baber/WOPTO huggingface dataset:
Patent GB-2609889-A (GB)
Title: Conduit Slab
Inventor: NICHOLAS KEMP
IPC: E01C9/00
Filed: 2021-06-16
Abstract: A conduit slab 1A comprising a conduit body 11A with a channel and a cover plate 2A which covers over the channel, such that the conduit body 11A and cover plate 2A may have co-planar upper surfaces. The conduit slab 1A may be suitable for use as a paving slab and may be made out of concrete reinforced with steel. The cover plate 2A may be secured in place using magnets 10A and/or with a fastener and may be permanently attached to the conduit body with a linkage. Also disclosed is a method of charging of an electric vehicle comprises laying a charging cable 20 in the channel of one or more conduit slabs 1A wherein the cover plates 2A cover the cable 20 in the channel and the conduit slabs 1A extend across a pavement to a kerb. The conduit slabs 1A may be retrospectively laid in a pavement.
Patent GB-2608414-A (GB)
Title: Mud-gas analysis for mature reservoirs
Inventor: TAO YANG
IPC: G01V99/00
Filed: 2021-06-30
Abstract: A method of generating a model for predicting at least one property of a fluid at a sample location within a hydrocarbon reservoir, the method comprising: simulating behaviour of one or more hydrocarbon reservoir during production; generating a plurality of simulated fluid samples from the one or more simulated hydrocarbon reservoir, the plurality of simulated fluid samples corresponding to a plurality of different spatial locations and/or different time locations within the one or more simulated hydrocarbon reservoir; generating a training data set 104 comprising input data 102 and target data based on the simulated fluid samples, the input data comprising simulated mud-gas data for each sample location indicative of mobile and immobile hydrocarbons at the sample location, and the target data comprising the at least one property of only the mobile hydrocarbons at each sample locations; and constructing a model using the training data set such that the model can be used to predict the at least one property of the fluid at a sample location based on measured mud-gas data for the sample location.
Patent GB-2611084-A (GB)
Title: A security system
Inventor: MICHAEL JOHN SUMNER
IPC: H04L9/32
Filed: 2021-09-27
Abstract: The invention has an HSM 110 which, as claimed, is air-gapped/offline. However, in Fig. 1 it is connected via input and output data diodes 122A/B and thus online. A user 150 creates an access control policy and sends it to the HSM, which assigns the policy an ID and signs it with an HSM key (Fig. 3). The signed policy is returned to the user and/or stored in the HSM. The user creates a vault object comprising the policy ID and other data. The vault object is hashed to create a digest/vault ID (Fig. 4). The user requests asset creation (typically a public/private key pair) by the HSM and includes an associated vault ID. The HSM creates the asset, signs and encrypts asset plus vault ID, and returns result to the user and/or stores it (Fig. 5). The user sends an asset usage request including encrypted asset, vault ID, and data required for access policy and asset usage. The HSM verifies the vault ID/digest, policy signature, policy requirements, etc. and if satisfied uses the asset as requested (Fig. 6). The asset may be used to sign blockchain 160 transactions.
Patent GB-2612800-A (GB)
Title: Retainer arranged to receive and retain an electronics module, method and system
Inventor: MICHAEL JOHN LYNCH
IPC: G01S3/48
Filed: 2021-11-11
Abstract: The retainer 1802 comprises a housing that defines an internal cavity for receiving the electronics module, a controller 2204 and a wireless communicator 2408. The wireless communicator 2408 receives direction finding information from the electronics module. The controller 2204 uses the direction finding information to determine a location of the electronics module. In some examples, the wireless communicator 204 comprises an RF switch 2416 and an array of antenna elements 2418, 2420, 2422, 2424. The RF switch 2416 switches between different ones of the antenna elements 2418, 2420, 2442, 2424 when receiving the direction finding information. The received direction finding information preferably including a reference power transmission value which is compared with the received transmission power value to determine the location of the electronics module.
Patent GB-2603038-A (GB)
Title: Visual quality assessment augmentation employing holographic interferometry
Inventor: ERIC V KLINE
IPC: G06T7/00
Filed: 2021-11-23
Abstract: A method, system and computer program product for performing visual quality assessment using holographic interferometry are described. A reference holographic pattern based on a reference object 602 and a test holographic pattern based on a test object 604 are obtained. An interference pattern 606 is created by superimposing the test holographic pattern onto the reference holographic pattern. A difference 608 between the reference and test objects is computed based upon the interference pattern. Binomial detection may be used. A score may be assigned to evaluate the presence of data in the interference pattern and this threshold may be used to determine whether further inspection is required. A neural network may be used.
