US1458391A - Cover for manholes and analogous devices - Google Patents
Cover for manholes and analogous devices Download PDFInfo
- Publication number
- US1458391A US1458391A US571066A US57106622A US1458391A US 1458391 A US1458391 A US 1458391A US 571066 A US571066 A US 571066A US 57106622 A US57106622 A US 57106622A US 1458391 A US1458391 A US 1458391A
- Authority
- US
- United States
- Prior art keywords
- stem
- cover
- handle
- curb
- cover plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J13/00—Covers or similar closure members for pressure vessels in general
- F16J13/02—Detachable closure members; Means for tightening closures
- F16J13/08—Detachable closure members; Means for tightening closures attached by one or more members actuated to project behind a part or parts of the frame
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/6851—With casing, support, protector or static constructional installations
- Y10T137/6966—Static constructional installations
- Y10T137/6991—Ground supporting enclosure
- Y10T137/6995—Valve and meter wells
- Y10T137/7021—Covers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7069—With lock or seal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/0801—Multiple
- Y10T292/0803—Sliding and swinging
- Y10T292/0805—Combined motion
Definitions
- his invention relates to an improved cover for manholes and analogous devices and the particular improvements therein reside in a means for locking the cover plate to the base ring or curb of the manhole or analogous device.
- the improved locking means is mounted upon the unexposed side of the cover plate but may be manually operated by means of a handle located on the exposed side of the plate. be swung to an inoperative and out-of-theway position and when in this position, it is locked so that the locking means between the cover plate and the base ring or curb cannot be accidentally unlocked.
- the cover plate is of such construction that it may be made economically by molding or casting and the parts of the locking means are of simple construction so that very little machine work will be necessary in con structing the parts so that they can be assembled and fitted together.
- the device is therefore of simple, strong, durable and in expensive construction, which are highly desirable features in a device of this character.
- Fig. 1 is a top plan view of a manhole base ring or curb and a cover plate therefor constructed so as to embody the principles of the present invention.
- Fig. 2 is a central vertical sectional view through the base ring or curb and cover plate taken substantially on the plane indicated by the line 2-2 of Fig. 1 and illustrating the locking means in locked position and the operating handle in inoperative position.
- Fig. 3 is a bottom view of the cover plate; and I Fig. 4: is a central vertical sectional view of the cover plate, showing the operating handle for the locking means in operative position.
- the numeral 1 designates the base ring or curb of a manhole. This is of the usual construction, being cast in one piece, and is intended to be embedded in the. earth,
- a flange 2 Formed integrally with the base ring or curb 1 is a flange 2. This flange 2 is located a slight distance below the upper edge of the ring 1. and it projects inwardly therefrom so as to form an annular shoulder upon which a cover plate may rest.
- the numeral 8 represents a cover plate which is constructed so as to rest upon the annular sh the flange 2 of the base ring or curb 1.
- the plate 3 is preferably made by casting or molding. Its central portion is oi. increased thickness and is provided with a hole 4.
- the plate3 may be reinforced by means of ribs 5 which extend radially from its central thickened portion to its edge.
- lugs'6 having holes 7 therein.
- This means preferably consists of a bar 8, to the ends of which are pivotally connected one of the ends of a pair of bolts 9.
- These bolts 9 pass through the holes 7 formed in the lugs 6 which depend from the lower side of the plate 3 and when projected, they have their outer ends disposed beyond the flange 2 of the base ring or curb 1 so that they will prevent the cover plate 3 from being removed oulder formed by ed by stop lugs 8 from the ring or curb 1.
- the cover plate 8 can be removed from the base ring or curb 1. Retracting movement of the bolts 9 is 'efiectcarried by the cover plate 3 and which are engageable by the bar 8.
- stem 10 carries a ban is in the form of a loop or bail and is piv-
- the projecting "and retracting of the bolts 9 is effected by turning of the bar 8.
- the bar 8 is carried upon the lower end of a stem l0-which extends through hole 4 formed in the central portion of the plate 3.
- This handle 11 otally connected to the stem so that it can be extended longitudinallyof the latter and the stem.
- the device isfhighly desirable because the locking 9 accidentally retractit is desired to unlock the cover plate 3 from the base ring or receiving said handle when ally with respect to said stem, said groove afiixed my signature.
