIG. 1;
FIG. 4 is an enlarged view taken along the line 44 of FIG. 3, with the frame and portions of the manhole cover and the roadway surface being added;
FIG. 5 illustrates a further modification of the support shown in FIG. 1;
FIG. 6 is an enlarged view taken along the line 6-6 of FIG. 5, with the frame and portions of the manhole cover and the roadway surface being added;
FIG. 7 illustrates a further modification of the support shown in FIG. 1;
FIG. 8 is an enlarged view taken along the line 8-8 of FIG. 7, with the frame and portions of the manhole cover and the roadway surface being added;
FIG. 9 illustrates a further modification of the support shown in FIG. 1;
FIG. 10 is an enlarged view taken along the line l0l0 of FIG. 9, with the frame and portions of the manhole cover and the roadway surface being added;
FIG. 11 illustrates a further modification of the support shown in FIG. 1; and
FIG. 12 is an enlarged view taken along the line 12--l2 of FIG. 11, with the frame and portions of the manhole cover and the roadway surface being added.
In the drawings, like numbers refer to like parts.
Referring first to FIGS. 1 and 2, there is shown a manhole cover support including a manhole frame 20 and a unitary peripheral manhole adjusting ring 22 disposed on the frame and having a peripheral seat 24 formed in its interior peripheral surface for receiving a manhole cover 26 thereon. Suitable adjustment means" are provided between the frame 20 and the ring 22 for vertically adjusting the height of the ring with respect to the frame, such adjusting means, in this instance, being a plurality of set screws 28.
FIGS. 3 and 4 are similar to the structures in FIGS. 1 and 2, respectively, except that the ring is formed of a plurality of peripheral segments 32, 34, 36 and 38 joined by suitable attaching means such as the bolts 40, 42, 44, 46 to form a unitary ring.
Accordingly, FIGS. 1-4 show the adjusting means in the form of the set screws 28 which vary or adjust the vertical distance between the frame and ring and thus vary the height of the manhole cover with respect to the frame and with respect to the roadway surface 50.
An adjustable locking bracket 54 with its attaching screws 56 and 58 is provided t secure the frame 20 to the ring.
In FIGS. 1, 5 and 9 the ring 22 is a one-piece ring. In FIGS. 3, 7 and 11 the ring is segmented.
In FIGS. 5 and 6 the adjustment means includes a U" bracket 60 slidably disposed in a slot 62 in the ring 22 and one or more spacers 64 disposed within and at the bottom of the bracket 60. The bracket 60 is detachably positioned on the ring 22 between the frame 20 and the ring 22 to selectively adjust the vertical distance therebetween and thus adjust the height of the manhole cover 26 with respect to the frame and with respect to the roadway surface 50.
Such aforedescribed U bracket adjusting means construction is also shown applied to the segmented ring structure of FIGS. 7 and 8.
In FIGS. 9 and 10 the ring 22 contains a plurality of stepped notches 70 formed in the lower edge of the ring 22, and the adjustment means includes a plurality of stepped inserts 72 formed for selective insertion respectively in the notches 70 for adjusting the vertical distance between the frame and the ring and thus selectively adjust the height of the manhole cover with respect to the frame and with respect to the roadway surface 50.
In FIGS. 1 1 and 12, the aforedescribed stepped insert adjusting means construction is shown applied to the segmented ring structure.
Thus there is provided a manhole height adjusting means of simple, economical construction that may be very easily operated by the man in the field.
The terms and expressions which have been employed are used as terms of description, and not of limitation, and there is no intention, in the use of such terms and expressions, of excluding any equivalents of the features shown and described or portions thereof, but it is recognized that various modifications are possible within the scope of the invention claimed.
In the set screw adjusting means structure shown in FIGS. 1-4, many types of set screw locking means may be used to releasably retain the set screws in final adjuste d position. For example, a synthetic organic plastic covering 29 may be placed on the set screws to partially interfere with the threading of such screws and thus retain them in locked position. Lock washers may also be used.
What is claimed is:
l. A manhole cover support for vertically adjusting the level of an associated manhole cover in the opening of a manhole housing comprising, a manhole frame adapted to be fixed in the opening, a unitary peripheral adjustable ring disposed on the frame and having a peripheral seat formed in its interior peripheral surface for receiving the manhole cover, said ring being formed of peripheral segments, and means for connecting such segments together to form the unitary ring, said adjustment means being disposed in the bottom surface of the ring, said ring supporting said cover, and adjustment means disposed at least partially within the external surface of the ring and offset inwardly within the radial boundaries of the ring for vertically adjusting the height of the ring with respect to the frame.