Patent GB-2603614-A (GB)
Title: Apparatus and method for coating substrates with washcoats
Inventor: KUMARASEN MURUYANDY
IPC: F16K23/00
Filed: 2021-12-03
Abstract: Apparatus, method and valve assembly for coating substrates with washcoats. The valve assembly 4 comprises an outlet valve movable between a closed state and an open state. When the valve moves from its open state to its closed state, a pressure drop (e.g. negative pressure, backward suction force) is created within an interior of a washcoat showerhead 5. This can be used to reduce or prevent dripping or leakage of the showerhead 5. The apparatus and method include a substrate 10 being engaged with a headset 6 of a substrate coating apparatus 1 below the washcoat showerhead 5. Washcoat is discharged from the showerhead 5 onto an upper surface 12 of the substrate under control of a valve assembly 4 before being drawn through the substrate by use of a vacuum generator 7. The valve may include an enlarged valve stem head (63; figs. 2, 7) which is located downstream of the valve seat (24; figs. 2,7) in both the open state and the closed state, and which acts as a piston to create the pressure drop. The showerhead may include a baffle layer (103; fig. 4) directing fluid to the periphery of the interior of the showerhead.
Patent GB-2604518-A (GB)
Title: Structure and method to fabricate resistive memory with vertical pre-determined filament
Inventor: CHANRO PARK
IPC: H01L27/105
Filed: 2020-10-12
Abstract: A semiconductor structure including a vertical resistive memory cell and a fabrication method therefor. The method includes forming a sacrificial layer over a transistor drain contact; forming a first dielectric layer over the sacrificial layer; forming a cell contact hole through the first dielectric layer; forming an access contact hole through the first dielectric layer and exposing the sacrificial layer; removing the sacrificial layer thereby forming a cavity connecting a bottom opening of the cell contact hole and a bottom opening of the access contact hole; forming by atomic layer deposition in the cell contact hole a second dielectric layer including a seam; forming a bottom electrode within the cavity and in contact with the drain contact, the second dielectric layer, and the seam; and forming a top electrode over the first dielectric layer and in contact with the second dielectric layer and the seam.
Patent GB-2610297-A (GB)
Title: Federated learning method and apparatus, device and storage medium
Inventor: JI LIU
IPC: G06N20/00
Filed: 2022-07-12
Abstract: A method of federated learning in a federated learning system (server and terminal devices) wherein suitable target terminal devices corresponding to a task are being determined based on resource information of the devices. In particular: the method obtains resource information of the terminal devices of the system; determines target devices corresponding to the task based on the resource information; and trains a global model corresponding to the task until it meets a threshold. The threshold may concern a participation frequency threshold. The resource information may be input into a pre-trained reinforcement learning model, and the target terminal devices corresponding to the task may be obtained by the reinforcement learning model. In this way, the devices of the system are scheduled for the tasks in federated learning based on the resource information of the devices. This may reduce a total time for competing the tasks (i.e. the tasks may be done faster).
Patent GB-2606970-A (GB)
Title: Wind channelling and directing structures
Inventor: PIYUSH VASANTRAI JOSHI
IPC: F15D1/06
Filed: 2020-08-06
Abstract: A structure 1 for channelling and directing incident wind is described. The structure includes a hollow pipe 2 having a downstream end 2a that defines at least one outlet and an upstream end 2b. A rotatably mounted intake 4 is positioned at the upstream end 2b of the pipe 2 and is adapted to direct incident wind into the pipe. At least part of the pipe includes an internal helical flange or groove.
Patent GB-2613074-A (GB)
Title: Process for the cure of MI's and strokes through drug induced biophysical methods
Inventor: DEBASISH BANERJEE
IPC: A61K45/06
Filed: 2021-07-12
Abstract: This invention describes a biophysical method in which combination of drugs are used for the cure of MI's and ischemic strokes, even in cases of multiple site blockages. The method is more convenient in the sense it does not require the use of specialized personnel or equipment and the combination of drugs used is more effective and safer than the existing methods. It has had a 100% success rate in preventing fatalities. It reperfuses the myocardium or cerebral tissue very rapidly and reduces haemorrhage volume in haemorrhagic strokes.
