baber/WOPTO huggingface dataset:
Patent FR-2796788-B1 (FR)
Inventor: REMERY PATRICK
IPC: G06F21/00
Filed: 1999-07-20
Granted: 2002-02-08
Abstract: Method for carrying out an electronic transaction using several signatures. In the present invention, entities (or actors) are spread over a communication network and share keys. A message is encapsulated inside several cryptograms, and intermediate entities progressively decapsulate the cryptograms that they receive. The invention is applicable to all electronic transactions, in particular to "electronic wallet" applications.
Patent HU-222891-B1 (HU)
Title: A tube or hose capable of withstanding extreme heat flux densities
Inventor: SJOETUN KYRRE
IPC: A62C31/00
Filed: 1998-08-28
Abstract: PCT No. PCT/SE98/01530 Sec. 371 Date Mar. 30, 1999 Sec. 102(e) Date Mar. 30, 1999 PCT Filed Aug. 28, 1998 PCT Pub. No. WO99/11962 PCT Pub. Date Mar. 11, 1999A pipe or hose (10) intended primarily for fire protection purposes and capable of withstanding high heat flux densities. The pipe or the hose has an internal, tubular rubber layer (11) and a casing (12) provided with holes which casing embraces the tubular rubber layer (11) in close contact therewith. The holes in the casing (12) are situated close together and have a limited cross-sectional area such that liquid transported in the pipe or hose (10) at a current liquid pressure above atmospheric pressure and through the medium of a nozzle effect in direct contact with the casing (12) and, subsequent to release from said casing contact, is able to form a free-standing liquid jet. When used in sprinkler systems or like fire extinguishing systems, the pipe or the hose will be imparted herewith self-sealing and self-protecting properties, and will withstand a heat flux density caused by a jet fire of up to about 500 kW/m2 while essentially maintaining liquid pressure and liquid flow in said pipe continuously during the extinguishing process.
Patent HU-222811-B1 (HU)
Inventor: JURAK FERENC DR
IPC: C07C69/58
Filed: 2001-01-08
Abstract: A találmány tárgya eljárás az (I) képletű S-(2E,4E)-11-metoxi-3,7,11-trimetil-dodekadiénsav-izopropil-észter (S-- methoprene) előállításáraa (II) képletű S-7-metoxi-citronellálból kiindulva, a (IV) általánosképletű R1 helyén hidro- génatomot tartalmazó S-(2E,4E)-11-metoxi-3,7,11-trimetil-dodekadiénsav észterezésével oly módon, hogy a (II)képletű S-7-metoxi-citronellált a (VI) képletű 2-metil-glutakonsav-metil-észterrel reagáltatják; a kapott (VII) általá- nos képletűvegyületből (mely képletben R jelentése metilcsoport) az R helyénhidrogénatomot tartalmazó (VII) álta- lános képletű optikailag aktívdikarbonsavat savanyítással felszabadítják; a (VII) általános képletű,R helyén hidro- génatomot tartalmazó (VII) általános képletűoptikailag aktív dikarbonsavat dekarboxilezik; a kapott, R1 helyénhid- rogénatomot tartalmazó (V) általános képletű optikailag aktívcisz-karbonsavat alifás szénhidrogénnel képezett ol- datábanizomerizálják; a kapott, R1 helyén hidrogénatomot tartalmazó (IV)általános képletű optikailag aktív transz-- karbonsav alifásszénhidrogénnel képezett oldatába ammóniát vezetnek, a reakcióelegyetásványi savval megsavanyítják, az R1 helyén hidrogénatomot tartalmazó(IV) általános képletű optikailag aktív transz-karbonsavat tartalmazóalifás szénhidrogénes fázist a szennyezéseket tartalmazó savas vizesfázistól ammóniumionok jelenlétében elválasztják; az alifásszénhidrogénes fázisba melegítés közben ammóniagázt vezetnek, azoldatot lehűtik, a kiváló R1 helyén ammóniumiont tartalmazó (IV)általános képletű optikailag aktív transz-karbonsav-ammóniumsótizolálják, savanyítással az R1 helyén hidrogénatomot tartalmazó (IV)általános képletű optikailag aktív transz-karbonsavvá alakítják, majdezt a vegyületet izopropilezik. A (I) képletű S-methoprene ismertrovarirtó szer. ŕ
