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US1639495A - Manhole - Google Patents

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US1639495A
US1639495A US15044226A US1639495A US 1639495 A US1639495 A US 1639495A US 15044226 A US15044226 A US 15044226A US 1639495 A US1639495 A US 1639495A
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sections
manhole
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William S Frame
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William S Frame
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/12Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14Covers for manholes or the like; Frames for covers
    • E02D29/1409Covers for manholes or the like; Frames for covers adjustable in height or inclination

Description

Aug. 16, 1927. W. s. FRAME MANHOLE Filed Nov. 24. 1926 2 Sheets-Sheet 1 WHL-EMMEN; E

FIG.)

6 www 3 if il. FN .2 ,0

FIC-).4

Aug- 16 1927' w. s. FRAME MANHOLE Filed Nov. 24, 1926 2 Shee'ts-Sheet 2 FIG.8

FIG 6 FIG."

FIGJO Parental Aug. '16, 1927.

UNITED @Ares WILLIAM S. FRAME, OF SCHENECTADY, NEW YORK.

MANiIoLE.

.Application led Novemb'er 24;, 1926. Serial No. 150,442.

My invention relates to manholes, of the type used to permit access to sewers, drains, conduits, and the like.

It has been theV practice heretofore to construct the manholes commonly used in city streets, and other locations, to permit access to drains, or water, gas, or electric mains, by first excavating a hole of suitable size, and form, and then building a foundation of concrete,'on which is erected a wall of bricks and mortar. After the brick work is completed, it is customarily Waterproofed by a coating of tar, or other suitable material.

A cast iron section for supporting the manhole cover Hush with the' surface of the street or sidewalk, is then set in place.

The ordinary construction above described is open to the serious disadvantages that only highly skilled masons can be used, and much time is lost in waiting for the cement foundation, and the motar in the walls, to harden. A further disadvantage is that the great weight of the structure necessitates a substantial and costly foundation. Where the earth is soft, or quick sand is encountered,

piling must be employed to support the.

foundation. I'

Among the objects of the present invention are to provide a sectional manhole construction Which can be quickly installed without the use of skilled labor; which can be economically manufactured and transported; which will be sufficiently light in weight kto permit an inexpensive foundation t0 be employed for its support; which will rovide a simple means for accurately aligning the top of the manhole with the slope of the surface of the place of embedment; and which will provide means for raising or lowering the top of the manhole without the necessity of destroyingl the surrounding pavement.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawing: Figure 1 is a vertical central section through a inanhole embodying my invention, the pavement and surrounding earth being also indicated in section; Fig. 2, a similar section through the top portion of a manhole embodying a horizontally tapered section used to bring the top of the manhole in alignment with the crown slope of a road; Fig. 3, a central vertical section, through the top portion of a manhole, illustrating my improved means for raising and lowering the top of the manhole; Figs. 4 and 5, similar'sections, illusti'ating structural modifications; Fi 6 a vertical central section of a manhoa, bodying two horizontally tapered sections, disposed so as to give the upper rim of the top. section the maximum incline; Fig. 7, a view, similar to Fig. 6, the tapered sections being disposed t0 position the upper rim of the top section horizontal; Fig. 8, an isometric .view'of one of the tapered sections shown in Fig. 6; Fig. 9, a central vertical section of a manhole, embodying two telescoping sections, and two unflangedv horizontally tapered spacing sections, interposed therebetween, the spacing sections being disposed so as to give the upper rim of the top section the maximum incline; Fig. 10, a view, similar to Fig. 9, the spacing sections being disposed to position the upper rim of the top section horizontal; and, Fig. 11, an isometric View of one of the tapered spacing rings.

In the practice of my invention, referring descriptively to the 'specific embodiment thereof which is herein exemplified, the manhole is shown embedded in the earth, with its riin flush with the surface of the road, 10. The in anhole embodies a foundation plate,` 11, which supports ai plurality of superposed sections,^l3, 14, l5, 16, 17, 18 and 19. Each of the sections here shown is in the form of a cylindrical wall, but they may be of any other cross section, and the tops of said sections are each formed with a peripheral olfset, or lip, to provide a horizontal supporting surface, 20, for the bottom of a superpOSed section, and a vertical flange, 21, adapted to prevent transverse displacement of the sections, and to provide a space for a seal of tai', or the like, whereby a leak-proof joiiitui'e may be effected between abutting sections.

rlhe lowerinost section, 19, i'ests directly on the foundation plate, 11.

