DE7215462U - Cleaning shaft of a drainage pipe - Google Patents

Description

Cleaning shaft of a drainage pipe

The innovation concerns a cleaning shaft of a drainage pipe, on which a centering cover with its splash rests sealingly and the means Screw bolt is held in place.

In order to keep pipelines in good working order, it is necessary to provide cleaning shafts on the pipes at certain intervals. These cleaning shafts then form a unit with a piece of drainage pipe and it has been known to date to manufacture these parts from clay or cast iron. Same cast iron /; on the one hand they are very robust and on the other hand they have an extraordinary stiffness, ic de .... "I pimp a cover plate with a very good seal, before the surfaces lying on top of one another are ground and a thin sealing surface is placed between them However, these guileiserr.en pieces have the ••. • e "" - borne disadvantage, that they are once very difficult

Bank accounts: Deutsche Bank A. G. Ingolstadt, account no. 23/51310 Dresdner Bank Ingolstadt 1703SO0

—RastsEheckkpntQ Uünchen 225940

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and secondly, today's high metal prices come relatively expensive- After all, these pipes with the cleaning shafts are placed in the ground, like this that they are constantly exposed to corrosion. In particular, you can feel the one caused by the corrosion Wear on the screw brackets, where the screw bolts with the cover and the cleaning shaft rust together into a mostly inseparable unit. In addition, the sealing surfaces are attacked by the corrosion, so that the cover plate only sits insufficiently tight on the cleaning tray.

In order to largely eliminate these disadvantages, such pipes with cleaning shaft and cover are now available Clay produced - heavily fired clay has good rigidity, but has the disadvantage that it is very brittle so that the clay pipe breaks if there is excessive pressure or possible knocks. Last but not least, they are also Production costs of such clay pipes are relatively high, so that they have not prevailed »

In the meantime attempts have been made to construct such drainage pipes to create with cleaning shaft and cover made of plastic, but you could so far, as far as you have an inexpensive and Efficient manufacturing tried to achieve insufficient rigidity for the wall. This insufficient rigidity has been particularly noticeable in the cleaning shaft, on which the cover is supposed to sit tightly.

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If these parts are pressed off for testing with excess pressure the wall of the cleaning shaft and the tight fit against the cover widened each time was canceled with it.

The task of the innovation is to eliminate these disadvantages and to find a way in which the Wall of the shaft even with increased internal pressure in

their position remains to be a tight fit with the Ensure cover. In addition, the lid should from the cleaning shaft can be unscrewed and unscrewed without effort even after a long time and finally The aim is that the parts, despite their rigidity, have a certain elasticity in them so that they can get rough Withstand stresses on the construction site and in the installed state. Last but not least, it is also required that the parts are quite light and easy and inexpensive to create.

This object is achieved according to the innovation in that the cover flange and the upper edge of the cleaning device interlocking a. are trained. Here, both the flange of the cover can be specially designed, that the manhole edge reaches into it, or else the manhole edge can be provided with, for example, a U-shaped circumferential groove, into which the cover with a circumferential The web engages, it is essential here that the edge of the wall is of the cleaning shaft set on the cover

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is and can be supported on it, so that increased: Internal pressures do not affect the wall in the area of the cover

can push outwards »

? Another feature of the innovation is provided

ζ that the upper edge of the cleaning shaft is on the outside of

j: continuous or interrupted bars, pins, boron

I · 'th or similar bumps on the cover flange

■ . , protruding, is supported in a supporting manner. It is generally enough

{ '■ - my out to provide the raised portions on the flange i only in certain intervals as a support for the manhole

v * · ■ · ■ wall serves »Especially when fastening parts are attached to the

j. 'Schöchtwandung are foreseen, one will look at them

.. Make avoiding the bumps on the bonnet because I by the additions the Wondung already sufficient encryption has I stiffen "But if the lid should fit particularly tight ■ S because maybe gases through zubefördern {! are, one is the ridge of the flange was closed at i ■ --around ■ the wall of the filter shaft, so I '■ *' -.. to obtain a better labyrinth seal, in which optionally I, an additional sealing compound can be placed "'

Un sicner to go that even when using hard Material for cleaning -: - ch "ent the lid really ci ^ ht sits on the edge of the shaft, even if the R-.nd de; Schachten o ^ r-r the flanr-ch of the lid not be: cnder- edited: is, the innovation provides that ; -.-; i. the upper edge of the cleaning shaft and the

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D-- c "cc ~. Fl ön-sch a test seal, preferably one .•in':-·.;. ge lip seal is inserted. An angular one Li; -ρ?: - gasket fills the flat flange surface 3U5 ur.T- ".;: ct .ich additionally between deir. Wandungirand and Eier elevation of the lid elf 1 ~ s, se there 3 a.icnders "utv sealing is achieved»