- means is such that it maybe easilyoperated but when once looked, it cannot be accidentally unlocked.
- a cover ior'lmanholes and analogous devices comprising a plate having a hole.
- a devices comprising a plate'having a hole extending. therethrough, locking means mounted upon the plate, 'a'stem extending through said hole andturnably and slidably mounted therein;
- said stem being connected at its lower end to said locking means for operating the "same, and a Ihandleifor turningsaid stem; said handle being pivotally' connected 'to the upper end of said stem so as'to be extended either on a plane of the axis of the latter or laterally thereof, said platebeing provided at its upper side with a grooveior swung laterbeing shaped to, conformv to the shapeoi said handle and being located so as to ,prevent said handle and therefore said stem from turning until said handle is entirely removed from saidgroove.
Description
June 12, 11923.
T. J. BURTON COVER FOR MANHOLES AND ANALOGOUS DEVICES Filed June 26, 1922 Patented dune l2, i923.
TATES Lassen THOMAS JAMES BURTON, OEIMURIPHYSBORO, ILLINOIS.
COVER FOR MANHOLES AND ANALOGOUS DEVICES.
Application filed June 26, 1922. Serial No. 571,066.
To all whom may concern: I
Be it known that I, THOMAS J. BURTON, a citizen of the United States, residing at Mun physboro, in the county of Jackson'and State of Illinois, have invented certain new and useful Improvements in Covers for Manholes and Analogous Devices; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
his invention relates to an improved cover for manholes and analogous devices and the particular improvements therein reside in a means for locking the cover plate to the base ring or curb of the manhole or analogous device.
The improved locking means is mounted upon the unexposed side of the cover plate but may be manually operated by means of a handle located on the exposed side of the plate. be swung to an inoperative and out-of-theway position and when in this position, it is locked so that the locking means between the cover plate and the base ring or curb cannot be accidentally unlocked.
The cover plate is of such construction that it may be made economically by molding or casting and the parts of the locking means are of simple construction so that very little machine work will be necessary in con structing the parts so that they can be assembled and fitted together. The device is therefore of simple, strong, durable and in expensive construction, which are highly desirable features in a device of this character.
-The novelty of the invention resides in the various details of construction and the combination and arrangement of parts which are hereinafter fully described and claimed and shown in the accompanying drawing.
In the accompanying drawing which forms a part of this specification:
Fig. 1 is a top plan view of a manhole base ring or curb and a cover plate therefor constructed so as to embody the principles of the present invention.
Fig. 2 is a central vertical sectional view through the base ring or curb and cover plate taken substantially on the plane indicated by the line 2-2 of Fig. 1 and illustrating the locking means in locked position and the operating handle in inoperative position.
This handle is mounted so that it can Fig. 3 is a bottom view of the cover plate; and I Fig. 4: is a central vertical sectional view of the cover plate, showing the operating handle for the locking means in operative position.
It is to be understood that the principles of the present invention may be embodied in connect-ion with manholes, coalhol es, cis tern tops, water covers, gas meter covers, and analogous devices, but for illustrative purposes, an embodiment in connection with a manhole cover has been selected, v
In the illustrated. embodiment of the invention, the numeral 1 designates the base ring or curb of a manhole. This is of the usual construction, being cast in one piece, and is intended to be embedded in the. earth,
particularly in a street or road, so that its upper edge will be flush with the surface of the street or road. Formed integrally with the base ring or curb 1 is a flange 2. This flange 2 is located a slight distance below the upper edge of the ring 1. and it projects inwardly therefrom so as to form an annular shoulder upon which a cover plate may rest.
In the drawing, the numeral 8 represents a cover plate which is constructed so as to rest upon the annular sh the flange 2 of the base ring or curb 1. When the cover plate 3 is in place upon the ring or curb 1, its upper side will be substantially flush with the upper edge of the ring or curb. The plate 3 is preferably made by casting or molding. Its central portion is oi. increased thickness and is provided with a hole 4. If desired, the plate3 may be reinforced by means of ribs 5 which extend radially from its central thickened portion to its edge. Depending from the lower side of the plate 8 at diametrically opposite points are lugs'6 having holes 7 therein.