Patent GB-2614509-A (GB)
Title: Parallax-tolerant panoramic image generation
Inventor: GIORGIO GALLINA
IPC: G06T17/00
Filed: 2021-11-24
Abstract: A method for generating a parallax-tolerant panoramic image includes obtaining a point cloud captured by a depth sensor, the point cloud representing a support structure bearing a set of objects; obtaining a set of images of the support structure and the set of objects, the set of images captured by an image sensor from a plurality of positions alongside a length of the support structure; generating a mesh structure using the point cloud, the mesh structure including a plurality of patches and representing a surface of the support structure and the set of objects; for each patch in the mesh structure, selecting an image from the set of images and projecting the selected image to the mesh patch; and generating an orthographic projection of the mesh structure onto a shelf plane of the support structure.
Patent GB-2615983-A (GB)
Title: Secure re-encryption of homomorphically encrypted data
Inventor: Nalini Ratha
IPC: H04L9/00
Filed: 2021-11-05
Abstract: Securely re-encrypting homomorphically encrypted data by receiving fully homomorphically encrypted (FHE) information from a client device, training a machine learning model using the FHE information, yielding FHE ciphertexts, applying a first transform to the FHE ciphertexts, yielding obfuscated FHE ciphertexts, sending the obfuscated FHE ciphertexts to a secure device, receiving a re-encrypted version of the obfuscated FHE ciphertexts from the secure device, applying a second transform to the re-encrypted version of the obfuscated FHE ciphertexts yielding de-obfuscated re-encrypted FHE ciphertexts, determining FHE ML model parameters according to the de-obfuscated re-encrypted ciphertexts, and sending the FHE ML model parameters to the client device.
Patent GR-980100321-A (GR)
Title: Plastic film production by peeling off the various layers of multi-layer films
Inventor: LEMPIDAKIS EMMANOUIL
IPC: B29D7/01
Filed: 1998-08-25
Abstract: The present invention refers to the production of a mono or multi-layer plastic film obtained by peeling it off from an initial multi-layer film that contains the finally required plastic films as one or more layers. The adhesion between the layers of the original multi-layer film (produced by the blown film or cast film co-extrusion method) is selected such that the required layers can be stripped off from the original film.
Patent GT-197135553-A (GT)
Title: Lixiviacion de minerales de silicato niquelifero mediante acido clorhidrico.
IPC: C22B26/22
Filed: 1971-01-03
Abstract: UN PROCEDIMIENTO PARA RECUPERAR NIQUEL Y MAGNESIO DE UN MATERIAL DE OXIDO EN PARTICULAR, QUE CONTIENE NIQUEL Y MAGNESIO LIXIVIANDOSE CON ACIDO CLORHIDRICO BAJO PRESION. EL MATERIALTIENE MENOS DE 20% DE HIERRO, LA SUSPENCION DE MATERIAL Y ELACIDO SE CALIENTA A 140 GRADOS CENTIGRADOS A PRESION A FIN DE PRODUCIR UNA SOLUCION ACIDA QUE CONTIENE NIQUEL Y MAGNE SIO, LA SOLUCION ES SEPARADA DEL MATERIAL LIXIVIADO Y LOS VALORES DEL NIQUEL DE LA SOLUCION SE RECUPERAN PARA QUE EN LA SOLUCION QUEDE PRESENTE SOLO EL MAGNESIO; ESTA SOLUCION SE HIDROLIZA OBTENIENDO ASI EL HIDROXIDO DE MAGNESIO Y......
Patent GT-198600140-A (GT)
Title: Procedimiento para la preparacion de antibioticos de beta- lactama.
IPC: A61K31/395
Filed: 1986-01-31
Abstract: SE REFIERE A UNA NUEVA FAMILIA DE ANTIBIOTICOS DE BETALACTAMA QUE TIENEN LA ESTRUCTURA QUIMICA,CONTENIDA EN LA FICHA TECNICA RESPECTIVA,ADEMAS DE LA BETALACTAMAS ANTERIORMENTE DESCRITAS QUE TIENEN UN SUBSTITUYENTE DE SAL DE ACIDO SULFONICO EN LA POSICION 1 Y UN SUBSTITUYENTE DE ACILAMINO EN LA POSICION 3 ESTA INVENCION INCLUYE TAMBIEN BETALACTAMAS QUE TIENEN UN SUBSTITUYENTE DE SAL DE ACIDO SULFONICO(QUE INCLUYE UNA SAL INTERNA) EN LA POSICION 1 Y UN SUBSTITUYENTE DE AMINO EN LA POSICION 3.