Patent HU-222381-B1 (HU)
Inventor: BOWMAN PAUL T
IPC: C08G65/10
Filed: 1996-05-14
Abstract: A találmány szerinti eljárással a kettős fém-cianid (KFC) komplexkatalizátort úgy állítják elő, hogy egy fémsó vizes oldatát és egyfém-cianid-só vizes oldatát reagáltatják, ahol egyik, vagy mindkétreaktáns oldat tartalmaz egy komplexképző hatóanyagot, és ahol a fém-cianid-só-oldatot adják a fémsóoldathoz. A találmány szerintikatalizátorkészítmények poliéter-poliol előállításában alkalmazhatók,amely termékek jellemzője, hogy kevés telítetlen kötést tartalmaznak. ŕ
Patent HU-220450-B1 (HU)
Inventor: MECIKALSKI MARK B
IPC: A61M11/00
Filed: 1995-04-13
Abstract: A találmány szerinti inhalálókészüléknek alapteste (1), az alaptesten(1) belül egy tárcsa alakú, aeroszolképző kamrát (25) képezőhomlokfala (27), hátfala (11) és kerületi fala egy, az alaptestbe (1)forgathatóan szerelt szabadon pörgő munkakereke legalább egy, azaeroszolképző kamrába (25) nyíló beömlőnyílása egy, az alaptesten (1)átmenő és az aeroszolképző kamrába (25) nyíló töltőnyílása egy, azalaptest (1) homlokfalához (27) csatlakozó szájrésze (9), valamintegy, az aeroszolképző kamrából (25) a szájrészbe (9) nyílókiömlőnyílása van. ŕ
Patent HU-221746-B1 (HU)
Title: New oligomer-organosilane-polisulphanates and their uses in caoutchouc-compounds and for making form bodies
Inventor: DR BATZ-SOHN
IPC: C08G77/48
Filed: 1999-06-09
Abstract: Oligomeric organosilane polysulfanes are novel. An oligomeric organosilane polysulfane (I) contains structural units (A), (B) and/or (C) in any linear, branched or cyclic arrangement whereby at least (A) or (B) is present. Independent claims are included for: (i) a process for the production of (I) by reaction of a compound of formula (1), optionally in a solvent and/or in the presence of a catalyst at 0-150 degrees C with addition of water to cause self polymerization or under analogous reaction conditions by copolymerization with a compound of formula (2); (ii) a rubber mixture (II) containing organosilane polysulfane (I); (iii) a process for the production of the rubber mixture (II) by addition of (I) and a filler to rubber; and (iv) molded articles prepared from (II). Y-Sx-(CH2)nSiR<2>R<1>R (1) RR<1>R<2>R<3>Si (2) Y = H, CN, -(CH2)nSiRR<1>R<2>; n = 1-8; R-R<3> = H, 1-4C alkyl, 1-4C alkoxy, halogen or OSiR<1>R<2>R<3>; x = 1-8; z = 2-6; o, p, qq = 1-40; o+p+q = 2-40.
Patent IT-1280340-B1 (IT)
Title: Packaging frame - has L=shaped rib sections forming rectangular frame and reinforced at vertices
Inventor: BOSCO VANDIR
IPC: B65D/
Filed: 1989-11-02
Granted: 1998-01-15
Abstract: The packaging frame, comprises a pair of identical frame parts integrally moulded of semi-rigid thermoplastic material, each including a planar, open rectangular portion made of four elements integrally joined at four corners and each having an L-shaped transverse cross-sectional shape having two walls joined at a respective outer edge of the respective frame part. Each frame part further includes four extensions each having one end integrally joined to a respective rectangular portion at a respective corner so as to extend in a like direction perpendicular to the respective frame portion. The pair of frame parts are arranged in confronting relation so that the other ends of the other frame portion and respective said extensions having abutting ends thereby form extensions of one another. The extension has an L-shaped transverse cross-sectional shape having two walls joined at a respective outer edge of the respective extension. Each extension further has integrally formed where the two walls are joined at an inside vertex.
