For Shifting Belt Laterally Patents (Class 474/122)
  • Patent number: 10741767
    Abstract: In accordance with various embodiments of the disclosed subject matter, an organic thin film transistor, and a fabricating method thereof are provided. In some embodiments, the method for forming an organic thin film transistor (OTFT), comprising: forming a transparent gate layer on a transparent base substrate; forming a first initial silicone polymer layer on the transparent gate layer; and performing an oxidization process to partially oxidize the first initial silicone polymer layer to form a gate insulating layer, including an oxidized inorganic sub-layer that contacts the transparent gate layer, and a non-oxidized organic sub-layer.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: August 11, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD
    Inventor: Leilei Cheng
  • Publication number: 20140371013
    Abstract: A bicycle derailleur is provided that basically includes a base member, a movable member, a chain guide, a biasing element and a rotational resistance structure. The base member is configured to be mounted to a bicycle. The movable member is movably coupled to the base member. The chain guide is pivotally coupled to the movable member to rotate around a rotational axis with respect to the movable member. The biasing element biases the chain guide in a first rotational direction around the rotational axis with respect to the movable member. The rotational resistance structure is operatively arranged between the movable member and the chain guide to frictionally provide rotational resistance to the chain guide around the rotational axis in a second rotational direction. The rotational resistance structure applies the rotational resistance at an area disposed radially outward of the biasing element with respect to the rotational axis.
    Type: Application
    Filed: June 18, 2013
    Publication date: December 18, 2014
    Inventor: Sota YAMAGUCHI
  • Patent number: 8792812
    Abstract: An image forming device, comprising: an image formation unit; an endless belt; first, second and third rollers arranged in parallel such that the belt extends therebetween; a collar that is provided at least at one of ends in an axial direction of the first roller and moves in the axial direction when the belt moves obliquely; a press arm that presses an one axial end side of the second roller on which the collar is provided; and an oblique motion force conversion unit that includes a cam on which an slanting surface is formed and a movable part slidably contacting the slanting surface, and that converts a force for moving the collar into a pressing force for pressing the press arm, and wherein the slanting surface becomes closer to a rotation center of the first roller at a point further from the belt.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: July 29, 2014
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Michio Fujioka
  • Publication number: 20140141911
    Abstract: A unitary stretch belt installation and removal tool includes an installation component having a slot for positioning the tool on the rim of a pulley and a wedge shaped element to stretch arid guide a belt into a pulley groove as the pulley is rotated and further having an integral removal component including a slot and a shaped, generally convex belt guide surface for stretching and guiding a belt from a pulley as the pulley is rotated.
    Type: Application
    Filed: December 28, 2012
    Publication date: May 22, 2014
    Applicant: Lisle Corporation
    Inventor: Scotty R. Kurtz
  • Patent number: 8731447
    Abstract: Aligning image transfer assembly belts using two driven image-bearing belts simultaneously engaged with a driven transport belt. Each image-bearing belt conveys image-forming marking material formed thereon, wherein the transport belt is selectively engageable by the two image-bearing belts. The selective engagement of each image-bearing belt being independent from the other, wherein the two image-bearing belts are remote from one another. The method and apparatus also output signals representing at least one detected lateral positions of an edge of a measured belt using at least one edge sensor. The detected lateral position measured can be achieved by one or two edge sensors, wherein the two edge sensors would be disposed remote from one another along an extent across which the edge of the measured belt moves. Then a skew indication of the simultaneously engaged two image-bearing belts is determined based on a the output edge sensor(s) signals.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: May 20, 2014
    Assignee: Xerox Corporation
    Inventor: Martin Krucinski
  • Patent number: 8639131
    Abstract: A belt drive apparatus, including, an endless belt to be laid across in a tensioned condition between supporting rollers and to travel being in pressure contact with or being separated from a body to receive the pressure contact, a pressure contact/separating state detection section to detect whether the endless belt is in the pressure contact with the body or separated therefrom, a belt position detection section to detect a position of the endless belt in a width direction thereof, a belt abnormality judging section to judge whether the endless belt is in an abnormal position based on a detection result obtained by the belt position detection section and one of judgment values which are set correspondingly to the pressure contact/separating state of the endless belt, and a belt drive control section to control a drive of the endless belt.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: January 28, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Youbao Peng, Satoshi Ogata, Takashi Nara, Tadashi Matsudaira, Akihiro Hayashi, Eiji Nishikawa
  • Patent number: 8231489