Patent GT-201800051-A (GT)
Title: Estufa electrolitica con mecanismo de seguridad
Inventor: DIEGO ALEJANDRO QUAN REYES
Filed: 2018-02-27
Abstract: LA PRESENTE INVENCIÓN REVELA UNA ESTUFA QUE PERMITE COCINAR CON ENERGÍA RENOVABLE Y NO PRODUCE CONTAMINANTES AMBIENTALES. LA ESTUFA ELECTROLÍTICA UTILIZA AGUA CON UN ELECTROLITO PARA PRODUCIR HIDRÓGENO COMO COMBUSTIBLE. LA ESTUFA CONTIENE UNA CELDA ELECTROLÍTICA (1) DONDE SE PRODUCE EL HIDRÓGENO Y OXÍGENO POR ELECTRÓLISIS, UN RESERVORIO (2) DONDE SE ALMACENA EL AGUA CON UN ELECTROLITO, UN BURBUJEADOR (3) UN ARRESTA-LLAMA (4), UN QUEMADOR (5), UNA FUENTE DE ENERGÍA (6), UN SISTEMA DE RECUPERACIÓN DE AGUA (7 Y 8), EN DONDE LOS ELEMENTOS DE SEGURIDAD SON EL BURBUJEADOR Y EL ARRESTA-LLAMA. ADEMÁS, LA PRESENTE INVENCIÓN PERMITE OBTENER AGUA DESTILADA QUE PUEDE SER REUTILIZADA EN EL SISTEMA O PUEDE FUNCIONAR COMO UN MÉTODO DE PURIFICACIÓN DE AGUA PARA BEBER.
Patent IN-2015DN00016-A (IN)
Inventor: RECK KASPER
IPC: G01L1/24
Filed: 2013-06-06
Abstract: The present invention relates to an all optical sensor utilizing effective index modulation of a waveguide and detection of a wavelength shift of reflected light and a force sensing system accommodating said optical sensor. One embodiment of the invention relates to a sensor system comprising at least one multimode light source one or more optical sensors comprising a multimode sensor optical waveguide accommodating a distributed Bragg reflector at least one transmitting optical waveguide for guiding light from said at least one light source to said one or more multimode sensor optical waveguides a detector for measuring light reflected from said Bragg reflector in said one or more multimode sensor optical waveguides and a data processor adapted for analyzing variations in the Bragg wavelength of at least one higher order mode of the reflected light.
Patent KR-830002269-A (KR)
Title: 전자시계
IPC: G04C21/16
Filed: 1980-01-21
Abstract: 내용 없음
Patent KR-830002333-A (KR)
IPC: G01N33/53
Filed: 1980-05-22
Abstract: A method is disclosed for detecting the presence of migration inhibitory factor (MIF) which comprises reacting a test solution containing an unknown amount of MIF antigen, a known amount of MIF antigen which has been radiolabeled, a known amount of antibodies to MIF, and thereafter precipitating and removing the resulting immune complex and measuring the radioactive content thereof, said antibodies to MIF being produced by immunization of animals with MIF antigen obtained from the growth of human lymphocytes under tissue culture conditions.
Patent KR-830004761-A (KR)
Title: 인쇄회로용 동박(銅箔) 및 그 제조방법
IPC: H05K3/38
Filed: 1980-10-25
Abstract: 내용 없음
Patent KR-830006948-A (KR)
Title: 챙모자의 제조방법
Filed: 1981-11-09
Abstract: 내용 없음
Patent KR-830007576-A (KR)
Title: 3-(1-메틸-5-니트로-2-이미다졸릴-2-아세틸-프로페논산)의 에틸에스테르의 제조방법
Filed: 1981-11-18
Abstract: 내용 없음
Patent KR-840000989-A (KR)
Title: 광전변환막의 제조방법
IPC: H01L31/0248
Filed: 1982-06-15
Abstract: 내용 없음
Patent KR-840000330-A (KR)
Title: 금속 연마봉 제조 방법
Filed: 1982-07-15
Abstract: 내용 없음
Patent KR-840004518-A (KR)
Title: 집진기
IPC: A47L9/10
Filed: 1983-05-24
Abstract: 내용 없음
Patent KR-840007269-A (KR)
IPC: F16K11/00
Filed: 1984-01-20
Abstract: @ A control valve includes a pulse motor 1, the threaded shank 4 of a ball screw 3 connected to the output shaft 2 of the motor, a slider 6 united with a nut 5 on the ball screw 3, and a valve stem 8 extending outward from a valve assembly 7 and connected to the slider 6. Two cases 9 and 10, each in the form of a vertical cylinder having a bottom, are fitted together in vertical alignment, and the pulse motor 1 is placed on the upper end of the upper case 9 to close the end opening thereof, with the output shaft 2 extending into the upper case 9. The slider 6 is housed in the lower case 10 and has its peripheral wall coupled to the inner surface of the lower case 10 so as to be slidable only vertically. The threaded shank 4 extends through and is rotatably supported by the bottom wall 22 of the upper case 9. The valve assembly 7 is fixed to the bottom wall 41 of the lower case 10.
