GB2617091A - A ground surface access assembly - Google Patents
A ground surface access assembly Download PDFInfo
- Publication number
- GB2617091A GB2617091A GB2204410.1A GB202204410A GB2617091A GB 2617091 A GB2617091 A GB 2617091A GB 202204410 A GB202204410 A GB 202204410A GB 2617091 A GB2617091 A GB 2617091A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cover
- ground surface
- access assembly
- support frame
- aperture
- 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.)
- Pending
Links
- 239000011800 void material Substances 0.000 claims abstract description 9
- 238000003780 insertion Methods 0.000 claims description 16
- 230000037431 insertion Effects 0.000 claims description 16
- 230000002787 reinforcement Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- 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
A ground surface access assembly 10 comprising a support frame 12, having at least three frame sidewall portions 14, a base flange 16 and further comprising a plurality of shelf members 18 that extend sideways and inwardly from at least two of said frame sidewalls configured in use to support a manhole cover tray within said support frame. The manhole cover tray comprises at least three cover sidewall portions connected to and located upon a floor portion, at least one of said cover sidewalls having a sideways and outwardly extending projection 26a with an aperture/keyhole 28 provided, in use, to allow engagement with a cover lifting tool T inserted through said aperture/keyhole, so as to enter a void (V) located between an adjacent/associated frame sidewall and cover sidewall.
Description
A Ground Surface Access Assembly
Technical Field
This invention relates to a ground surface access assembly (GSAA), and in particular one suited for use with paved areas, using block paving.
Background Art
Ground surface access assemblies (GSAAs) are frequently used to gain access to underground chambers, to thereby access drainage systems, water supply stop-cocks, water meters etc., frequently located beneath paved areas including roadways, street pavements, and domestic and privately owned areas.
Known GSAA systems used for the above application generally comprise a rectangular cover member in the form of a tray, each corner of the tray having a separate triangular portion; provided to allow insertion of a lifting tool etc. This has the disadvantage that the space left in the cover tray for insertion of a matrix of individual paving blocks is typically octagonal (plan view); which then requires tedious angled cutting (45°) of at least several individual blocks so that the matrix substantially fills the remaining space within the removable cover.
In the UK, such known GSAA systems commonly utilise a "standard" lifting tool according to BS7903 2020, during placement or removal of the associated covers.
Summary of Invention
An aim of the present invention is to provide a ground surface access assembly (GSAA) comprising a support frame and a removable cover member, suitable for use in paved areas that provides discrete provisions for the insertion of lifting tools and retaining/locking members.
A further aim is to provide a GSAA cover member, in the form of a tray that has provision for insertion of lifting tools and at the same time provides a rectangular (plan view) area for insertion of block paving members and thereby avoids the disadvantages of conventional systems, wherein some individual block paving members housed within said cover member require tedious cutting during installation.
A further aim is to provide a GSAA cover member, in the form of a tray that has provision for the in-use insertion of cover retaining/locking members and at the same time provides a rectangular (plan view) area for insertion of block paving members.
In one aspect the invention comprises a ground surface access assembly (10) having a support frame (12), surrounding and defining an aperture (A); said support frame comprising at least three frame sidewall portions (14) located upon, or integrally connected to, a base flange (16); said support frame (12) further comprising one or more shelf members (18) that extend sideways and inwardly from at least two of said frame sidewalls (14), configured in use to support a cover tray (20) within said support frame (12); said cover tray also comprising at least three cover sidewall portions (22) connected to and located upon a floor portion (24); wherein at least one of said cover sidewalls (22) has a sideways and outwardly extending projection (26a) with an aperture/keyhole (28) provided, in use, to allow engagement with a cover lifting tool (T), inserted through said aperture/keyhole (28) between adjacent/associated frame sidewall (14a) and cover sidewall (22a).
In the above aspect, the lifting tool (T) may be a lifting key (K) comprising a handle, a shaft and a key-head where the shaft and key head are generally "L-shaped".
In a preferred embodiment the aperture/keyhole (28) shape results from the combination of a rectangular component and a "horse-shoe" shaped component; this allows the use of a conventional/standard lifting key (K) comprising a shaft and a "T-shaped" key head (as illustrated in Figure 17).