To provide for the admission of pipes or' leads into the manhole, thewall of one of the sections, in this case section, 19, is formed with an opening communicating with an outwardly directed tubular extension, 23.

Sonie of the sections, in this case the sections 18 and 19, are made of greater diameter than the other sections, to provide ample interior space.

The sections, 17 and 16, are tapered, or

substantially frusto-conical in form, to provide for va reduction in the diameteriiof44 the manhole, at its top.

The sections, 15, 14 and 13, are similar 1n diameter, which diameter is Yless than that of the other sections, and they are of dlfferent depth, respectively. i

The peripheral offset at the top of section, 13, is adapted to receive and retain a suitable cover plate, 24.

Referring to Fig. 2, the top sectiop, 13, 1s horizontally tapered, to provide for aligning its cover -with the slopinor surfrice ot' a crowned roadway. It is to e understood that any of the sections may be horizontally tapered to effect the desired slope for the cover of the manhole.

InV practice, it sometimes happens that l the manhole, or the pavement, sinks, and' it is particularly desirable that means be pro-A vided to enable the top of the manhole to be raised or lowered without the necesslty of destroying the surrounding pavement. To

this end, I have provided the constructions illustrated in Figs. 3, 4; and 5. Referring Fig. 3, a straight cylindrical section, 25, 1s shown as superposedon section, 16. T elescopically fitted within the section, 25, 1s a section, 26, the top of which forms a seat, 2T, for the cover, 24, and an outwardly d1- rected horizontal fiange, 28. Spacing secing the depth of the spa-cing members, the

' top of the section, 25,*and the flange, 28. It

will be obvious that by adding, or taking out, a spacing member, or members, or varying the depth of the spacing members, the top of the manhole may be raised or lowered, to bring it Hush with the surface of the place of embedment.

Fig. 4 illustrates a structural modification, in which one of the bearing faces of section, 25, is inclined to the axis of the section, to effect the desired slope for the cover of the manhole.

As shown in Fig. 5, the section, 25, rests on a supporting ring, 33, which, in turn, rests directly on any suitable base.

In the construction shown in Figs. 6 and 7 the top section, 34, and the intermediate section, 35, are each made in the form of a cylindrical band, and each.is provided with a bearing surface, or seat, 36, extending substantially around the band, and disposed substantially throughout in a plane inclined to the axis ofthe band. It will be obvious that by disposing the sections so that `the lowest portions of the inclined bearing per rim of the top, section will be positioned substantially horizontal, as'shown in Fig. 7. Obviously, any suitable incline may be given to the rim of the top section, by relatlvely rotating the sections.

I n Figs 9 and 10, the cover section, yBZpis shown with a depending flange, 38, which telescopes into the lower section, 39. AInterposed between the two sections are three spacing sections, two of which, 40 and 41,

respectively, are each horizontally tapered to provide a bearing face, 42, inclined to the axis of the section. By rotating the spacing sections, the upper rim o the cover section may be adjusted from the horizontal position shown in Fig. 10, to the extreme inclined position shown in Fig. 9.

Preferably, each of the sectionsis made of cast iron, which material enables a construction of great strength, in proportion to its weight, to be produced, at a relatively low cost. It is within the contemplationl of the invention, however, to form the sections of any Aother suitable material. So far as I am aware, it is broadly novel to employ a horizontally tapered section to impart to the cover of the manhole a slope in accordance with the slope of the place of embedment. It is also broadly novel to provide means permitting the top of the manhole to be raised or lowered, without the necessity for destroying the surrounding pavement.

I claim as my invention and desire -to se- Vcure by Letters Patent:

1. A section of a sectional manhole, having the form ot an endless band', and comprising an inclined bearing surface extending substantially' entirely around the band, and disposed substantially, throughout its length in a planeinclined to the axis of the band.

2. A sectional manhole, embodying two sections, each having the form of an endless band, and comprising an inclined bearing surface extending substantially entirely around the band, and disposed substantially throughout its length in a plane inclined to the axis of the band, the inclined bearing surface of one section being juxtaposed to the inclined bearing surface of the other section.- i

3. A sectional manhole, comprising two sections, one of which is superposed on the other, each having the form of an endless n band, and each having a bearing surface ex- 'j tending substantially entirely around the band, the two bearing surfaces being juxtaposed,one of the bearing surfaces being inclined to the axis of the section.