Patent KR-850002919-A (KR)
Title: 디스크 재생장치용 서보메카니즘
Filed: 1984-08-31
Abstract: 내용 없음
Patent KR-860002966-A (KR)
Title: 커피술의 제조방법
Filed: 1984-10-10
Abstract: 내용 없음
Patent KR-850004432-A (KR)
Title: 연안 시추 플랫홈의 콘덕터 안내장치
IPC: E21B17/01
Filed: 1984-12-13
Abstract: 내용 없음
Patent KR-850004470-A (KR)
Title: 유기 화합물의 제조방법
IPC: A61P11/06
Filed: 1984-12-14
Abstract: 내용 없음
Patent KR-850004590-A (KR)
IPC: A61K31/395
Filed: 1984-12-28
Abstract: 1. Two new solid forms of 2-ethoxy-4-[N-(1-(2-piperidino- phenyl)-3-methyl-1-butyl)-aminocarbonylmethyl]-benzoic acid, the form designated (B) being characterised by the melting point of 140-142 degrees C and by the IR(KBr) spectrum according to Figure B' and the form designated (C) being characterised by a melting point of 75-85 degrees C and by the IR(KBr) spectrum according to Figure C'.
Patent KR-860006979-A (KR)
Title: 국부세척용 세제의 제조방법
Filed: 1985-03-04
Abstract: 내용 없음
Patent KR-850008718-A (KR)
Title: 전기식 수분 측정장치와 수분측정 및 표시방법
IPC: G01N27/00
Filed: 1985-03-28
Abstract: 내용 없음
Patent KR-870001118-A (KR)
Title: 유기성 폐수의 처리방법
IPC: C02F3/02
Filed: 1985-07-03
Abstract: 내용 없음.
Patent KR-860001611-A (KR)
Title: 안정하며 펌프 가능한 지올라이트 수현탁액의 제조방법 및 이 방법으로 제조된 현탁액
IPC: C11D3/12
Filed: 1985-08-10
Abstract: 내용 없음
Patent KR-870001941-A (KR)
Title: 전동인자기에 있어서 타이프 바아(Type bar) 작동 및 타자력(打字力) 자동제어 장치
Filed: 1985-08-16
Abstract: 내용 없음.
Patent KR-860003962-A (KR)
Title: 화상형성기의 용지 반전장치
IPC: B65H29/22
Filed: 1985-11-05
Abstract: 내용 없음
Patent KR-870004716-A (KR)
Title: 이동식 소프트볼 피칭마운드
IPC: A63B71/00
Filed: 1985-11-08
Abstract: 내용 없음
Patent KR-870000149-A (KR)
Title: 다통형 사출성형기(多筒型射出成形機)
IPC: B29C45/13
Filed: 1985-12-28
Abstract: 내용 없음
Patent KR-870003393-A (KR)
Title: 반도체 시험장치
IPC: G01R31/319
Filed: 1986-04-16
Abstract: 내용 없음
Patent KR-870006943-A (KR)
Title: 용접기용 도전재에 있어서의 수냉공의 성형방법
IPC: B22C9/10
Filed: 1986-05-12
Abstract: 내용 없음.
Patent KR-870006906-A (KR)
Title: 피부투과식 약물투여장치
IPC: A61M37/00
Filed: 1986-07-14
Abstract: 내용 없음.