2. The structure of claim 1 wherein an adjustable locking bracket detachably connects the frame and ring together.
3. The structure of claim 1 wherein said adjustment means is a plurality of set screws threadedly disposed in the bottom surface of the ring, said screws being vertically adjustable to selectively adjust the distance between the frame and ring and thus selectively adjust the height of the manhole cover with respect to the frame.
4. The structure of claim 3 wherein the set screws have releasable locking means for retaining the screws in final adjusted position.
and thus adjust the height of the manhole cover with respect to the frame.
7. A manhole cover support for vertically adjusting the level of an associated manhole cover in the opening of a manhole housing comprising, a manhole frame adapted to be fixed in the opening, a unitary peripheral manhole adjusting ring disposed on the frame and having a peripheral seat formed in its interior peripheral surface for receiving the manhole cover, and adjustment means disposed between the frame and the ring for vertically adjusting the height of the ring with respect to the frame, said ring containing a plurality of stepped notches formed in the lower edge of the ring, and said adjustment means including a plurality of stepped inserts formed for selective insertion respectively in said notches for adjusting the vertical distance between the frame and the ring and thus selectively adjust the height of the manhole cover with respect to the frame.
8. A manhole cover support for vertically adjusting the level of an associated manhole cover in the opening of a manhole housing comprising, a manhole frame adapted to be fixed in the opening, a unitary peripheral manhole adjusting ring disposed on the frame and having a peripheral seat formed in its interior peripheral surface for receiving the manhole cover, and adjustment means disposed between the frame and the ring for vertically adjusting the height of the ring with respect to the frame, said ring being formed of peripheral segments, means for connecting such segments together to form the unitary ring, said ring containing a plurality of stepped notches formed in the lower edge of the ring, and said adjustment means including a plurality of stepped inserts formed for selective insertion respectively in said notches for adjusting the vertical distance between the frame and the ring and thus selectively adjust the height of the manhole cover with respect to the frame.
9. A manhole cover support for vertically adjusting the level of an associated manhole cover in the opening of a manhole housing comprising, a manhole frame adapted to be fixed in the opening, a unitary peripheral adjustable ring disposed on the frame and having a peripheral seat formed in its interior peripheral surface for receiving the manhole cover, said ring supporting said cover, and adjustment means disposed at least partially within the external surface of the ring and offset inwardly within the radial boundaries of the ring for vertically adjusting the height of the ring with respect to the frame, said adjustment means comprising a U bracket and at least one spacer disposed within and at the bottom of the bracket, said bracket being detachably positioned on the ring between the frame and the ring to selectively adjust the vertical distance therebetween and thus adjust the height of the manhole cover with respect to the frame.
Claims (9)
1. A manhole cover support for vertically adjusting the level of an associated manhole cover in the opening of a manhole housing comprising, a manhole frame adapted to be fixed in the opening, a unitary peripheral adjustable ring disposed on the frame and having a peripheral seat formed in its interior peripheral surface for receiving the manhole cover, said ring being formed of peripheral segments, and means for connecting such segments together to form the unitary ring, said adjustment means being disposed in the bottom surface of the ring, said ring supporting said cover, and adjustment means disposed at least partially within the external surface of the ring and offset inwardly within the radial boundaries of the ring for vertically adjusting the height of the ring with respect to the frame.
2. The structure of claim 1 wherein an adjustable locking bracket detachably connects the frame and ring together.
3. The structure of claim 1 wherein said adjustment means is a plurality of set screws threadedly disposed in the bottom surface of the ring, said screws being vertically adjustable to selectively adjust the distance between the frame and ring and thus selectively adjust the height of the manhole cover with respect to the frame.
4. The structure of claim 3 wherein the set screws have releasable locking means for retaining the screws in final adjusted position.
5. The structure of claim 4 wherein said locking means is a covering of synthetic organic plastic.
6. The structure of claim 1 wherein said adjustment means comprises a ''''U'''' bracket and at least one spacer disposed within and at the bottom of the bracket, said bracket in coaction with the spacer being detachably positioned on the ring between the frame and the ring to selectively adjust the vertical distance therebetween and thus adjust the height of the manhole cover with respect to the frame.