In order to do justice to the promotion of obtaining an object that is as inexpensive and light as possible, the cleaning shaft, including the pipe and cover, is made of hard, unbreakable and liquid-impermeable. siqer art, toff created. This part can be created very easily using the injection molding process and does not require any rework. Both the wall _{edge of the R ir:} igung .:, shaft and the cover flange have rl rv: compartments, which seal against each other well

en. In kowtowing injection molding process it is evident dr- 'uch the surveys to the cover, which can be interrupted by H ^ n ^ nd CDOR cause any difficulties ODPR more accounts. Polygamy art

t ^ ff .-. rte is used in the creation, one leaves ■ ': ■ -: · Mer. ■ te. ". or, v. ^ i: different species with the same Γ ·. ii ^D r.; h ^ rt '-> r, / orh ^ nd and known .jind. On every FnIl <": ■ ranges rr,. r. due to the more agile use of material, the ";<\r:" nter. V / rs in the hardness, in the compressive strength and also in the elasticity «

According to a further advantageous embodiment, the innovation finally provides that on the outer wall of the cleaning shaft 3 metallic threaded nuts inserted for fastening the cover are screwed into the screw bolts, preferably made of plastic, which reach through the cover flange are. In the injection molding process it means no difficulty to insert threaded bushes, to achieve a precise screw connection. As a bolt you will with regard to the initially The risk of corrosion already outlined in the screw bolts Choose a self-lubricating material so that the screw connection is opened and closed again at all times can be. In addition, this choice ensures that no metallic parts are influenced by the environment that no part can rust. With the innovation you get a new component that none Is subject to wear and tear, which is itself very light and which can be removed and installed again at any time. In addition, e ~ possesses great rigidity and, on the other hand, a certain é; itizitat, _ ^ that also no destruction by crushing or smashing is to be feared,

Below is the innovation in the drawing, for example verin :; ~ haulicht and is based on the description explained in more detail *

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Show it:

F'.g. 1 the cleaning shaft on the drainage

tube and the cover in a perspective view and

2 shows the cover from below in an enlarged view

As can be seen from the drawing, this is drainage. - Pipe 1 is recessed in its wall and a cleaning shaft 2, which is connected in one piece with the pipe 1, extends from it. The shaft 2 is chosen to be rectangular and its wall has the same thickness up to the upper smooth rim 3. In the area of the four corners of the shaft 2, lugs 4 are provided on the outside, in which the threaded nuts 5 are fastened. The approaches 4 are flush with the upper edge 3 of the shaft 2 «

The cleaning shaft 2 is closed by a closure 6, which has approximately the same shape as the shaft opening. The cover 6 has three cross struts 7 on its surface to stiffen the cover surface. The press 6, which is even better from F'.g. 2 can be seen, shows the inner edge of the lid: S a circumferential. Zentrirrsteg ⁿ ^ uf that at? Ufgesetztem ceiling] 6 in the Reinigungsrehacht 2 eingrei ^c t. To this Zentrumier..ten ° i ..t on dom Dockelf lan ch E, a further web-like elevation IC is provided at a distance of approximately the wall thickness 11 of the cleaning shaft 2, which like

indicated, continuously cder rrit gaps 12 runs around ο Notches 13 are on each F? 11 irr. Area of the screw holes 16. This web-like elevation When the lid is on, IC grips over the edge 3 de. ^ Cleaning shaft 2 and supports it to the outside when there is an increased pressure in Rchr 1 or Irr shaft 2 harrr.chto To achieve a better seal., can between the centering web 9 and the outer web ^ rtigen Elevation 10 a profile seal 14 can be inserted, which compensates for possible unevenness «The cover δ is set on the cleaning shaft 2 with plastic screws 15, which are in the metallic nuts 5 e.rr Grab slot 2.

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Due to the deletion of the utility model 7 215 462, the utility model department II of the German Patent Office at the meeting on June 18, 1975 with the participation of

Government Director Buhring, the Upper Government Council Rubel and the Government Director Demmelmeiar

after an oral hearing decided:

The attacked utility model 7 215 462 erhSH; in the way of the mix · » delete the following version:

1 Hit a cleaning manhole and a drainage pipe made of plastic with a removable cover, in which a seal is arranged between the cover and the manhole edge and the cover is printed on the manhole edge by means of means attacking it at four points, preferably in the area of the corners, characterized that the manhole edge (3) cover (6) hat and spring formed mutually forming and the means for pressing the cover onto the manhole edge are screw bolts (15).