Patent KR-870009158-A (KR)
Title: 유성기어 장치의 케이싱 부착구
IPC: F16H57/03
Filed: 1986-07-22
Abstract: 내용 없음
Patent KR-880003349-A (KR)
Title: 압출기 헤드(head)
Filed: 1986-08-19
Abstract: 내용 없음
Patent KR-870004871-A (KR)
Title: 밑바닥 개방식 갓트선(Gat船)용 선체구조
IPC: B63B35/30
Filed: 1986-11-07
Abstract: 내용 없음
Patent KR-870005947-A (KR)
IPC: C07C1/00
Filed: 1986-12-18
Abstract: A process for the preparation of (2,2)-paracyclophane or derivatives thereof by Hofmann elimination of p.-methylbenzyltrimethylammonium hydroxide or derivatives thereof, in an aqueous solution of an alkali metal hydroxide, wherein said elimination is carried out in the presence of a ketone of formula:
 CH3 - CO - CH2 - R      (I)
 wherein R is hydrogen, a halogen or an alkyl-carboxylic group.
Patent KR-870007832-A (KR)
Title: 판상부재의 적층(積層)장치
IPC: G01G11/00
Filed: 1987-02-17
Abstract: 내용 없음
Patent KR-870008748-A (KR)
Title: 모터구동식 동력조향 시스템
IPC: B60G17/08
Filed: 1987-03-21
Abstract: 내용 없음
Patent KR-890000402-A (KR)
Title: N-(2-메톡시아세틸)-n-(2,6-자일릴)-d,l-알라닌메틸 에스테르의 제조방법
IPC: C07C229/40
Filed: 1987-06-05
Abstract: 내용 없음
Patent KR-890001412-A (KR)
Title: 연쇄회로기판 제작시 발생되는 동의산화 재생방법
IPC: H05K3/00
Filed: 1987-06-16
Abstract: 내용 없음
Patent KR-880000255-A (KR)
Title: 공기들이 타이어
IPC: B60C15/06
Filed: 1987-06-25
Abstract: 내용 없음
Patent KR-890002143-A (KR)
Title: 12-아미노-피리다지노[4',5':3.4]피롤로-[2.1-a]-이소퀴놀린의 심장보호 및 신경보호제로서의 용도
Filed: 1987-07-01
Abstract: 내용 없음
Patent KR-880002182-A (KR)
Title: 불휘발성반도체기억장치
IPC: G11C16/30
Filed: 1987-07-09
Abstract: 내용 없음
Patent KR-890001483-A (KR)
Title: 휨 방지 삽입물을 내포하는 중간창을 지닌 구두
IPC: A43B13/20
Filed: 1987-07-10
Abstract: 내용 없음
Patent KR-880005444-A (KR)
Title: 유량연속 측정장치
IPC: G01F1/84
Filed: 1987-09-02
Abstract: 내용 없음
Patent KR-880008736-A (KR)
Title: 논농사 작업기의 경사검출 기구 및 이를 사용한 논농사 작업기
IPC: A01C11/02
Filed: 1987-10-29
Abstract: 내용 없음.
Patent KR-880008886-A (KR)
Title: 인자장치
IPC: B41J2/325
Filed: 1987-12-11
Abstract: 내용 없음.
Patent KR-880006977-A (KR)
IPC: A01D34/416
Filed: 1987-12-15
Abstract: The cutting head assembly of a motor-driven flexible line trimmer (10) has a line feed mechanism which includes a housing member connected to and driven by a drive shaft (28) from the prime mover and having a centrally located cylindrical wall (46) for receiving a compression spring (30). A locking plate and cup member (14) is reciprocably disposed around the cylindrical wall and compresses the spring substantially to its normal running position where it is held in position relative to the housing member by suitable retention structure. A spool (16) is disposed around the cup portion of the locking plate and cup member and unless restrained, is free to rotate relative to the housing member to pay out line through an aperture in the housing member. A cover ring member (18) has a central opening which is coupled to the housing member and holds a ground engaging button member (20) against the lower end of the cup member when both are in the lower, normal running position, yet permits the button member to reciprocate upwardly against the locking plate and cup member to compress the spring when the button member is bumped against the ground. The locking plate and cup member is driven by the housing member while being permitted to reciprocate axially, while the button member is driven by the cover ring member by way of the housing member while also permitting the button member to reciprocate axially. The spool is held against axial reciprocation by the cover member and the housing member in a manner permitting rotation of the spool relative to the housing. The upper and lower faces of the spool have radially extending ribs (84, 88) which cooperate with locking teeth (86) on the lower face of the locking plate and escapement teeth (90) on the upper edge of the button member to lock the spool against rotation when the locking plate and cup member are in the lower, normal running position, and to permit the spool to rotate through a controlled increment when the button is bumped against the ground and thus reciprocated, along with the locking plate member, upwardly then downwardly as a result of the biasing force of the spring.