7. A manhole cover support for vertically adjusting the level of an associated manhole cover in the opening of a manhole housing comprising, a manhole frame adapted to be fixed in the opening, a unitary peripheral manhole adjusting ring disposed on the frame and having a peripheral seat formed in its interior peripheral surface for receiving the manhole cover, and adjustment means disposed between the frame and the ring for vertically adjusting the height of the ring with respect to the frame, said ring containing a plurality of stEpped notches formed in the lower edge of the ring, and said adjustment means including a plurality of stepped inserts formed for selective insertion respectively in said notches for adjusting the vertical distance between the frame and the ring and thus selectively adjust the height of the manhole cover with respect to the frame.
8. A manhole cover support for vertically adjusting the level of an associated manhole cover in the opening of a manhole housing comprising, a manhole frame adapted to be fixed in the opening, a unitary peripheral manhole adjusting ring disposed on the frame and having a peripheral seat formed in its interior peripheral surface for receiving the manhole cover, and adjustment means disposed between the frame and the ring for vertically adjusting the height of the ring with respect to the frame, said ring being formed of peripheral segments, means for connecting such segments together to form the unitary ring, said ring containing a plurality of stepped notches formed in the lower edge of the ring, and said adjustment means including a plurality of stepped inserts formed for selective insertion respectively in said notches for adjusting the vertical distance between the frame and the ring and thus selectively adjust the height of the manhole cover with respect to the frame.
9. A manhole cover support for vertically adjusting the level of an associated manhole cover in the opening of a manhole housing comprising, a manhole frame adapted to be fixed in the opening, a unitary peripheral adjustable ring disposed on the frame and having a peripheral seat formed in its interior peripheral surface for receiving the manhole cover, said ring supporting said cover, and adjustment means disposed at least partially within the external surface of the ring and offset inwardly within the radial boundaries of the ring for vertically adjusting the height of the ring with respect to the frame, said adjustment means comprising a ''''U'''' bracket and at least one spacer disposed within and at the bottom of the bracket, said bracket being detachably positioned on the ring between the frame and the ring to selectively adjust the vertical distance therebetween and thus adjust the height of the manhole cover with respect to the frame.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12365071A | 1971-03-12 | 1971-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3773428A true US3773428A (en) | 1973-11-20 |
Family
ID=22409987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00123650A Expired - Lifetime US3773428A (en) | 1971-03-12 | 1971-03-12 | Adjustable manhole cover support |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3773428A (en) |
Cited By (61)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3891337A (en) * | 1972-10-16 | 1975-06-24 | Archibald Henry Richard Mccoy | Method and means for adjusting the elevation of manhole covers |
| US3926533A (en) * | 1974-07-15 | 1975-12-16 | Andre Binette | Manhole |
| US3930739A (en) * | 1972-08-22 | 1976-01-06 | Larsson Folke J | Manhole frame with adjustment screws |
| US3945746A (en) * | 1975-01-27 | 1976-03-23 | Maryland Grading And Fabricating Company, Inc. | Grating structure for roadway storm drain inlets and the like |