Patent JP-2857622-B1 (JP)
Title: 建築用ストッパー
IPC: E04G21/16
Filed: 1998-02-02
Granted: 1999-02-17
Abstract: 【要約】
  屋根などの傾斜した場所にも簡単かつ確実に建材を保 管したり仮保持したりすることができる建築用ストッパ ーを提供すること。
【解決手段】  略水平の基板部１ａの一端に上向きのス トッパー部１ｂを続かせた略Ｌ字状のストッパー部材１ の前記基板部上面にハンドル付きのねじ棒３を回動自在 に立設してこのねじ棒３に上下方向の挟持部材挿入孔５ が先端部に形成された連接部材４を該ねじ棒３の回動に より昇降動されるように螺合するとともに、前記挟持部 材挿入孔５には挟持片２ａが下端に屈曲形成されている 略Ｌ字状の挟持部材２をその縦杆部２ｂをもって上下摺 動自在に遊挿し、基板部１ａと挟持片２ａとの間に被挟 持物２０を介入させたうえハンドルねじ３を回動させる と、連接部材４の締め付けによって全体が被挟持物２０ に固定されて被挟持物２０の一側にストッパー部１ｂが 立設されるようにする。
Patent JP-2879040-B1 (JP)
Title: 穿孔装置、切断装置等のワークの搬入・搬出装置
IPC: B26D7/06
Filed: 1998-02-25
Granted: 1999-04-05
Abstract: 【要約】
【課題】  穿孔装置や切断装置等に隣設して外部に設置 してもスペースを占有せず、しかも穿孔装置や切断装置 と同期することも可能な構造簡単且つ低廉なワークの搬 入・搬出装置を提供する。
【解決手段】待機状態では引き込まれて可動アーム22は 支持体の真下に並列し、コンパクト。高さ調整機能、振 出機能で同穿孔装置や切断装置の搬入側に隣設して設置 してあるワークマガジン５からワークｘを受け取って同 装置の載置部にワークｘを受け渡したり、同載置部の加 工済ワークｘ’を受け取って搬出側に隣設して設置して あるワークマガジン５に搬出する。駆動源である正逆回 転動可能なモータを支持体に取付けて振出に際してモー タの重量が全く作用させない。
Patent NL-1041301-B1 (NL)
Title: Inrichting ten behoeve van verdamping van etherische oliën
Inventor: ILONE MARGARETHA MARIA OPHUIZEN
IPC: A61L9/12
Filed: 2015-05-12
Granted: 2017-01-19
Abstract: De onderhavige uitvinding betreft een inrichting ten behoeve van de beheersbare verdamping van etherische oliën en andere vloeistoffen waarbij gebruik wordt gemaakt van een vloeistofhouder met een uitstroombegrenzer en een vloeistof transport koord welk zich volledig buiten de vloeistofhouder bevindt. De uitstroom van vloeistof uit de vloeistofhouder zal zelfs bij het zonder dop omvallen van de vloeistofhouder nog beperkt zijn dankzij de uitstroombegrenzer.
Patent NL-1043049-B1 (NL)
Title: Flexibel vloersysteem
Inventor: ARIE BENJAMIN HARTMAN BBE
IPC: E04B5/12
Filed: 2018-10-22
Granted: 2020-06-02
Abstract: Oplegsysteem voor een vloer in een gebouw, omvattende houten vloerbalken (1) ter ondersteuning van de betreffende vloer (2), die met hun uiteinden worden ondersteund door zich dwars op de vloerbalken uitstrekkende houten hoogtestelliggers (3) die elk worden gevormd door een houten deel dat aan ten minste één van zijn brede zijden (4) is voorzien van ten minste twee zich in lengterichting uitstrek- kende hoogtestelgroeven (5), ingericht om samen te werken met een bij voorkeur hardhouten hoogtestelregel (6) die enerzijds naar verkiezing in een van de hoogtestelgroeven van de betreffende hoogtestelligger kan worden aangebracht en anderzijds in een horizontale sponninggroef (7) in een het gebouw verbonden vloerdraagconstructie (8)
Patent NL-1043234-B1 (NL)
Title: Method and device for the continuous removal of micropollutants from waste water
Inventor: MATEO MAYER
IPC: C02F9/14
Filed: 2019-04-16
Granted: 2020-10-26
Abstract: The present invention relates to a method and device for advanced oxidation of micropollutants, such as medicine traces, antibiotics and pesticides, from water, characterized by a device in which at least a continuous flow filter, a radical producing source, such as UV-C irradiation in the presence of hydrogen peroxide, and an ultrasound producing source are integrated. The continous flow filter removes turbidity from the water to be purified as welt as nutrients such as dissolved organic molecules and nitrate. The ultrasound keeps the quartz protection sleeves of the UV-C lamps clean by preventing the formation of inorganic and organic scaling caused by precipitation and co-precipitation of inorganic salts and organic molecules onto the quartz surface. At the same time, the ultrasound catalyzes disinfection and the decomposition rate of micropollutants. This synergistic effect of ultrasound on the advanced oxidation process is caused by disturbing the phospolipid structure of cell membranes of micro-organisms and by deciustering aggregates of particles passing the continuous flow compartment of the filter, thereby exposing micropollutants to radicals in the bulk of the water phase.