Thus, in such a preferred embodiment the aperture/keyhole (28) further comprises a rectangular portion, provided to allow insertion of a conventional lifting key; initially by downward movement, then sideways movement and finally inward movement, all relative to the cover tray (20).
Preferably, said aperture/keyhole (28) is generally "L-Shaped" in plan-view, thereby allowing insertion of a conventional lifting key; initially by downward movement, then sideways movement and finally inward movement, all relative to the cover tray (20) Preferably, said inwardly extending shelf member(s) (18) comprise inwardly extending portions of said base flange (16).
Preferably, in use the cover tray (20) is snugly housed within said support frame (12) and said outwardly extending projection (26a) comprises a flat/planar portion that substantially covers a void (V) defined by a frame sidewall portion (14a), said adjacent/associated cover sidewall portion (22a) and a portion of shelf member (18a) located there-between.
Preferably, the support frame (12) has four sidewall portions (22) and the aperture A is rectangular in shape.
Preferably, a pair of adjacent cover sidewalls (22) each have an outwardly extending projection (26) with apertures/keyholes (28) provided, in use, to allow engagement with a cover lifting tool (T), inserted between an adjacent/associated frame sidewall (14a, 14b) and cover sidewall (22a, 22b).
Preferably, said outwardly extending projection (26a) mainly comprises a flat/planar portion, the upper surface of which in normal use is substantially level with the top surface of said frame sidewalls (14) Preferably, said outwardly extending projection (26a) of the cover tray (20) has a securing aperture (30) configured to allow a securing member (50) to pass therethrough and engage a shelf member (18).
Preferably, said securing member comprises a threaded bolt (50) and said securing aperture (30) is sized to allow the bolt shaft but not the bolt head to pass therethrough.
Preferably, the ground surface access assembly (10) comprises a plurality of securing apertures (30) and securing members (50) located proximal internal corners of the support frame sidewalls (14).
Preferably, the ground surface access assembly (10) comprises a cover tray (20) that is pivotably mounted within said support frame (12) and has just one outwardly extending projection (26a) with an aperture/keyhole (28) provided, in use, to allow insertion of a lifting tool (T) between an adjacent/associated frame sidewall (14a) and cover sidewall (22a).
Preferably, the ground surface access assembly (10) comprises two apertures/keyholes (28) located proximal inside corners of said support frame sidewalls (14).
Preferably, the underside of said floor portion (24) has a plurality of integrally formed and downwardly extending reinforcement members (38) that extend below the level of said base flange and are tapered such that they have a maximum depth near the centre of the floor member and substantially zero depth near the underside edge of the floor portion (24).
The support frame (12) base flange may be circular and have a polygonal aperture (A) defining an inner edge upon which said at least three sidewall portions are located/integrally connected.
In another aspect the invention comprises a method of removing a cover tray of a ground surface access assembly from a support frame wherein the ground surface access assembly (10) comprises: a support frame (12), surrounding and defining an aperture (A); said support frame comprising at least three frame sidewall portions (14) located upon and adjoining a base flange (16); said support frame (12) further comprising one or more shelf members (18) that extend sideways and inwardly from at least two of said frame sidewalls (14), configured in use to support a cover tray (20) within said support frame (12); said cover tray comprising at least three cover sidewall portions (22) connected to and located upon and adjoining a floor portion (24); wherein at least one of said cover sidewalls (22) has a sideways and outwardly extending projection (26a) with an aperture/keyhole (28); comprising the following steps: (a) Inserting the head of a lifting key/tool (T), through said aperture/keyhole (28), within a void (V) formed/defined by an adjacent/associated frame sidewall (14a), cover sidewall (22a) and part of shelf member (18a); (b) adjusting the head of the lifting key/tool to abut the underside of said outwardly extending projection (26a) prior to lifting key/tool (T) and attached cover tray upwardly.
Preferably, said adjustment (step b) comprises: initially sideways movement and then inward movement, of the lifting key/tool (T); both relative to the cover tray (20).
The cover tray (20) may be lifted clear using up to four lifting keys; one engaging each of the four apertures/keyholes (28).