| US4097171A (en) * | 1977-09-16 | 1978-06-27 | Fier Raymond L | Manhole cover support ring |
| US4149816A (en) * | 1978-02-06 | 1979-04-17 | Piso Johannes L | Metal shaft cover frame |
| FR2414096A1 (en) * | 1978-01-10 | 1979-08-03 | Piso Johannes | Roadway metal shaft cover frame - has collets receiving tightening screws which connect the cover frame in vertically adjustable manner to shaft concrete frame |
| US4225266A (en) * | 1978-11-01 | 1980-09-30 | Fier Raymond L | Method and apparatus for adjusting the elevation of manhole covers |
| US4236358A (en) * | 1978-08-16 | 1980-12-02 | National Utility Products Company | Adjustable manhole cover support structure |
| US4273467A (en) * | 1978-10-13 | 1981-06-16 | Cremo Supply Ltd. | Adjustable manhole cover support |
| US4281944A (en) * | 1979-09-10 | 1981-08-04 | Bowman Harold M | Manhole cover support |
| US4302126A (en) * | 1979-12-27 | 1981-11-24 | Fier Raymond L | Manhole cover support ring |
| US4582450A (en) * | 1984-10-10 | 1986-04-15 | Ronald Neil | Universal manhole adjusting ring |
| EP0300829A1 (en) * | 1987-07-23 | 1989-01-25 | Harold Moses Bowman | Manhole cover support having enhanced grip |
| US4844402A (en) * | 1988-07-01 | 1989-07-04 | Ronald Werner | Form for a mortar cap |
| US4867601A (en) * | 1987-07-23 | 1989-09-19 | Bowman Harold M | Sturdy adjustable manhole cover support |
| US4867600A (en) * | 1987-07-23 | 1989-09-19 | Bowman Harold M | Polygonal manhole cover support |
| US4872780A (en) * | 1987-07-23 | 1989-10-10 | Bowman Harold M | Manhole cover support with box flanging |
| US4927290A (en) * | 1987-07-23 | 1990-05-22 | Bowman Harold M | Manhole cover support resistant to water infiltration |
| US4963053A (en) * | 1987-07-23 | 1990-10-16 | Bowman Harold M | Multicomponent wales and bases for manhole cover supports |
| US4966489A (en) * | 1987-07-23 | 1990-10-30 | Bowman Harold M | Manhole cover support having interbraced top members |
| US4969771A (en) * | 1987-07-23 | 1990-11-13 | Bowman Harold M | Manhole cover support having enhanced grip |
| US4969770A (en) * | 1987-07-23 | 1990-11-13 | Bowman Harold M | Manhole cover support with topside flange |
| US5021261A (en) * | 1987-07-23 | 1991-06-04 | Bowman Harold M | Process for making a manhole cover support having enhanced grip |
| US5205668A (en) * | 1991-03-29 | 1993-04-27 | At&T Bell Laboratories | Manhole adapter |
| US5211504A (en) * | 1991-01-31 | 1993-05-18 | Roger Trudel | Adjustable manhole top |
| US5221155A (en) * | 1991-09-24 | 1993-06-22 | Umar, Inc. | Vertically adjustable manhole adjusting ring section |
| BE1005451A3 (en) * | 1991-10-09 | 1993-07-27 | Marc Eenens | Device for the separation of a contaminant present in a fluid |
| USRE34550E (en) * | 1987-07-23 | 1994-02-22 | Bowman; Harold M. | Sturdy adjustable manhole cover support |
| US5308189A (en) * | 1992-06-12 | 1994-05-03 | Claing Jean Louis | Gripping device for retaining a ring member supporting a manhole cover |
| US5326188A (en) * | 1992-12-08 | 1994-07-05 | Bowman Harold M | Anchor for manhole cover support |
| US5344253A (en) * | 1993-09-01 | 1994-09-06 | Cesare Sacchetti | Adjustable manhole cover |
| US5564855A (en) * | 1994-05-31 | 1996-10-15 | National Polymers Inc | Height adjustment ring for manhole cover frame |
| US5611640A (en) * | 1994-05-27 | 1997-03-18 | Bowman; Harold M. | Method and apparatus for anchoring a utility grate cover |
| US5628152A (en) * | 1995-08-16 | 1997-05-13 | Bowman; Harold M. | Adjustable manhole cover support with shield |
| US5697729A (en) * | 1993-07-02 | 1997-12-16 | Bowman; Harold M. | Anchor for utility access hole support insert |
| US5944442A (en) * | 1996-05-13 | 1999-08-31 | Anjowa, Inc. | Manhole extender ring system and method of use |