2. Drainage pipe according to claim 1, characterized in that

as an external support for the edge of the manhole (3) on the deck ©! (6) * Continuous or interrupted bars, pins, borders or similar Elevations (10) are arranged.

3 * drainage pipe according to claim 1 or 2, characterized in that the seal is a profile seal (14 ·), for the most part an angled lip seal is *

4. Drainage pipe according to one of Claims 1 to 3, characterized in that the screw bolts (15) are made of plastic and are screwed into a metal joint nut placed on the outside of the manhole wall *

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1/3 of the respondent bears the costs of the proceedings, 2/3 the applicant

Reasons :

Respondent is the owner of a drainage pipe registered on April 22, 1972 and registered on October 5, 1972 with installation shaft and cover concerning utility model 7 21? 462, whose Schutsdsusr has since been extended \ surde =

Dor registered protection claim 1 reads:

^R 1 _0; Cleaning shaft of a drainage pipe, on which a centering end cover rests sealingly with its flange and which is held in place by means of screw bolts, characterized in that the cover flange (8) and the upper edge (3) of the cleaning shaft (2) are mutually interlocking are,"

The further claims 2 to 3, which refer back to claim Λ, relate to expedient embodiments of the adjustment mechanism characterized in protective claim Λ.

Me applicant requests

to cancel the utility model and the costs of the procedure to impose on the defendant.

To justify your application, does you refer to the KP-PS ΜΦ? 695 * aiaf the DT-Gbm Λ 994 679 and on page 121 of a price list 10/70 for Eanalguß, October 1970 edition, the Buderus * see Eisenwerke Wetzlar. Furthermore, by presenting a hand pillow, she asserts the obvious prior use of an encapsulated housing from H.Viessmann EG in a heating system.

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The applicant is still at the hearing. <üe DT-PS 597 328 taken up.

The respondent initially contradicted the deletion request belatedly, the request for restitution made thereupon has been granted 4 © £ <X2h, so that the objection is deemed timely received applies: The defendant requests,

to reject the deletion request and order the applicant to pay the costs.

He holds the utility model with new eye protection claims 1 to 4-dated 22. Shark 1975 axifrecht. In the event of insufficient delimitation alternatively claims 1a to 4s: and extremely auxiliary Claims 1b to 3b because of the wording of the claims is based on referred to the deletion files.

The utility model department has determined this from anrts DT-Gbm 1 950 189 introduced and delimited the proceedings Claims 1 to 4 proposed.

For further details, please refer to the content of the pleadings referenced. In addition, reference is made to the interim decision of March 12, 1975.

The cancellation request based on §§ 1 Paragraph 2 and 7 Paragraph 1 GbmG is partially justified.

Compared to be manifestly vorbenutzt junction box asserted, the lid of which was submitted by the applicant at the hearing, there can be no distinction because as at her not vie in GebrauGasmastergegen · - was a cleaning slot with cover for drainage pipes, so to a sanitary article but about an object

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of the electrical industry ties "The" two objects © differ.®! - are not, ie the applicant thinks, in the loan ποτ by their designation, so that they are mutually interchangeable were, but above all in their grandparents and theirs specific training adapted to the respective purpose of the items. This switch box cannot be used in the * Basehr ©! - "Exercise," as the respondent thinks, should be taken into account, -hurry the description of the utility model is no longer changed after registration.

fenll ^ rlii hsfe sis ^ fc asserted that a cleaning shaft with all the features listed in protection claim 1 has become known through one of the publications mentioned by it or through the object claimed to have been clearly previously used. A review of this contrarySsattsmgan. by the utility sisters department, including the DT-Gbm Λ 950 189 mentioned by itself, has also led to the result that no τοη opposes the utility master item that is detrimental to novelty.

Since it is important in the case of a sample object that the one part - the shaft edge or the lid edge - in contrast to the switch box claimed by the applicant as clearly previously used, in the - contrary to the sketch submitted with the application for resolution - only the inner edge of the lid over the Can wall engages, is overlapped by the other part inside and outside, it is necessary to include as a corresponding feature / ^s characterizing part of the Sehntzanspruciis 1).

For it is to be recognized that the bow of the through £ as Ei? -Cbm 1 950 189 known pipe, of which in the preamble of the treasury claim 1 as that which comes closest to the prototype State of the art is assumed to be the edge of the manhole as well as

/ "the indication" hat and feather forming mutually interlocking ¹¹ in the

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cannot prevent the carrion from slipping sideways · On the narrow sides of the shaft, the brackets have no influence at all * and they have on the broad sides as the length of the shaft increases also practically no longer any influence, because they Sliding from the front side in any case onto the ec & areas of the manhole edge "are limited. Bern note dea application» opponent that between the side bracket parts and the hand of the For static reasons, the lid can always be air-sweetened, hiagegön not be followed, but this is irrelevant anyway because of the above-described corner position of the bracket.