Brief Description of Drawings
The present invention is illustrated by the following diagrammatic figures in which: Figure 1 shows a perspective view of aground surface access assembly (in exploded form); Figure 2 shows a plan view of the ground surface access of Figure 1 in assembled form; Figure 3 shows an underside view/elevation of the ground surface access assembly of Figures 2; Figure 4 shows a side view/elevation of the ground surface access assembly frame of Figure 2; Figure 5 shows a side elevation of the ground surface access assembly of Figure 2 sectioned along the line X-X' of Figure 2; Figure 6 shows a side elevation of the ground surface access assembly of Figure 2 sectioned along the line Y-Y' of Figure 2; Figure 7 shows an enlarged (slightly simplified) sectioned view of a part of Figure 6; Figure 8 shows an underside view/elevation of the cover tray of ground surface access assembly of Figure 1; Figure 9 shows a plan view/elevation of the support frame of ground surface access assembly of Figure 1; Figure 10 shows a perspective view of the cover tray alone of ground surface access assembly of Figure 1; Figure 11 shows an enlarged perspective view of a corner portion of the cover tray alone of ground surface access assembly of Figure 1; Figure 12 shows a perspective view of the cover tray of the ground surface access assembly being pivoted open during removal using known lifting keys (K); Figure 13 shows a perspective cross section of a lifting key (K) located within void space (V) ready to lift the cover tray from its support frame; Figure 14 shows a perspective cross section of a cover tray securing bolt passing through an aperture in the cover tray and engaging the support frame; Figure 15 illustrates a preferred embodiment of the invention wherein the aperture/keyhole further comprises a rectangular portion, thus forming a generally "L-shaped" aperture; Figure 16 illustrates a variant of the invention where the support frame flange is of annular/circular shape; and Figure 17 illustrates a prior-art, and well known conventional lifting key (K).
Detailed Description
Figures 1 to 15 illustrate a ground surface access assembly according to a first aspect of the present invention.
The ground surface access assembly (10) of Figure 1 comprises a support frame (12), surrounding and defining an aperture (A); said support frame comprising four frame sidewall portions (14) located upon, and adjoining an integrally connected to, a base flange (16); said support frame (12) further comprising four internal shelf members (18) that extend sideways and inwardly from frame sidewalls (14), where the support frame (12) is configured in use to snugly house a cover tray (20) therein. The cover tray houses a plurality of rectangular-shaped paving blocks (not illustrated) and comprises four cover interconnected sidewall portions (22) integrally connected to, and supported by a floor portion (24). Two of the said cover sidewalls (22a, 22b) have a sideways and outwardly extending projection (26); each (26a, 26b) with a pair of apertures/keyholes (28) provided, in use, to allow engagement with a cover lifting tool/key (T), inserted between adjacent/associated frame sidewalls (14a, 14b) and cover sidewalls (22a, 22b).
The apertures/keyholes (28) are "horse-shoe" shaped (plan view) allowing the insertion, in particular, of a "L-shaped" lifting key formed by a shaft and key-head.
The cover tray (20) also has provision for securing the cover within the support frame using up to four bolts that pass-through recessed bolt apertures (30) in the outwardly extending projections (26) and engage internal shelf members (18), as described in more detail below.
While the base flange (16) and the internal shelf members (18) may be entirely separate sideways (externally and internally respectively) projections in the present case the underside of both provide a continuous planar surface, that in use may rest upon and be supported by an underground chamber (C).
Figure 2 shows a plan view of the the ground surface access assembly (10) of Figure 1 with the cover tray (20) snugly housed within the support frame (12) and before installing any retaining bolts (50). In this embodiment there are also two narrower internal shelf members (18c, 18d) that further support the cover tray (20) within the aperture (A) of the support frame (12). The gap (G) between the frame walls (22c, 22d) and the adjacent frame sidewalls (14c, 14d) is much less than for the other two sidewalls (22a,22b) as the narrower outwardly extending projections (26c, 26d) do not need any key apertures (28) or bolt apertures (30). The annular/rectangular flange (16) portion of the frame (12) has four frame corner reinforcement members (46) and also slots/apertures (34) that in use assist bedding of the flange (16) upon the supporting underground chamber (C).