Mounted on the lower side of the plate 3 is an improved means for locking the latter to the base ring or curb 1. This means preferably consists of a bar 8, to the ends of which are pivotally connected one of the ends of a pair of bolts 9. These bolts 9 pass through the holes 7 formed in the lugs 6 which depend from the lower side of the plate 3 and when projected, they have their outer ends disposed beyond the flange 2 of the base ring or curb 1 so that they will prevent the cover plate 3 from being removed oulder formed by ed by stop lugs 8 from the ring or curb 1. However, when the bolts 9 areretracted, the cover plate 8 can be removed from the base ring or curb 1. Retracting movement of the bolts 9 is 'efiectcarried by the cover plate 3 and which are engageable by the bar 8.
. stem 10 carries a ban is in the form of a loop or bail and is piv- The projecting "and retracting of the bolts 9 is effected by turning of the bar 8. In order to do this, the bar 8 is carried upon the lower end of a stem l0-which extends through hole 4 formed in the central portion of the plate 3. Theupper end'o'f the dle 11. This handle 11 otally connected to the stem so that it can be extended longitudinallyof the latter and the stem.
also so that it can be entended laterally of 3 be disposed out of the way and at the same time it will be locked so that it cannotbe turned and the bolts ed. When, however,
curb 1, it isonly necessaryto swing the handle 11 upwardly so asto bring it lon- I gitudinally with respect to the stem 10, then to pull upwardly upon the handle until it is "entirely withdrawn from the recess or groove 12 and finally toturn the 'hand'le so as to turn thebar 8 and retract the bolts 9. It will therefore be seen that the stemlO 'is not only turnably mounted in the [hole t in the cover plate 3, but is also slidably mounted in said hole.
From.-the foregoing description taken in connection with the accompanying drawing,-it will be seenthat the device is of very simple construction and can be made economically since very little if any machine work will be necessary in order to make its various parts properly fit together.
Furthermore, it will be realizedthatthe device isfhighly desirable because the locking 9 accidentally retractit is desired to unlock the cover plate 3 from the base ring or receiving said handle when ally with respect to said stem, said groove afiixed my signature.
means is such that it maybe easilyoperated but when once looked, it cannot be accidentally unlocked.
Since various changes in form, proportion, and in the minor details of construction may be madewithout departing from the principle or sacrificing any or" the advantages of the invention, it is to be understood that such may be made within the meaning and scope of the appended claims.
,. WVhat is claimed is:
1. A cover ior'lmanholes and analogous devices comprising a plate having a hole.
extending therethrough, locking means mounted on one side of said plate, a stem extending through said hole I and turnably and slidably mounted therein, said stem being connected at one end tosaid locking same, and. a handle means for operating the said handle being for turning said stem, pivotally connected to stem so as to be extended either on-a plane of the axis of the'latter or'laterally'thereof, said'plate having "its outer side provided with a recess'for receivingsaid handle when swung laterally with said recess being as to prevent said handle and-therefore {said the other end of said respect to said stem, located and constructed so stem from turning until said'jhandle-is entirely removed outof said recess. 7 2. A devices comprising a plate'having a hole extending. therethrough, locking means mounted upon the plate, 'a'stem extending through said hole andturnably and slidably mounted therein;