4. A sectional manhole, comprising two sections, one of which is superposed on the other, each having the form of an endless band, and each having a bearing surface extending entirely around the band, the two vbearing surfaces being juxtaposed, each bearing surface being .inclined to the axis of its section, the two sections being adjustable by relative rotation on their inclined bearing surfaces, to vary the plane of the upper rim of the top of the manhole.

5. A sectional manhole comprising two sections, each having the form of an endless band, and each having a bearing surface extending substantially entirely around the band, each bearing surface being inclined to the axis of its section, the two sections being adjustable by relative rotation on their inclined bearing surfaces to vary the plane of the upper rim of the top of the manhole.

6. A sectional manhole, embodying a section having the form of a ring, and embodying a bearing surface extending substantially entirely around the ring, and inclined uniformly from one diametrically opposed side of the ring to the other.

7 A sectional manhole, comprising a section, having the form of a ring, tapered uniformly from one diametrically opposed side to the other.

8. A sectional manhole, comprising a section, having the form of a ring, and embodying a bearing surface extending substantially around the ring, and disposed substantially throughout its length in a plane .inclined to the axis of the section.

9. A sectional manhole, comprising a substantiall horizontal foundation, and a plurality o superposed ring shape sections, at least one of the sections having a seat concentric with the section, and so disposed and inclined as to incline the upper rim of the top section in accordance with the incline of the surface of the place of embedment of the manhole.

10. A sectional manhole, comprising a top cylindrical section; a lower cylindrical section telescoping with the top section and a ring shape spacing section, bearing on the lower section, and encircling and supporting the top section.

11. A sectional manhole, comprising a top cylindrical section; a lower cylindrical sect1on, telescoping with the top section; and a ring shape spacing section, bearing on the lower section, and encircling and supporting the top section, one of the sections having a seat concentric therewith, and so disposed and inclined as to incline the upper rim of the top section in accordance with the incline of the surface of the place of embedment of the manhole.

12. A sectional manhole, comprising a top cylindrical section; a lower cylindrical section telesco ing with the top section; and a plurality ofP ring shape spacing sections, one of which bears on the lower section, the said ring shape sections encirclingand supporting the top section.

13. A sectional manhole, comprising a top cylindrical section; a lower cylindrical section telescoping with the top section; and a plurality of ring shape spacing sections, one of which bears on the lower section, the said ring shape sections enclosing and supporting the top section, at least one of the sections having a seat concentrictherewith, and so disposed and'inclined as to incline the upper rim of the top section in accordance with the incline of the place of embedment of the manhole.

14. A sectional manhole, comprising a top cylindrical section; a lower cylindrical section; and a frusto-conical section interposed between the said two sections, one of the sections having a seat concentric therewith, and so disposed and inclined as to incline the upper rim of the top section in accordance with the incline of the place of embedment of the manhole.

WILLIAM S. FRAME.

Certificate of Correction.

Patent No. 1,639,495. Granted August 16, 1927, to

WILLIAM S. FRAME.

It is hereby certified that error appears in the printed specificationof the above-- numbered patent requiring Correction as follows: Page 2, line 30, beginning with the syllable sec, strike out all to and including the word members in line 31 and insert instead sectz'om 29, 30, 31 cmd 32, are fitted between; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Oce.

Signed and sealed this 4th day of October, A. D. 1927.

[SEAL] M. J. MOORE,

Acting Conv/nismiomr of Patents.