Patent NL-1043769-B1 (NL)
Title: Werkwijzen en systeem voor veilige foto
Inventor: ING PAUL VISSER
IPC: H04L9/32
Filed: 2020-08-27
Granted: 2022-04-29
Abstract: De onderhavige uitvinding betreft een veilige fotoopnamewerkwijze ten behoeve van verkrijgen van een veilige foto en/of verschaffen van een veilige foto aan een gebruiker van de foto zodanig dat de herkomst van de foto inzichtelijk is en het inzichtelijk is dat de foto integer en authentiek is, de werkwijze omvattende stappen voor het door een veilige bij voorkeur vooraf geregistreerde fotocomputer, bij voorkeur middels een op de fotocomputer functionerende fotoapplicatie of functionerend proces: - middels een verbindinginterface maken van een verbinding met een, bij voorkeur vooraf geregistreerde, camera, bij voorkeur daarbij controlerende of instellende instellingen van de camera, - instrueren van de camera tot het maken van een opname, - ontvangen van beeldopnamedata, zoals een beeldopnamedatastroom, van de opname vanaf de camera, - definiëren van tenminste een foto uit de beeldopnamedata, en vervolgens per foto: - genereren van een checksum van de foto, - onder toepassing van een versleutelingalgoritme versleutelen van de checksum en bij voorkeur van de foto verschaffende een respectieve versleutelde checksum en bij voorkeur versleutelde foto, zoals onder toepassing van een aan de fotocomputer, bij voorkeur aan de geauthoriseerde gebruiker gekoppelde versleutelingsleutel, - veilig verzenden van tenminste de versleutelde checksum en foto naar een veilige fotoserver of opslag ten behoeve van verkrijgen van toegang daartoe door de gebruiker van de foto.
Patent NL-2014828-B1 (NL)
Title: Method of performing a plurality of synthesis processes of preparing a radiopharmaceutical in series, a device and cassette for performing this method.
Inventor: VINCENT LUC ANTOINE TADINO
IPC: C07B59/00
Filed: 2015-05-20
Granted: 2017-01-31
Abstract: The invention relates to a method of performing a plurality of synthesis processes of preparing a radiopharmaceutical in series, which method comprises carrying out a first synthesis run comprising the steps of: a) providing water containing 18F; b) trapping the 18F from the water provided in step a) on an anion exchange material (18); c) eluting the trapped 18F from the anion exchange material ( 18) to a reaction vessel (58) of a first radiopharmaceutical synthesis cassette (50'); d) preparing a radiopharmaceutical incorporating the eluted 18F using the first radiopharmaceutical synthesis cassette (50'); wherein steps a)-d) are repeated in at least one subsequent run using another radiopharmaceutical synthesis cassette (50"; 50"'); and wherein the method comprises a reconditioning step of said anion exchange material (18) between two consecutive runs Other aspects of the invention relate to a device for performing this method, and a cassette for use in the device.
Patent NL-2017290-B1 (NL)
Title: Passivated Emitter and Rear Contact Solar Cell
Inventor: JOHN ANKER
IPC: H01L31/18
Filed: 2016-08-04
Granted: 2018-02-14
Abstract: Solar cell and method of manufacturing a solar cell. The solar cell has a silicon substrate (2) and a layer (4) disposed on a substrate side (2a) of the silicon substrate (2). It further has a contact structure (6) extending through the layer (4) from a cell side (1a) of the solar cell (1) to the silicon substrate (2). The layer (4) is composed of a polycrystalline silicon layer (8) and a tunnel oxide layer (10) interposed between the polycrystalline silicon layer (8) and the silicon substrate (2).
Patent NL-2019708-B1 (NL)
Title: Seeding Device for Seaweed
Inventor: CORNELIS JOANNES KERKVLIET
IPC: A01G33/00
Filed: 2017-10-12
Granted: 2018-05-04
Abstract: A seaweed seeding device for wrapping seaweed rope around a main rope comprises a frame; a friction wheel rotatably connected to the frame to receive the main rope around the wheel and rotate as the main rope is pulled through the device; a bobbin carrier rotatably connected to the frame around an axis of rotation; a seaweed exit guide connected to the bobbin carrier offset from the axis of rotation; and a transmission connecting the friction wheel to the bobbin carrier to translate rotational movement of the friction wheel to rotate the bobbin carrier.