said stem being connected at its lower end to said locking means for operating the "same, and a Ihandleifor turningsaid stem; said handle being pivotally' connected 'to the upper end of said stem so as'to be extended either on a plane of the axis of the latter or laterally thereof, said platebeing provided at its upper side with a grooveior swung laterbeing shaped to, conformv to the shapeoi said handle and being located so as to ,prevent said handle and therefore said stem from turning until said handle is entirely removed from saidgroove. In testimony whereof I have hereunto THOMAS JAMES BURTON};
cover for .manhole's'and analogouslower side of said
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US571066A US1458391A (en) | 1922-06-26 | 1922-06-26 | Cover for manholes and analogous devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US571066A US1458391A (en) | 1922-06-26 | 1922-06-26 | Cover for manholes and analogous devices |
Publications (1)
Publication Number | Publication Date |
---|---|
US1458391A true US1458391A (en) | 1923-06-12 |
Family
ID=24282197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US571066A Expired - Lifetime US1458391A (en) | 1922-06-26 | 1922-06-26 | Cover for manholes and analogous devices |
Country Status (1)
Country | Link |
---|---|
US (1) | US1458391A (en) |
Cited By (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2791792A (en) * | 1954-08-04 | 1957-05-14 | Sr Samuel B Shearer | Slotted outlet fixture for wallinstalled vacuum cleaning systems |
US4143988A (en) * | 1978-07-28 | 1979-03-13 | Aggregates Equipment, Inc. | Manhole riser |
US4630962A (en) * | 1982-11-23 | 1986-12-23 | Roland Thomann | Drainage channel with locking grate |
US4902165A (en) * | 1988-02-19 | 1990-02-20 | Embree Lewis A | Locking valve cover |
US4964755A (en) * | 1989-04-18 | 1990-10-23 | Lew-Mor, Inc. | Manhole cover lock apparatus |
US5082392A (en) * | 1991-03-27 | 1992-01-21 | Tony Marchese | Manhole cover lock with spring biased locking bars |
US5234029A (en) * | 1992-07-17 | 1993-08-10 | Cott Manufacturing Company | Safety lockout device for utility control |
US5324135A (en) * | 1993-04-28 | 1994-06-28 | Dennis Smith | Locking cover |
US5328291A (en) * | 1992-09-24 | 1994-07-12 | Wisniewski Robert S | Locking manhole insert |
US5871030A (en) * | 1997-09-04 | 1999-02-16 | Inner-Tite Corp. | Curb box locking device |
US6584734B2 (en) * | 1999-12-15 | 2003-07-01 | Larry Mihalicz | Locking ground hole cover |
US6739796B1 (en) | 2003-03-21 | 2004-05-25 | Philip W. Del Nero | High security manhole insert cover |
US20040244444A1 (en) * | 2003-06-06 | 2004-12-09 | John Wadsworth | Portable conduit locking security system |
GB2418446A (en) * | 2004-09-22 | 2006-03-29 | Kevin Patrick Mcsweeney | Manhole cover |
US7144189B1 (en) * | 2002-09-06 | 2006-12-05 | Brad Bongiovanni | Locking cover for wells and underground tanks |
US20080028688A1 (en) * | 2003-10-09 | 2008-02-07 | Hydrotec Technologies Gmbh & Co.Kg | Lid for a Shaft Cover and Shaft Cover |
US7347070B1 (en) * | 2006-11-15 | 2008-03-25 | David Spector | Locking access box cover |
US20080168808A1 (en) * | 2004-07-14 | 2008-07-17 | Hydrotec Technologies Aktiengesellschaft | Device for Locking a Cover of a Manhole Top, and Manhole Top |
US20080256997A1 (en) * | 2007-04-18 | 2008-10-23 | Mcgard Llc | Security Key Tool For Manhole Access Opening Security Device |
US20080260460A1 (en) * | 2007-04-18 | 2008-10-23 | Mcgard Llc | Security Device For Manhole Access Opening |
US20090199490A1 (en) * | 2006-05-01 | 2009-08-13 | Stephen Hockham | Cover for a manhole |