    Abstract: A guide useful to install or remove a belt from a belt module is shown. This guide is made up of an elongated structure with a center aperture over which an endless belt is initially draped during installation. Once rotably attached to a belt module, the guide is moved downwardly to form a belt form over a top of the top drive rollers. A tube is attached to a bottom drive roller to help transfer the belt to the bottom drive roller and form the belt around the entire module. Once the belt is slidably positioned adjacent each drive roller, the belt is transferred from the guide and tube to the drive rollers for final installation.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: July 31, 2012
    Assignee: Xerox Corporation
    Inventors: Steven J Fiore, Brian J Perry
  • Patent number: 8216100
    Abstract: A guide useful to install or remove a belt from a belt module is shown. This guide is made up of two pivotable wings over which an endless belt is initially draped. Once pivotly attached to a belt module, the guide wings are moved away from each other to form a belt form over a top of the top drive rollers. A tube is attached to a bottom drive roller to help transfer the belt to the bottom drive roller. Once the belt is slidably positioned adjacent each drive roller, the belt is transferred from the guide and tube to the drive rollers for final installation.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: July 10, 2012
    Assignee: Xerox Corporation
    Inventors: Steven J Fiore, Brian J Perry
  • Publication number: 20120035011
    Abstract: An electro mechanical bicycle derailleur actuator system, retrofittable to a bicycle having gearing and at least one derailleur, the derailleur having a cable, the system comprising: at least one derailleur actuator module (DAM) connectable to the bicycle and to the cable; a cyclist interface module (CIM) connectable to the bicycle for cyclist interface with the system; and a control and power module (CPM) connectable to the bicycle serving to control and power the system, wherein the bicycle gearing is shiftable by the system without derailleur cable modification.
    Type: Application
    Filed: August 9, 2010
    Publication date: February 9, 2012
    Inventors: Haim MENACHEM, Guy PERETZ
  • Patent number: 8021254
    Abstract: A variable leakdown chain drive tensioner system includes a chain drive tensioner in operable communication with a chain. The chain drive tensioner includes a tensioner body with at least one leakage hole defining a first leakdown path and a tensioner piston assembly in operable engagement with the tensioner body. As the chain wears, the tensioner piston assembly is moveable from a first position, allowing flow through the first leakdown path, to at least a second position, substantially blocking flow through the first leakdown path. The tensioner body may also include a second leakage hole defining a second leakdown path and the tensioner piston may also have a third position. The first position would allow flow through the first and second leakdown paths, the second position would allow flow through only the second leakdown path, and the third position would substantially block flow through both the first and second leakdown paths.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: September 20, 2011
    Assignee: GM Global Technology Operations LLC
    Inventor: Clyde A. Bulloch
  • Publication number: 20100160099
    Abstract: A bicycle derailleur assembly that is mounted concentrically with an axle of a rear wheel assembly. The derailleur is constructed to be mounted to the bicycle such that the derailleur is pivotable about a common axis with the rear wheel and such that the rear wheel can be removed from the bicycle without interfering with the connection of the derailleur to the bicycle. The derailleur system provides a derailleur that is robust and reduces interference of the derailleur with the performance of bicycle maintenance.
    Type: Application
    Filed: March 8, 2010
    Publication date: June 24, 2010
    Inventors: James Colegrove, Dylan Howes, Jose Gonzalez
  • Patent number: 7703785
    Abstract: A bicycle derailer assembly that is mounted concentrically with an axle of a rear wheel assembly. The derailer is constructed to be mounted to the bicycle such that the derailer is pivotable about a common axis with the rear wheel and such that the rear wheel can be removed from the bicycle without interfering with the connection of the derailer to the bicycle. The derailer system provides a derailer that is robust and reduces interference of the derailer with the performance of bicycle maintenance.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: April 27, 2010
    Assignee: Trek Bicycle Corporation
    Inventors: James Colegrove, Dylan Howes, Jose Gonzalez
  • Patent number: 7695384
    Abstract: A belt device that is provided with an endless belt having a projection on an inner surface of the endless belt, the projection extending parallel to a running direction of the endless belt; and a support roller having a guide member that contacts the projection, the support roller supporting the endless belt so as to run the endless belt, wherein the guide member is separately provided from the support roller and nonrotatably supported between the support roller and the projection.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: April 13, 2010
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Yasushi Okabe
  • Publication number: 20090258738
    Abstract: A tension device for a drive chain of a bicycle including a first pulley having a first rotational axis swingable around a swing center, and a second pulley having a second rotational axis movable along a movable direction to change a distance between the first rotational axis and the second rotational axis. The first pulley is arranged to be forced around the swing center to apply tension to the drive chain, and the second pulley is arranged to be forced along the moving direction to apply tension to the drive chain.
    Type: Application
    Filed: April 11, 2008
    Publication date: October 15, 2009
    Applicant: Shimano Inc.