Patent NL-2021252-B1 (NL)
Title: A trampoline safety pad, a semifinished product, a kit of parts, a method for assembling a trampoline safety pad, and a trampoline
Inventor: HENDRIK VAN DEN BERG
IPC: A63B6/02
Filed: 2018-07-04
Granted: 2020-01-15
Abstract: The present disclosure relates to a trampoline safety pad for covering trampoline parts at the periphery of a trampoline’s bounce mat. The trampoline safety pad comprises foam padding elements and a cover for covering the foam padding elements. The cover defines one or multiple cover compartments, each for housing one or multiple foam padding elements therein. At least one of the one or multiple cover compartments is provided with an inserting opening arranged to enable insertion of a foam padding element into said at least one of the one or multiple cover compartments.
Patent NL-2024146-B1 (NL)
Title: Precise placement of a sensor device on a rail track
Inventor: MAARTEN PIM VAN DER SCHRIECK
IPC: B61L1/16
Filed: 2019-11-01
Granted: 2021-07-19
Abstract: Disclosed are a sensor device for placement on a rail track and a method for placing said sensor device, the sensor device comprising one or more permanent magnets positioned such that the sensor device is mountable on the lateral side of the rail track by magnetic attraction; and a housing comprising a base side, a mounting side, and a top side opposite the base side, Wherein the mounting side comprises a first, a second and a third contact edge region configured to be in contact With the rail track, the second contact edge region is positioned outwardly from a first plane extending through both the first contact edge region and the third contact edge region, and the second contact edge region is positioned between a second plane extending parallel to the top side and through the first contact edge region and a third plane extending parallel to the second plane and through the third contact edge region.
Patent NL-2025627-B1 (NL)
Title: A virtual or augmented reality training system
Inventor: JOHANNES LUIJTEN
IPC: G09B19/24
Filed: 2020-05-20
Granted: 2021-12-07
Abstract: A virtual or augmented reality training system (1) com— prising a processor (2), a visual representation tool (3, 4), a user’s wearable (6), and a dummy object (7) which is engageable by the wearable (6), wherein the dummy object (7) corresponds to 5 a virtual object (8) which is to be manipulated and which is generated by the system (1), wherein the system (1) comprises a sensor or camera (9) connected to the processor (2) to detect a position and/or orientation of at least one of the dummy object (7) and the user’s wearable (6), wherein the system (l) is ar— 10 ranged to show with the visual representation tool (3, 4) a rep— resentation of the wearable (6) engaging the virtual object (8) to be manipulated, in a position and/or orientation correspond— ing to the position and/or orientation as detected by the sensor or camera (9).
Patent NL-2026221-B1 (NL)
Title: An improved multi-boat cooperative navigation method based on MEMS
Inventor: BO XU
IPC: G01C25/00
Filed: 2020-08-05
Granted: 2021-04-22
Abstract: The invention is a method for improving the positioning precision of unmanned ship cooperative navigation based on MEMS gyro, which is applied to the gyro error rapid 5 compensation of the micro—electromechanical system. The invention includes: establishment of forward filtering model, storage of forward filtering data, establishment of inverse filtering system model, establishment of inverse filtering measurement model and forward filtering using the established system model and measurement model. In this invention, the error of the MEMS gyroscope measuring the 10 heading is expanded into a state vector, so that the error can be compensated more effectively during the filtering process. Inverse filtering is simple and easy to implement in the collaborative navigation model. It only needs to change the sign of the speed v and use the data stored in the forward filtering in the reverse direction, including the position derived from the boat's navigation and the distance between the master and 15 slave. In addition, inverse filtering can repeatedly use a small piece of data that has been stored, without collecting more data, which significantly improves the speed of filter estimation and computer calculation. (Fig. 1)
Patent NL-2028106-B1 (NL)
Title: Werkwijze voor het conserveren van schelp- en schaaldieren
Inventor: AREND ANDRÉ SEINEN
IPC: A23L17/40
Filed: 2021-04-30
Granted: 2022-11-09
Abstract: Werkwijze voor het zonder conserveringsmiddelen conserveren van schelp- en schaaldieren in een verpakking, omvattende de navolgende stappen: verpakken van de 5 schelp- en schaaldieren in een verpakking onder een beschermende atmosfeer; sluiten/sealen van de verpakking; verwarmen van de gesloten/gesealde verpakking met de schelp- en schaaldieren.