US20090255183A1 (en) * | 2008-04-09 | 2009-10-15 | Mcgard Llc | Self-locking manhole cover |
US20110148631A1 (en) * | 2009-12-21 | 2011-06-23 | Mcgard Llc | Manhole Security Cover |
US20120036787A1 (en) * | 2009-05-12 | 2012-02-16 | 1279881 Alberta Ltd. (O/A Encompass Industries) | Locking core plug |
US20140109486A1 (en) * | 2008-05-22 | 2014-04-24 | Mcgard Llc | Corrosion-Resistant Self-Locking Manhole Cover |
US8888400B2 (en) | 2010-10-07 | 2014-11-18 | Mcgard Llc | Corrosion-resistant self-locking manhole cover |
US9127431B2 (en) | 2010-10-07 | 2015-09-08 | Mcgard Llc | Manhole security cover |
US20160258191A1 (en) * | 2015-03-06 | 2016-09-08 | Diversatech, Inc. | Locking cover for construction vault |
US20180100286A1 (en) * | 2015-09-17 | 2018-04-12 | Neenah Foundry Company | Manhole cover assembly |
CN109292210A (en) * | 2017-07-24 | 2019-02-01 | 利普乐普股份有限公司 | Intelligent carafe |
US10954649B2 (en) | 2017-04-19 | 2021-03-23 | Neenah Foundry Company | Floating manhole cover assembly |
US10968595B2 (en) | 2015-09-17 | 2021-04-06 | Neenah Foundry Company | Manhole cover assembly |
US11414829B2 (en) | 2019-10-07 | 2022-08-16 | Neenah Foundry Company | Hybrid manhole cover |
US20230235730A1 (en) * | 2022-01-27 | 2023-07-27 | Spm Oil & Gas Inc. | Retainer Assembly for Pump and Methods |
-
1922
- 1922-06-26 US US571066A patent/US1458391A/en not_active Expired - Lifetime
Cited By (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2791792A (en) * | 1954-08-04 | 1957-05-14 | Sr Samuel B Shearer | Slotted outlet fixture for wallinstalled vacuum cleaning systems |
US4143988A (en) * | 1978-07-28 | 1979-03-13 | Aggregates Equipment, Inc. | Manhole riser |
US4630962A (en) * | 1982-11-23 | 1986-12-23 | Roland Thomann | Drainage channel with locking grate |
USRE33439E (en) * | 1982-11-23 | 1990-11-13 | Abt, Inc. | Drainage channel with locking grate |
US4902165A (en) * | 1988-02-19 | 1990-02-20 | Embree Lewis A | Locking valve cover |
US4964755A (en) * | 1989-04-18 | 1990-10-23 | Lew-Mor, Inc. | Manhole cover lock apparatus |
US5082392A (en) * | 1991-03-27 | 1992-01-21 | Tony Marchese | Manhole cover lock with spring biased locking bars |
US5234029A (en) * | 1992-07-17 | 1993-08-10 | Cott Manufacturing Company | Safety lockout device for utility control |
US5328291A (en) * | 1992-09-24 | 1994-07-12 | Wisniewski Robert S | Locking manhole insert |
US5324135A (en) * | 1993-04-28 | 1994-06-28 | Dennis Smith | Locking cover |
US5871030A (en) * | 1997-09-04 | 1999-02-16 | Inner-Tite Corp. | Curb box locking device |
US6584734B2 (en) * | 1999-12-15 | 2003-07-01 | Larry Mihalicz | Locking ground hole cover |
US7726902B1 (en) | 2002-09-06 | 2010-06-01 | Brad Bongiovanni | Locking cover for wells and underground tanks |
US7144189B1 (en) * | 2002-09-06 | 2006-12-05 | Brad Bongiovanni | Locking cover for wells and underground tanks |
US6739796B1 (en) | 2003-03-21 | 2004-05-25 | Philip W. Del Nero | High security manhole insert cover |
US20040244444A1 (en) * | 2003-06-06 | 2004-12-09 | John Wadsworth | Portable conduit locking security system |
US20080028688A1 (en) * | 2003-10-09 | 2008-02-07 | Hydrotec Technologies Gmbh & Co.Kg | Lid for a Shaft Cover and Shaft Cover |
US20080168808A1 (en) * | 2004-07-14 | 2008-07-17 | Hydrotec Technologies Aktiengesellschaft | Device for Locking a Cover of a Manhole Top, and Manhole Top |
GB2418446A (en) * | 2004-09-22 | 2006-03-29 | Kevin Patrick Mcsweeney | Manhole cover |
GB2418446B (en) * | 2004-09-22 | 2010-06-02 | Kevin Patrick Mcsweeney | Cover |
US20090199490A1 (en) * | 2006-05-01 | 2009-08-13 | Stephen Hockham | Cover for a manhole |