| US5956905A (en) * | 1997-02-06 | 1999-09-28 | Wiedrich; Dwight G. | Manhole adjusting extension member |
| US6007270A (en) * | 1993-07-02 | 1999-12-28 | Bowman; Harold M. | Manhole frame assembly |
| US6371687B1 (en) * | 1999-02-09 | 2002-04-16 | Marc S. Heintz | Method and apparatus for leveling manhole cover frames |
| US6527476B1 (en) * | 1999-12-02 | 2003-03-04 | Tycom (Us) Inc. | Non-sinking manhole assembly for below ground liquid storage tanks |
| US20040071508A1 (en) * | 2002-10-07 | 2004-04-15 | Nadasde Wayne John | Method and apparatus for adjusting the height and inclination of roadway and greenway appurtenances |
| US20050011573A1 (en) * | 2003-07-14 | 2005-01-20 | American Boa, Inc. | Flexible liner air gap pipe |
| US20050058505A1 (en) * | 2002-10-07 | 2005-03-17 | Nadasde Wayne John | Method and apparatus for adjusting the height and inclination of roadway and greenway appurtenances |
| US6953302B1 (en) * | 2003-07-23 | 2005-10-11 | Kochling Edmund T | Adjustment riser for a manhole frame |
| US20070039248A1 (en) * | 2003-06-18 | 2007-02-22 | Rhodes Derrick A | Utility portal |
| US20070223997A1 (en) * | 2004-05-13 | 2007-09-27 | Aco Severin Ahlmann Gmbh & Co. Kg | Covered Plastic Lock |
| WO2008046668A1 (en) * | 2006-10-17 | 2008-04-24 | Bruno Zanatta | Kit for the adjustment of manholes for pits |
| US20130105503A1 (en) * | 2010-05-18 | 2013-05-02 | St Reproductive Technologies, Llc | Method and apparatus for suspending a container |
| US8870490B2 (en) | 2011-02-04 | 2014-10-28 | Opus International Consultants Limited | Adjustable supports for access hatch frames |
| US9121157B2 (en) | 2013-05-03 | 2015-09-01 | Willerding Acquisition Corp. | Manhole riser extension assembly |
| CN104912110A (en) * | 2015-06-16 | 2015-09-16 | 常熟市华诚建设工程有限责任公司 | Splicing and adjusting manhole cover |
| US9587368B2 (en) * | 2015-04-02 | 2017-03-07 | Robert T. Smith | Manhole repair bracket |
| ES2684106A1 (en) * | 2017-03-30 | 2018-10-01 | Metropolitano de Tenerife, S.A. | LEVELING DEVICE FOR REGISTRATION AND MOUTH CAPS ASSOCIATE LEVELING PROCEDURE (Machine-translation by Google Translate, not legally binding) |
| US20190106857A1 (en) * | 2017-10-10 | 2019-04-11 | Canada Pipe Company ULC | Frame positioning device for positioning a frame over an inlet of a catch basin or manhole and method for positioning the same |
| EP3483343A1 (en) * | 2017-11-10 | 2019-05-15 | Orange | Frame for underground chamber cover |
| WO2019238795A3 (en) * | 2018-06-12 | 2020-03-05 | Wrekin Holdings Limited | Ground surface access assemblies |
| WO2021015742A1 (en) * | 2019-07-23 | 2021-01-28 | Sullair, Llc | Integrated lifting and pivoting device |
| US20210291201A1 (en) * | 2018-09-14 | 2021-09-23 | Guntram Krettek | Method for fixing a metal sheet and filter device produced therewith |
| US11326321B2 (en) | 2020-02-28 | 2022-05-10 | Barrco, Inc. | Height-adjustable fixtures for buried tubulars and methods of adjusting the height-adjustable fixtures |
| US20230018046A1 (en) * | 2015-11-25 | 2023-01-19 | Flo-Water, Llc | Water inlet protection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3930739A (en) * | 1972-08-22 | 1976-01-06 | Larsson Folke J | Manhole frame with adjustment screws |
| US3891337A (en) * | 1972-10-16 | 1975-06-24 | Archibald Henry Richard Mccoy | Method and means for adjusting the elevation of manhole covers |
| US3926533A (en) * | 1974-07-15 | 1975-12-16 | Andre Binette | Manhole |
| US3945746A (en) * | 1975-01-27 | 1976-03-23 | Maryland Grading And Fabricating Company, Inc. | Grating structure for roadway storm drain inlets and the like |
| US4097171A (en) * | 1977-09-16 | 1978-06-27 | Fier Raymond L | Manhole cover support ring |