Figure 3 shows an underside view the ground surface access assembly (10) of Figure 1 and in particular six cover tray floor (24) reinforcement members (38) described in more detail below.
Figure 4 shows a side view/elevation of the ground surface access assembly (10) of Figures 2 and 3, with the cover tray (20) located within its support frame (12), and also portions of four of the six cover tray floor (24) reinforcement members (38). Each reinforcement members (38) has a central deep portion (40) and a pair of adjoining tapered (in depth) portions (42) each of which extend outwardly towards the flange (16) such that they are of nominally zero depth proximal the four internal shelf members (18). The six reinforcement members (38) comprise two groups each group having three parallel members that extend in orthogonal directions. This arrangement advantageously provides maximum reinforcement and strength (against loads imposed by traffic etc.,) to the central portion of the cover tray floor (24); which in use is normally exposed to the greatest stress.
Alternatively, the cover tray floor (24) could be reinforced by a plurality of reinforcement members extending: radially from a centrally point located on the underside of the cover tray floor (24); or from centrally positioned circular-shaped or polynomial-shaped reinforcement member, located on the underside of the cover tray floor (24).
Figures 5 and 6 show cross-section elevations of the ground surface access assembly (10) of Figure 1 along the lines X-X' and Y-Y' of Figure 2, and in particular that gap (G) located between the cover tray sidewalls (22c, 22d) and the adjacent support frame sidewalls (14c, 14d) is much less than that of the other two sidewalls (22a,22b), (described in more detail below) that partly define the boundary of said void (V). They also show part of four reinforcement members (38). Each of the inner surfaces of the four cover tray sidewalls (22) have three indented zones (44) that in use facilitate bonding of paving members within the cover tray, as described in more detail below.
Figure 7 shows a partial and enlarged sectioned view (along part of the line Y-Y' of Figure 2) of the ground surface access assembly of Figure 2, and in particular that a void (V) is bounded by a support frame sidewall (14), an integrally connected support frame internal shelf member (18) and a removable cover tray sidewall (22). In this embodiment the internal shelf member (18) could be said also to be an inwardly extending portion of the support frame flange (16) as it also provides a support (upon a chamber C) duty. The internal shelf member (18) has a peripheral groove/indent configured to house (at least in part) a sealing gasket (36) upon which the underside of the cover tray floor (24) rests.
Figure 8 shows an underside view/elevation of the cover tray alone. It also shows outwardly extending projection (26a,26b) each having three underside reinforcement members (48), two of which are located adjacent apertures/keyholes (28).
Figure 9 shows a plan view/elevation of the support frame of ground surface access assembly.
Figure 10 shows a perspective view of the cover member alone and in particular one of four corner support columns (52) that in use further support the cover tray (20) within its support frame (12) housing.
Figure 11 shows an enlarged perspective view of part of a cover member alone and in particular an aperture/keyhole (28), recessed bolt aperture (30), a crowbar insert aperture (32), and corner support column (52). The crowbar insert aperture (32) allows a crowbar, when necessary, to be used to loosen the cover tray (20) (from the support frame 12), that may have become bonded to the frame through exposure to the elements etc., prior to removal using said lifting tools/keys (for chamber access).
Figure 12 shows a perspective view of the cover tray (20) of a ground surface access assembly according to the present invention being pivoted partly open, optionally using pivot means (not shown), during installation or removal, using a pair of lifting keys (K).
Figure 13 shows a perspective cross section of a lifting key (K) located within void space (V), ready to lift the cover tray from its support frame.
Figure 14 shows a perspective cross section of a cover tray securing bolt (50) passing through a recessed bolt aperture in the cover tray (20) and engaging a threaded aperture (56) located within the support frame internal shelf members (18).