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Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431082A (en) * 1945-02-06 1947-11-18 Louise P Sayles Manhole adapter
US3250190A (en) * 1962-09-06 1966-05-10 William W Taylor Method and apparatus for installing manhole cover frames
US3362425A (en) * 1966-05-04 1968-01-09 Jay R Smith Mfg Co Adjustable top clean-outs
US3867804A (en) * 1973-06-08 1975-02-25 Herbert S Wilson Anchor bolt form
US3930372A (en) * 1973-11-28 1976-01-06 Johns-Manville Corporation Method and arrangement for controlling the position of an underground manhole assembly
US3968600A (en) * 1972-09-05 1976-07-13 National Utility Products Company Adjustable manhole cover support structure
US4102088A (en) * 1976-02-12 1978-07-25 Gustav Keller Manhole-pit lining and method of making and installing same
US4187647A (en) * 1977-10-25 1980-02-12 Margaret T. Hall Manhole extender elements
US4591290A (en) * 1982-03-22 1986-05-27 Everett J. Prescott, Inc. Combination adjustable valve box adapter and replacement for broken valve boxes
US4759656A (en) * 1986-09-29 1988-07-26 Stephen K. Wilson Construction of a manhole chimney
US4844402A (en) * 1988-07-01 1989-07-04 Ronald Werner Form for a mortar cap
US4867600A (en) * 1987-07-23 1989-09-19 Bowman Harold M Polygonal manhole cover support
US5205668A (en) * 1991-03-29 1993-04-27 At&T Bell Laboratories Manhole adapter
US5257652A (en) * 1992-09-10 1993-11-02 Total Containment, Inc. Fluid collection system for installation underground and method of installation
USRE34550E (en) * 1987-07-23 1994-02-22 Bowman; Harold M. Sturdy adjustable manhole cover support
US5299884A (en) * 1991-09-10 1994-04-05 Poly-Tec Products, Inc. Water lock method and apparatus
US5333490A (en) * 1987-10-01 1994-08-02 Total Containment, Inc. Secondary containment system using flexible piping
US5386669A (en) * 1993-03-15 1995-02-07 Almeida; Antonio V. Corrosion resistant leakproof plastic manhole system
US5423447A (en) * 1993-09-10 1995-06-13 Advanced Polymer Technology, Inc. Adjustable water-tight sump
US5525006A (en) * 1995-01-05 1996-06-11 Kilman Electriloc Inc. Flush mount well protector
US5628152A (en) * 1995-08-16 1997-05-13 Bowman; Harold M. Adjustable manhole cover support with shield
US5833392A (en) * 1996-06-11 1998-11-10 Advanced Polymer Technology, Inc. One-piece tank sump with integral dust cover
US5911537A (en) * 1997-02-06 1999-06-15 Pulver; Mark D. Parabolic cover for manhole
US5956905A (en) * 1997-02-06 1999-09-28 Wiedrich; Dwight G. Manhole adjusting extension member
US5961155A (en) * 1996-07-11 1999-10-05 Advanced Polymer Technology, Inc. Flexible entry boot
US5967567A (en) * 1998-01-15 1999-10-19 Advanced Polymer Technology, Inc. Matingly engaged flexible entry boot
US6007270A (en) * 1993-07-02 1999-12-28 Bowman; Harold M. Manhole frame assembly
US6086117A (en) * 1998-05-05 2000-07-11 Advanced Polymer Technology, Inc. Double booted flexible entry boot
USD429735S (en) 1998-07-23 2000-08-22 Advanced Polymer Technology, Inc. Integrally formed tank sump with lid
US6173997B1 (en) 1996-07-11 2001-01-16 Advanced Polymer Technology, Inc. Flexible entry boot
US6189717B1 (en) 1998-09-14 2001-02-20 Advanced Polymer Technology, Inc. Integrally formed tank sump with water resistant lid assembly
US6206609B1 (en) * 1999-08-13 2001-03-27 Royal Environmental Systems, Inc. Extension for a canal bed liner
WO2002018713A1 (en) * 2000-09-01 2002-03-07 Precision Cover Systems Adjustable utility access device
US6401409B1 (en) * 1998-05-27 2002-06-11 Michael C. Martin Underground storm shelter
US6457901B1 (en) * 2000-09-01 2002-10-01 Precision Cover Systems, Inc. Adjustable manhole apparatus
US6520713B2 (en) * 2001-03-22 2003-02-18 Precision Cover Systems, Inc. Height and angle adjustable utility access device and method
US6524026B2 (en) * 2001-03-22 2003-02-25 Precision Cover Systems, Inc. Adjustable height utility access device
WO2004031491A2 (en) * 2002-09-30 2004-04-15 Precision Cover Systems, Inc. Angle adjustable utility access and method
US20040120762A1 (en) * 2000-09-01 2004-06-24 Precision Cover Systems, Inc. Adjustable utility access
US20060078382A1 (en) * 2004-09-16 2006-04-13 Wilson Stephen K Construction of a foamed polymeric manhole chimney
WO2011063957A1 (en) * 2009-11-26 2011-06-03 Wavin B.V. Inspection chamber part and method for preparing such part for installation
US20110221614A1 (en) * 2010-03-11 2011-09-15 Khaled Jafar Al-Hasan Traffic Control System
US20110232208A1 (en) * 2010-03-26 2011-09-29 Ramin Tabibnia Apparatus for Establishing a Paver over a Subsurface
US20120199216A1 (en) * 2011-02-04 2012-08-09 Herbert John Schramer Drain Cover Adjuster
US8375551B2 (en) 2009-09-29 2013-02-19 Argonics, Inc. Method for covering an above ground access opening to a conduit assembly
US8870490B2 (en) 2011-02-04 2014-10-28 Opus International Consultants Limited Adjustable supports for access hatch frames
US20160097180A1 (en) * 2014-10-02 2016-04-07 Ruskon Betoni Oy Manhole and a method for providing a manhole
USD753800S1 (en) 2015-04-08 2016-04-12 David Callaghan Gas main gate box safety riser
US9879385B2 (en) 2010-03-26 2018-01-30 Ramin Tabibnia Apparatus and related methods of paving a subsurface