The subject matter dss Solasfe ^ giisp? Aehs Λ according to the resolution is therefore new compared to the state of the art.

The question of which technical progress with the object against the åSend him on nachöfcsa kj ^ state of iD is "technology reached, the applicant did not comment on" The defendant has held that indicated by the in. Of patent claim 1 characterizing (Deil In the case of the cover and shaft wall of the cleaning shaft, which is under internal pressure, the wall avoids every point, both on the long and on the sides, which in the known device is due to the corner position This design of the cover shaft rim makes it possible for a cleaning shaft under internal pressure to be made of constant material, even with larger dimensions, which in turn simplifies production and extends the service life lower contact pressure of the lid a longer service life »These advantages are plausible, so the Geb rauchsmustörartikel a © enrichment of technology with itself

It remains to be checked whether the subject of the protection claim 1 the invention necessary for the existence of the utility model high.

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Like the registered documents as well as the presentation of the petitioner can be seen that a tight fit of the lid should be made of plastic when the reoni§pmgsschacht is under overpressure can be achieved. A comparable Tjozien overpressure occurs the electrical that was alleged to have been previously used Switch box not stuf. Also with this switch box, me stands out the utility master department on the basis of the information provided by the applicant the lid of this switch box that was presented, in contrast to the sketch submitted by her only the inner edge of the die Bichtarjgbbegrezizenden Sut in the lid on the inside over the can wall, thus a hatred that affects anything but de ·, * prevent the deflection of the can rim as a result of internal pressure indicates “too There is no external pressure from such a box in the Hegel to record. A clue, for example, a digging shaft in accordance with D2-Gbm 1 950 189 so that instead of of the cover used there, clamped by brackets on the shaft Manhole rim and cover in the characterizing ϊβϋ of the protection claim 1, hat and "spring interlocking" can be the switch box mentioned by the applicant therefore do not give.

The bridal DT patents 467 &) 5 and J? 97 828, & u which the applicant only mentioned in the oral hearing that they were mentioned to prove that the leakage was known, also relate to electrical switch boxes, so that apart from the fact that the wall is not held in any direction by the cover - the statements in the previous paragraph apply accordingly. As can be seen without further explanation, the shaft wall is not held in the shaft cover described in DT-Gbm 1 994 679 either.

The cast-iron ones shown in the Buderus price list The cover is cleaned with the interposition of a Seal pressed flat on the edge of the housing. Who is on the inside? -

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The running approach on the lid is used for centering. The apply here Explanations as for the electrical switch box discussed above, so analogously.

Since, therefore, the inventiveness required for a utility model in the subject matter of the claim! i is given, is the Reini " supply shaft according to claim "1 in the resolution underlying this decision Fit worthy of protection.

The referring back to claim 1. Claims 2 to 4, for which no independent protection is sought for the utility model, provide expedient embodiments of the mach Eeinigungsschachts Aoöprueb, 1 reproduction and have no technical self-evident to the content. They can therefore also be recorded »

Reference is made to the enclosed instructions on teaching materials.

The decision on costs follows from §§ 9 paragraph 5 page 2 GbmG, 92 ZPO

Bühring Denanelmeier rubles

system

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Claims (4)

20.4. iy72 K3-3 S / m Protect 3 crüche 1. Cleaning shaft of a cntwäs'ierungsrohres on which a centering cover with .-: a F ¹ QnSCh rests sealingly and which is held in place by means of screw bolts, characterized in that the cover flange (8) and the upper edge (3) of the cleaning shaft (2) are mutually interlocking = ~ 2ο cleaning shaft according to claim I _3, characterized in that the upper edge (3) of the cleaning shaft (2) sweet from continuous or interrupted webs, pins, bends or similar elevations (10), which on the cover flange (8) protruding, is supported overbearing » 3ο cleaning shaft according to claims 1 and 2, characterized in that that between the upper edge (3) of the cleaning shaft (2) and the cover flange (8) a profile seal (14), preferably an angled lip seal is inserted. /, 4. Cleaning.r shaft according to claims 1 to 3, characterized in that three of these (2) :: amt pipe (1) and Abs.hLu'1-dccke * - (6) ru :, hard, unbreakable and liquid u: .- dur ^r h ^! ä -., igen Kunrtatoff consists./ N ' 0 _ 2 - - 2 - Cleaning shaft according to claims 1 to 4, characterized in that metallic threaded nuts (5) for fastening the cover (6) are inserted on its outer turn, into which the. Lidflensch (8) gripping screw bolts (15),
plastic screws are preferred