Figure 15 illustrates a preferred embodiment of the invention wherein the aperture/keyholes (58) in the outwardly extending projection (26) further comprise a rectangular portion, compared with the earlier illustrated (see Figure 14) "horse-shoe" shaped aperture. Thus, this aperture/keyhole is approximately "L-shaped"; the rectangular extension being from a sidewall (and not the semi-circular portion) of the earlier described apertures/keyholes (28). This allows the key-head (H) of a UK standard lifting key (K) to be: firstly, lowered into the gap between said rectangular portion and the frame sidewall (not illustrated); secondly, moved sideways towards the cover tray corner; and thirdly, moved inwardly in a direction that is 900 to the cover sidewall portion (22a); before being lifted upwardly to abut against the underside of the outwardly extending projection (26). Preferably, lips (60) are provided to prevent unintended disengagement of the key during lifting, one of these (60) being visible in Figure 15. In all other respects this embodiment is as described above by reference to Figures 1-14.
Figure 16 illustrates a support frame (62) variant of the ground surface access assembly of the invention, where the support frame flange (64) is of annular-circular shape but in all other respects the assembly is substantially the same as illustrated in Figures 1 to 14., and Figure 17 illustrates a prior-art, and well known conventional lifting key (K) that conforms with UK BS7903:2020.
In the above description the "outwardly extending projections" (26) could alternatively be described as outwardly extending shelves.
The assembly (10) is typically fabricated from steel, although, less preferably, other metallic compositions may be employed.
In relation to the method of the present invention, following (or during) insertion of said paving blocks within said cover tray (20), they are typically bonded within the cover tray floor portion (24) and sidewalls (22) using cementitious bedding/bonding compositions that typically also fill/seal gaps between said paving blocks; bonding of peripheral blocks to said cover tray sidewalls (22), being enhanced by said indented zones (44). Alternatively, a noncementitious composition may be employed using Epoxy compositions, Ester-based materials or bituminous materials.
Claims (17)
- Claims 1. A ground surface access assembly (10) comprising: a support frame (12), surrounding and defining an aperture (A); said support frame comprising at least three frame sidewall portions (14) located upon, or integrally connected to, a base flange (16); said support frame (12) further comprising at least one shelf member (18) that extends sideways and inwardly from at least one frame sidewalls (14a), configured in use to support a cover tray (20) within said support frame (12); said cover tray comprising at least three cover sidewall portions (22) connected to and located upon a floor portion (24); wherein at least one of said cover sidewalls (22) has a sideways and outwardly extending projection (26a) with an aperture/keyhole (28) provided, in use, to allow insertion of a lifting tool (T) between an adjacent/associated frame sidewall (14a) and cover sidewall (22a).
- 2. A ground surface access assembly (10) according to Claim 1 wherein said aperture/keyhole (28) includes a rectangular portion, provided to allow insertion of a conventional lifting key (K); initially by downward movement, then sideways movement and then inward movement, all relative to the cover tray (20)
- 3. A ground surface access assembly (10) according to Claim 1 wherein said aperture/keyhole (28) is "L-Shaped" in plan-view, thereby allowing insertion of a conventional lifting key; initially by downward movement, then sideways movement and then inward movement, all relative to the cover tray (20)
- 4. A ground surface access assembly (10) according to any preceding claim wherein said inwardly extending shelf member(s) (18) comprise inwardly extending portions of said base flange (16).
- 5. A ground surface access assembly (10) according to any preceding claim where in use the cover tray (20) is snugly housed within said support frame (12) and said outwardly extending projection (26a) comprises a flat/planar portion that substantially covers a void (V) defined by a frame sidewall portion (14a), said adjacent/associated cover sidewall portion (22a) and the upper surface of portion of shelf member (18a) located there-between.
- 6. A ground surface access assembly (10) according to any preceding claim wherein the support frame (12) has four sidewall portions (22) and the aperture A is rectangular in shape.
- 7. A ground surface access assembly (10) according to Claim 6 wherein a pair of adjacent cover sidewalls (22) each have an outwardly extending projection (26a) with an aperture/keyhole (28) provided, in use, to allow engagement with a cover lifting tool (T), inserted between an adjacent/associated frame sidewall (14a, 14b) and cover sidewall (22a, 22b).