Cited By (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431082A (en) * 1945-02-06 1947-11-18 Louise P Sayles Manhole adapter
US3250190A (en) * 1962-09-06 1966-05-10 William W Taylor Method and apparatus for installing manhole cover frames
US3362425A (en) * 1966-05-04 1968-01-09 Jay R Smith Mfg Co Adjustable top clean-outs
US3968600A (en) * 1972-09-05 1976-07-13 National Utility Products Company Adjustable manhole cover support structure
US3867804A (en) * 1973-06-08 1975-02-25 Herbert S Wilson Anchor bolt form
US3930372A (en) * 1973-11-28 1976-01-06 Johns-Manville Corporation Method and arrangement for controlling the position of an underground manhole assembly
US4102088A (en) * 1976-02-12 1978-07-25 Gustav Keller Manhole-pit lining and method of making and installing same
US4187647A (en) * 1977-10-25 1980-02-12 Margaret T. Hall Manhole extender elements
US4591290A (en) * 1982-03-22 1986-05-27 Everett J. Prescott, Inc. Combination adjustable valve box adapter and replacement for broken valve boxes
US4759656A (en) * 1986-09-29 1988-07-26 Stephen K. Wilson Construction of a manhole chimney
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
US5333490A (en) * 1987-10-01 1994-08-02 Total Containment, Inc. Secondary containment system using flexible piping
US5490419A (en) * 1987-10-01 1996-02-13 Total Containment, Inc. Secondary containment system using flexible piping
US4844402A (en) * 1988-07-01 1989-07-04 Ronald Werner Form for a mortar cap
US5205668A (en) * 1991-03-29 1993-04-27 At&T Bell Laboratories Manhole adapter
US5299884A (en) * 1991-09-10 1994-04-05 Poly-Tec Products, Inc. Water lock method and apparatus
US5257652A (en) * 1992-09-10 1993-11-02 Total Containment, Inc. Fluid collection system for installation underground and method of installation
US5386669A (en) * 1993-03-15 1995-02-07 Almeida; Antonio V. Corrosion resistant leakproof plastic manhole system
US6007270A (en) * 1993-07-02 1999-12-28 Bowman; Harold M. Manhole frame assembly
US5423447A (en) * 1993-09-10 1995-06-13 Advanced Polymer Technology, Inc. Adjustable water-tight sump
US5525006A (en) * 1995-01-05 1996-06-11 Kilman Electriloc Inc. Flush mount well protector
US5628152A (en) * 1995-08-16 1997-05-13 Bowman; Harold M. Adjustable manhole cover support with shield
US5833392A (en) * 1996-06-11 1998-11-10 Advanced Polymer Technology, Inc. One-piece tank sump with integral dust cover
US5988944A (en) * 1996-06-11 1999-11-23 Advanced Polymer Technology, Inc. One-piece tank sump with integral dust cover
US6173997B1 (en) 1996-07-11 2001-01-16 Advanced Polymer Technology, Inc. Flexible entry boot
US5961155A (en) * 1996-07-11 1999-10-05 Advanced Polymer Technology, Inc. Flexible entry boot
US6612620B1 (en) 1996-07-11 2003-09-02 Advanced Polymer Technology, Inc. Flexible entry boot
US5956905A (en) * 1997-02-06 1999-09-28 Wiedrich; Dwight G. Manhole adjusting extension member
US5911537A (en) * 1997-02-06 1999-06-15 Pulver; Mark D. Parabolic cover for manhole
US6145891A (en) * 1997-09-29 2000-11-14 Advanced Polymer Technology, Inc. Double booted flexible entry boot
US5967567A (en) * 1998-01-15 1999-10-19 Advanced Polymer Technology, Inc. Matingly engaged flexible entry boot