Patent NL-2029359-B1 (NL)
Title: A bell for a bicycle, bell assembly comprising the bell and method for operating the bell
Inventor: YOURI VAN VILSTEREN
IPC: B62J6/22
Filed: 2021-10-08
Granted: 2023-04-20
Abstract: A bell for a bicycle, a bell assembly and a method for operating a bell, said bell comprising: - a housing; - a light source, preferably provided inside said housing, arranged for emitting light towards a user; - a wireless communication module, preferably provided inside said housing, arranged for wireless communication with a user device of said user; - a battery receiving space, preferably provided inside said housing, arranged for receiving a battery for powering said light source and said wireless communication module; wherein said wireless communication module is arranged for receiving an activation signal for activating said light source for emitting said light towards said user.
Patent RO-66208-B1 (RO)
Inventor: IONEL RADU
IPC: G01R11/00
Filed: 1976-03-19
Abstract: Contor electronic conform revendicarii 1, caracterizat prin aceea ca, în scopul alimentarii sale direct de la tensiunea înalta de linie, montaje partiale sunt alimentate în serie, iar tensiunea de alimentare este stabilizata cu o lampa de reducere (LR) si o dioda Zener (DS)
Patent RO-110449-B1 (RO)
Inventor: BADEA MADALINA ELENA
IPC: B65B11/28
Filed: 1995-06-27
Abstract: Invenția se referă la o mașină
semiautomată, destinată industriei farmaceutice, în
scopul ambalării, între benzi termosudabile, a unor
medicamente păstoase, semirigide, de tipul
supozitorelor. Mașina este alcătuită dintr-un platou
rotativ (1), antrenat, în mișcare de rotație
intermitentă, de un clichet (6) care este rotit de un
mecanism bielă-manivelă (12, 13) printr-o pârghie
oscilantă (14), care preia mișcarea de la un motoreductor
(19), printr-o rolă-tachet (15) și o camă
spațială (16). Platoul rotativ (1) alimentează
continuu, cu supozitoare, o mână mecanică (A), ce
preia câte un supozitor (5) și îl introduce între două
benzi termosudabile (30), înfășurate parțial pe
periferia unor tambure-matriță (20). Aceștia sunt
prevăzuți cu niște semilocașe (g) și niște striuri (h)
care presează benzile termosudabile (30), ce sunt
încălzite în zona de lucru, de niște blocuri
încălzitoare (23), montate în interiorul tamburelormatrijă
(20). Tamburele-matriță (20) sunt antrenate
în mișcarea de rotație, simultan, de niște roți
dințate (25 și 26), care primesc mișcarea de la
moto-reductorul (19). Moto-reductorul (19), prin
pârghia oscilantă (14), un braț oscilant (42), o
pârghie (41) și o sanie (37), asigură deplasarea
mâinii mecanice (A), într-un sens și în celălalt.
Patent RO-111715-B1 (RO)
Inventor: BUZILA DORU
IPC: F16K41/08
Filed: 1996-04-30
Abstract: Invenția se referă la un
robinet cu sertar paralel, utilizat în instalațiile
industriale pentru comanda vehiculării fluidelor.
Problema tehnică, pe care o rezolvă
invenția, este de a realiza un robinet cu
sertar paralel care să utilizeze presiunea
fluidului pentru realizarea etanșării în situația
închiderii robinetului. Robinetul conform invenției
este alcătuit dintr-un corp principal
(1), închis cu un capac superior (8), în
interiorul corpului principal (1), fiind montate
niște inele scaun (3) între care se poate
deplasa un sertar paralel [2] monobloc sau
din două bucăți cuplat cu o tijă de acționare
(6). Inelele scaun (3] sunt prevăzute cu niște
canale frontale (a], în care se montează niște
garnituri elastice (4) din grafit, iar corpul
principal (1) este prevăzut cu niște trepte
cilindrice (b) care ghidează inelele scaun (3),
sub acțiunea presiunii fluidului, realizând
comprimarea, sau destinderea garniturilor
elastice (4), în raport cu niște suprafețe
frontale (c) ale corpului principal (1).