- 8. A ground surface access assembly (10) according to any preceding claim wherein said outwardly extending projection (26a) comprises a flat/planar portion, the upper surface of which is substantially level with the top surface of said frame sidewalls (14)
- 9. A ground surface access assembly (10) according to any preceding claim wherein said outwardly extending projection (26a) of the cover tray (20) has a securing aperture (30) configured to allow a securing member (50) to pass therethrough and engage one of said shelf members (18).
- 10. A ground surface access assembly (10) according to Claim 8 wherein said securing member comprises a threaded bolt (50) and said securing aperture (30) is sized to allow the bolt shaft but not the bolt head to pass therethrough.
- 11. A ground surface access assembly (10) according to any of Claims 5 to 9 comprising a plurality of securing apertures (30) and securing members (50) located proximal internal corners of the support frame sidewalls (14).
- 12. A ground surface access assembly (10) according to any preceding claim wherein said cover tray (20) is pivotably mounted within said support frame (12) and has just one outwardly extending projection (26a) with an aperture/keyhole (28) provided, in use, to allow insertion of a lifting tool (T) between an adjacent/associated frame sidewall (14a) and cover sidewall (22a).
- 13. A ground surface access assembly (10) according to any preceding claim wherein the underside of said floor portion (24) has a plurality of integrally formed and downwardly extending reinforcement members (38) that extend below the level of said base flange and are tapered such that they have a maximum depth near the centre of the floor member and substantially zero depth near the underside edge of the floor portion (24).
- 14. A ground surface access assembly (10) according to any preceding claim wherein said support frame (12) base flange (64) is circular and has a polygonal aperture (A) defining an inner edge upon which said at least three sidewall portions are located/integrally connected.
- 15. A method of removing the cover tray (20) of a ground surface access assembly (10) from a support frame (12) using apparatus according to any preceding claim.
- 16. A method of removing the cover tray of a ground surface access assembly from a support frame wherein the ground surface access assembly (10) comprises: a support frame (12), surrounding and defining an aperture (A); said support frame comprising at least three frame sidewall portions (14) located upon a base flange (16); said support frame (12) further comprising at least one shelf member (18) that extends sideways and inwardly from a frame sidewall (14), configured in use to house and support a cover tray (20) within said support frame (12); said cover tray comprising at least three cover sidewall portions (22) connected to and located upon a floor portion (24); wherein at least one of said cover sidewalls (22) has a sideways and outwardly extending projection (26a) with an aperture/keyhole (28); comprising the following steps: (a) Inserting the head of a lifting key/tool (T), through said aperture/keyhole (28), within a void (V) formed/defined by between an adjacent/associated frame sidewall (14a), cover sidewall (22a) and part of shelf member (18); (b) adjusting the head of the lifting key/tool to abut the underside of said outwardly extending projection (26a) prior to lifting key and attached cover tray upwardly.
- 17. A method according to Claim 16 wherein said adjustment (step b) further comprises: initially sideways movement and finally inward movement, of the lifting key/tool (T) head: all relative to the cover tray (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2204410.1A GB2617091A (en) | 2022-03-29 | 2022-03-29 | A ground surface access assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2204410.1A GB2617091A (en) | 2022-03-29 | 2022-03-29 | A ground surface access assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB202204410D0 GB202204410D0 (en) | 2022-05-11 |
| GB2617091A true GB2617091A (en) | 2023-10-04 |
Family
ID=81449585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2204410.1A Pending GB2617091A (en) | 2022-03-29 | 2022-03-29 | A ground surface access assembly |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2617091A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200163606Y1 (en) * | 1998-10-21 | 2000-02-15 | 주식회사장원주물 | The lid of a manhole |
| US8727659B1 (en) * | 2013-03-08 | 2014-05-20 | EJ USA, Inc. | Manhole cover with insert |
-
2022
- 2022-03-29 GB GB2204410.1A patent/GB2617091A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200163606Y1 (en) * | 1998-10-21 | 2000-02-15 | 주식회사장원주물 | The lid of a manhole |
| US8727659B1 (en) * | 2013-03-08 | 2014-05-20 | EJ USA, Inc. | Manhole cover with insert |
Also Published As
| Publication number | Publication date |
|---|---|
| GB202204410D0 (en) | 2022-05-11 |
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