US6086117A (en) * 1998-05-05 2000-07-11 Advanced Polymer Technology, Inc. Double booted flexible entry boot
US6401409B1 (en) * 1998-05-27 2002-06-11 Michael C. Martin Underground storm shelter
USD429735S (en) 1998-07-23 2000-08-22 Advanced Polymer Technology, Inc. Integrally formed tank sump with lid
US6189717B1 (en) 1998-09-14 2001-02-20 Advanced Polymer Technology, Inc. Integrally formed tank sump with water resistant lid assembly
US6206609B1 (en) * 1999-08-13 2001-03-27 Royal Environmental Systems, Inc. Extension for a canal bed liner
US20040120762A1 (en) * 2000-09-01 2004-06-24 Precision Cover Systems, Inc. Adjustable utility access
US6457901B1 (en) * 2000-09-01 2002-10-01 Precision Cover Systems, Inc. Adjustable manhole apparatus
US6955499B2 (en) 2000-09-01 2005-10-18 Precision Cover Systems, Inc. Adjustable utility access
US6799920B2 (en) * 2000-09-01 2004-10-05 Precision Cover Systems, Inc. Angle adjustable utility access and method
US6695526B2 (en) * 2000-09-01 2004-02-24 Precision Cover Systems, Inc. Adjustable manhole apparatus
WO2002018713A1 (en) * 2000-09-01 2002-03-07 Precision Cover Systems Adjustable utility access device
US6524026B2 (en) * 2001-03-22 2003-02-25 Precision Cover Systems, Inc. Adjustable height utility access device
US6520713B2 (en) * 2001-03-22 2003-02-18 Precision Cover Systems, Inc. Height and angle adjustable utility access device and method
WO2004031491A2 (en) * 2002-09-30 2004-04-15 Precision Cover Systems, Inc. Angle adjustable utility access and method
WO2004031491A3 (en) * 2002-09-30 2004-07-08 Prec Cover Systems Inc Angle adjustable utility access and method
US20060078382A1 (en) * 2004-09-16 2006-04-13 Wilson Stephen K Construction of a foamed polymeric manhole chimney
US7401998B2 (en) 2004-09-16 2008-07-22 David M. Wahl Construction of a foamed polymeric manhole chimney
US8375551B2 (en) 2009-09-29 2013-02-19 Argonics, Inc. Method for covering an above ground access opening to a conduit assembly
WO2011063957A1 (en) * 2009-11-26 2011-06-03 Wavin B.V. Inspection chamber part and method for preparing such part for installation
EP2333170A1 (en) * 2009-11-26 2011-06-15 Wavin B.V. Inspection chamber part and method for preparing such part for installation
US20110221614A1 (en) * 2010-03-11 2011-09-15 Khaled Jafar Al-Hasan Traffic Control System
US8395530B2 (en) * 2010-03-11 2013-03-12 Khaled Jafar Al-Hasan Traffic control system
US20110232208A1 (en) * 2010-03-26 2011-09-29 Ramin Tabibnia Apparatus for Establishing a Paver over a Subsurface
US8453391B2 (en) * 2010-03-26 2013-06-04 Ramin Tabibnia Apparatus for establishing a paver over a subsurface
US9879385B2 (en) 2010-03-26 2018-01-30 Ramin Tabibnia Apparatus and related methods of paving a subsurface
US20120199216A1 (en) * 2011-02-04 2012-08-09 Herbert John Schramer Drain Cover Adjuster
US8870490B2 (en) 2011-02-04 2014-10-28 Opus International Consultants Limited Adjustable supports for access hatch frames
US20160097180A1 (en) * 2014-10-02 2016-04-07 Ruskon Betoni Oy Manhole and a method for providing a manhole
USD753800S1 (en) 2015-04-08 2016-04-12 David Callaghan Gas main gate box safety riser

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