| FR2414096A1 (en) * | 1978-01-10 | 1979-08-03 | Piso Johannes | Roadway metal shaft cover frame - has collets receiving tightening screws which connect the cover frame in vertically adjustable manner to shaft concrete frame |
| US4149816A (en) * | 1978-02-06 | 1979-04-17 | Piso Johannes L | Metal shaft cover frame |
| US4236358A (en) * | 1978-08-16 | 1980-12-02 | National Utility Products Company | Adjustable manhole cover support structure |
| US4273467A (en) * | 1978-10-13 | 1981-06-16 | Cremo Supply Ltd. | Adjustable manhole cover support |
| US4225266A (en) * | 1978-11-01 | 1980-09-30 | Fier Raymond L | Method and apparatus for adjusting the elevation of manhole covers |
| US4281944A (en) * | 1979-09-10 | 1981-08-04 | Bowman Harold M | Manhole cover support |
| US4302126A (en) * | 1979-12-27 | 1981-11-24 | Fier Raymond L | Manhole cover support ring |
| US4582450A (en) * | 1984-10-10 | 1986-04-15 | Ronald Neil | Universal manhole adjusting ring |
| US4867600A (en) * | 1987-07-23 | 1989-09-19 | Bowman Harold M | Polygonal manhole cover support |
| USRE34550E (en) * | 1987-07-23 | 1994-02-22 | Bowman; Harold M. | Sturdy adjustable manhole cover support |
| US4867601A (en) * | 1987-07-23 | 1989-09-19 | Bowman Harold M | Sturdy adjustable manhole cover support |
| EP0300829A1 (en) * | 1987-07-23 | 1989-01-25 | Harold Moses Bowman | Manhole cover support having enhanced grip |
| US4872780A (en) * | 1987-07-23 | 1989-10-10 | Bowman Harold M | Manhole cover support with box flanging |
| US4927290A (en) * | 1987-07-23 | 1990-05-22 | Bowman Harold M | Manhole cover support resistant to water infiltration |
| US4963053A (en) * | 1987-07-23 | 1990-10-16 | Bowman Harold M | Multicomponent wales and bases for manhole cover supports |
| US4966489A (en) * | 1987-07-23 | 1990-10-30 | Bowman Harold M | Manhole cover support having interbraced top members |
| US4969771A (en) * | 1987-07-23 | 1990-11-13 | Bowman Harold M | Manhole cover support having enhanced grip |
| US4969770A (en) * | 1987-07-23 | 1990-11-13 | Bowman Harold M | Manhole cover support with topside flange |
| US5021261A (en) * | 1987-07-23 | 1991-06-04 | Bowman Harold M | Process for making a manhole cover support having enhanced grip |
| US4844402A (en) * | 1988-07-01 | 1989-07-04 | Ronald Werner | Form for a mortar cap |
| US5211504A (en) * | 1991-01-31 | 1993-05-18 | Roger Trudel | Adjustable manhole top |
| US5205668A (en) * | 1991-03-29 | 1993-04-27 | At&T Bell Laboratories | Manhole adapter |
| US5221155A (en) * | 1991-09-24 | 1993-06-22 | Umar, Inc. | Vertically adjustable manhole adjusting ring section |
| BE1005451A3 (en) * | 1991-10-09 | 1993-07-27 | Marc Eenens | Device for the separation of a contaminant present in a fluid |
| US5308189A (en) * | 1992-06-12 | 1994-05-03 | Claing Jean Louis | Gripping device for retaining a ring member supporting a manhole cover |
| US5326188A (en) * | 1992-12-08 | 1994-07-05 | Bowman Harold M | Anchor for manhole cover support |
| US6007270A (en) * | 1993-07-02 | 1999-12-28 | Bowman; Harold M. | Manhole frame assembly |
| US5697729A (en) * | 1993-07-02 | 1997-12-16 | Bowman; Harold M. | Anchor for utility access hole support insert |
| US5344253A (en) * | 1993-09-01 | 1994-09-06 | Cesare Sacchetti | Adjustable manhole cover |
| US5611640A (en) * | 1994-05-27 | 1997-03-18 | Bowman; Harold M. | Method and apparatus for anchoring a utility grate cover |
| US5564855A (en) * | 1994-05-31 | 1996-10-15 | National Polymers Inc | Height adjustment ring for manhole cover frame |
| US5628152A (en) * | 1995-08-16 | 1997-05-13 | Bowman; Harold M. | Adjustable manhole cover support with shield |
| US5944442A (en) * | 1996-05-13 | 1999-08-31 | Anjowa, Inc. | Manhole extender ring system and method of use |
| US5956905A (en) * | 1997-02-06 | 1999-09-28 | Wiedrich; Dwight G. | Manhole adjusting extension member |