US7347070B1 (en) * | 2006-11-15 | 2008-03-25 | David Spector | Locking access box cover |
US20080256997A1 (en) * | 2007-04-18 | 2008-10-23 | Mcgard Llc | Security Key Tool For Manhole Access Opening Security Device |
US20080260460A1 (en) * | 2007-04-18 | 2008-10-23 | Mcgard Llc | Security Device For Manhole Access Opening |
US7704010B2 (en) * | 2007-04-18 | 2010-04-27 | Mcgard Llc | Security device for manhole access opening |
US7798742B2 (en) * | 2007-04-18 | 2010-09-21 | Mcgard, Llc | Security key tool for manhole access opening security device |
US20090255183A1 (en) * | 2008-04-09 | 2009-10-15 | Mcgard Llc | Self-locking manhole cover |
US7896574B2 (en) | 2008-04-09 | 2011-03-01 | Mcgard Llc | Self-locking manhole cover |
US20140109486A1 (en) * | 2008-05-22 | 2014-04-24 | Mcgard Llc | Corrosion-Resistant Self-Locking Manhole Cover |
US9115479B2 (en) | 2008-05-22 | 2015-08-25 | Mcgard Llc | Corrosion-resistant self-locking manhole cover |
US9157212B2 (en) * | 2008-05-22 | 2015-10-13 | Mcgard Llc | Corrosion-resistant self-locking manhole cover |
US20120036787A1 (en) * | 2009-05-12 | 2012-02-16 | 1279881 Alberta Ltd. (O/A Encompass Industries) | Locking core plug |
US8689488B2 (en) * | 2009-05-12 | 2014-04-08 | 1279881 Alberta Ltd. | Locking core plug |
US20110148631A1 (en) * | 2009-12-21 | 2011-06-23 | Mcgard Llc | Manhole Security Cover |
US8674830B2 (en) | 2009-12-21 | 2014-03-18 | Mcgard Llc | Manhole security cover |
US8888400B2 (en) | 2010-10-07 | 2014-11-18 | Mcgard Llc | Corrosion-resistant self-locking manhole cover |
US9127431B2 (en) | 2010-10-07 | 2015-09-08 | Mcgard Llc | Manhole security cover |
US20160258191A1 (en) * | 2015-03-06 | 2016-09-08 | Diversatech, Inc. | Locking cover for construction vault |
US9677301B2 (en) * | 2015-03-06 | 2017-06-13 | Diversatech, Inc. | Locking cover for construction vault |
US20180100286A1 (en) * | 2015-09-17 | 2018-04-12 | Neenah Foundry Company | Manhole cover assembly |
US10968595B2 (en) | 2015-09-17 | 2021-04-06 | Neenah Foundry Company | Manhole cover assembly |
US11001982B2 (en) * | 2015-09-17 | 2021-05-11 | Neenah Foundry Company | Manhole cover assembly |
US10954649B2 (en) | 2017-04-19 | 2021-03-23 | Neenah Foundry Company | Floating manhole cover assembly |
CN109292210A (en) * | 2017-07-24 | 2019-02-01 | 利普乐普股份有限公司 | Intelligent carafe |
US11414829B2 (en) | 2019-10-07 | 2022-08-16 | Neenah Foundry Company | Hybrid manhole cover |
US20230235730A1 (en) * | 2022-01-27 | 2023-07-27 | Spm Oil & Gas Inc. | Retainer Assembly for Pump and Methods |
US11852127B2 (en) * | 2022-01-27 | 2023-12-26 | Spm Oil & Gas Inc. | Retainer assembly for pump and methods |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US1458391A (en) | Cover for manholes and analogous devices | |
US1400399A (en) | Cistern-top | |
US1693190A (en) | Manhole cover | |
US1902731A (en) | Locking cover | |
US1613926A (en) | Closet connection | |
US2710491A (en) | Ground vase | |
US981262A (en) | Service and valve box for water and gas. | |
US1220296A (en) | Irrigating-valve. | |
US961178A (en) | Curb-box. | |
US2018534A (en) | Fill pipe cap | |
US569819A (en) | Sylvania | |
US125623A (en) | Improvement in locks for can-covers | |
US307101A (en) | Faucet-guard | |
US643108A (en) | Street-box for underground mains. | |
US2399578A (en) | Lock valve | |
US790034A (en) | Manhole-cover. | |
US1332692A (en) | Irrigation-valve | |
US1318989A (en) | Eloat-valve | |
US948001A (en) | Curb-box. | |
US1583433A (en) | Can structure | |
US1287189A (en) | Irrigating-valve. | |
US192340A (en) | Improvement in street stop-cock boxes for gas or water | |
US1254386A (en) | Locking-coupling. | |
US991531A (en) | Switch-stand. | |
US304684A (en) | Hawlby adams |