| US6371687B1 (en) * | 1999-02-09 | 2002-04-16 | Marc S. Heintz | Method and apparatus for leveling manhole cover frames |
| US6527476B1 (en) * | 1999-12-02 | 2003-03-04 | Tycom (Us) Inc. | Non-sinking manhole assembly for below ground liquid storage tanks |
| US6997639B2 (en) * | 2002-10-07 | 2006-02-14 | Wayne John Nadasde | Method and apparatus for adjusting the height and inclination of roadway and greenway appurtenances |
| US20040071508A1 (en) * | 2002-10-07 | 2004-04-15 | Nadasde Wayne John | Method and apparatus for adjusting the height and inclination of roadway and greenway appurtenances |
| US6811350B2 (en) | 2002-10-07 | 2004-11-02 | Wayne John Nadasde | Method and apparatus for adjusting the height and inclination of roadway and greenway appurtenances |
| US20050058505A1 (en) * | 2002-10-07 | 2005-03-17 | Nadasde Wayne John | Method and apparatus for adjusting the height and inclination of roadway and greenway appurtenances |
| US20070039248A1 (en) * | 2003-06-18 | 2007-02-22 | Rhodes Derrick A | Utility portal |
| US20050011573A1 (en) * | 2003-07-14 | 2005-01-20 | American Boa, Inc. | Flexible liner air gap pipe |
| US6953302B1 (en) * | 2003-07-23 | 2005-10-11 | Kochling Edmund T | Adjustment riser for a manhole frame |
| US20070223997A1 (en) * | 2004-05-13 | 2007-09-27 | Aco Severin Ahlmann Gmbh & Co. Kg | Covered Plastic Lock |
| WO2008046668A1 (en) * | 2006-10-17 | 2008-04-24 | Bruno Zanatta | Kit for the adjustment of manholes for pits |
| US20130105503A1 (en) * | 2010-05-18 | 2013-05-02 | St Reproductive Technologies, Llc | Method and apparatus for suspending a container |
| US8870490B2 (en) | 2011-02-04 | 2014-10-28 | Opus International Consultants Limited | Adjustable supports for access hatch frames |
| US9121157B2 (en) | 2013-05-03 | 2015-09-01 | Willerding Acquisition Corp. | Manhole riser extension assembly |
| US9587368B2 (en) * | 2015-04-02 | 2017-03-07 | Robert T. Smith | Manhole repair bracket |
| CN104912110A (en) * | 2015-06-16 | 2015-09-16 | 常熟市华诚建设工程有限责任公司 | Splicing and adjusting manhole cover |
| US20230018046A1 (en) * | 2015-11-25 | 2023-01-19 | Flo-Water, Llc | Water inlet protection system |
| ES2684106A1 (en) * | 2017-03-30 | 2018-10-01 | Metropolitano de Tenerife, S.A. | LEVELING DEVICE FOR REGISTRATION AND MOUTH CAPS ASSOCIATE LEVELING PROCEDURE (Machine-translation by Google Translate, not legally binding) |
| US20190106857A1 (en) * | 2017-10-10 | 2019-04-11 | Canada Pipe Company ULC | Frame positioning device for positioning a frame over an inlet of a catch basin or manhole and method for positioning the same |
| EP3483343A1 (en) * | 2017-11-10 | 2019-05-15 | Orange | Frame for underground chamber cover |
| FR3073532A1 (en) * | 2017-11-10 | 2019-05-17 | Orange | FRAME FOR COVER OF UNDERGROUND ROOM |
| WO2019238795A3 (en) * | 2018-06-12 | 2020-03-05 | Wrekin Holdings Limited | Ground surface access assemblies |
| GB2590226A (en) * | 2018-06-12 | 2021-06-23 | Wrekin Holdings Ltd | Ground surface access assemblies |
| GB2590226B (en) * | 2018-06-12 | 2023-03-22 | Wrekin Holdings Ltd | Ground surface access assemblies |
| US20210291201A1 (en) * | 2018-09-14 | 2021-09-23 | Guntram Krettek | Method for fixing a metal sheet and filter device produced therewith |
| WO2021015742A1 (en) * | 2019-07-23 | 2021-01-28 | Sullair, Llc | Integrated lifting and pivoting device |
| CN114126977A (en) * | 2019-07-23 | 2022-03-01 | 寿力公司 | Lifting and pivoting integrated device |
| US11667442B2 (en) | 2019-07-23 | 2023-06-06 | Sullair, Llc | Integrated lifting and pivoting device |
| US11326321B2 (en) | 2020-02-28 | 2022-05-10 | Barrco, Inc. | Height-adjustable fixtures for buried tubulars and methods of adjusting the height-adjustable fixtures |
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