    Inventor: Nobukatsu HARA
  • Publication number: 20090239695
    Abstract: A guide useful to install or remove a belt from a belt module is shown. This guide is made up of two pivotable wings over which an endless belt is initially draped. Once pivotly attached to a belt module, the guide wings are moved away from each other to form a belt form over a top of the top drive rollers. A tube is attached to a bottom drive roller to help transfer the belt to the bottom drive roller. Once the belt is slidably positioned adjacent each drive roller, the belt is transferred from the guide and tube to the drive rollers for final installation.
    Type: Application
    Filed: March 19, 2008
    Publication date: September 24, 2009
    Applicant: XEROX CORPORATION
    Inventors: Steven J. Fiore, Brian J. Perry
  • Patent number: 7479077
    Abstract: A tensioner for imparting tension to a chain having a body, a resilient chain guide element, at least one blade spring, and at least one bracket. The body of the tensioner has a surface with a profile of the path of a new chain and a groove found longitudinally along the length of the surface. The resilient chain guide element, on the surface of the body has a chain contact surface and two ends wrapped around the ends of the body, with the chain guide being sufficiently larger than the body, such that the chain contact surface is capable of being biased away from the body. The blade spring is present in the groove with its end in the containments means of the groove, biasing the chain guide out and away from the body. At least one bracket is fixedly attached to the body and has a pivot.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: January 20, 2009
    Assignee: BorgWarner Inc.
    Inventors: George L. Markley, John T. Crockett, II, Timothy A. Turner, Mark M. Wigsten
  • Patent number: 7438658
    Abstract: A bicycle front derailleur includes a chain guide that is provided with a pushing element that is movable relative to the chain guide to assist in shifting a bicycle chain from a smaller front sprocket to an adjacent larger sprocket. The chain guide is part of a movable member that is movably coupled to a base member via a linkage assembly. The pushing element has a contact surface that preferably moves both laterally outwardly and longitudinally as the pushing element moves from a first position to a second position. Preferably, the pushing element is chain activated and arranged to move at least laterally outwardly by contacting a chain that is moving between inner and outer chain guide members of the movable member. Preferably, the pushing element is either a slidable member or a rotatable member.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: October 21, 2008
    Assignee: Shimano Inc.
    Inventors: Toshio Tetsuka, Etsuyoshi Watarai
  • Patent number: 7252610
    Abstract: In a belt drive system 20 for transmitting torque at a crankshaft 11 of an automotive engine 10 to a supercharger (engine accessory) 130a, an output pulley unit 40 formed of a first flat pulley 50 and a second flat pulley 60 is coupled to the rotational shaft 131a of the supercharger 130a. A flat belt 70 entrained between the output pulley unit 40 and the crank pulley 30 of the crankshaft 11 is shifted from the first flat pulley 50 to the second flat pulley 60 or vice versa by a speed ratio selector 80. The rotational shaft 131a can thereby be driven into rotation with the switching between a high speed ratio during acceleration and a low speed ratio during constant speed cruise. As a result, the supercharger 130a can bring out its capability into full play without using parts involving increases in weight, cost and power consumption, such as a solenoid-operated clutch, and concurrently suppress the deterioration of fuel economy.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: August 7, 2007
    Assignee: Bando Chemical Industries, Ltd.
    Inventor: Hirofumi Miyata
  • Patent number: 6912371
    Abstract: An image forming apparatus includes a roller having a central portion and an outer edge portion, a fusing belt positioned over at least a portion of the central portion of the roller, and a belt regulating part, positioned on the outer edge portion of the roller, that impedes the fusing belt from moving onto the outer edge portion of the roller. The belt regulating part includes a first portion having a surface adjacent to the central portion of the roller and an edge of the fusing belt. The first portion is configured to contact the fusing belt if the fusing belt moves toward the outer edge portion of the roller. The belt regulating part also includes a second portion coupled to the first portion, the second portion having an interior surface that contacts with the outer edge portion of the roller during operation of the image forming apparatus to cause the regulating part to rotate in conjunction with the rotation of the roller and the fusing belt.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: June 28, 2005
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventor: Yoji Sato
  • Publication number: 20040138018
    Abstract: A chain tensioner is provided, in which the design conditions of a register ring are optimized in compliance with the required functions so as to improve the durability, the operational stability and the like of the chain tensioner. A register ring is formed of a steel material having a tensile strength of 1000 to 3500 N/mm2. At the same time, an overlapping allowance of the register ring with respect to engagement grooves of a plunger is set within the range of 30 to 50% of a wire diameter of the register ring. Furthermore, a bending stress generated in the register ring when the register ring is made to slide between the engagement grooves to increase its diameter is set within the range of 500 to 1700 N/mm2.
    Type: Application
    Filed: October 16, 2003
    Publication date: July 15, 2004
    Inventors: Hisashi Hayakawa, Seiji Sato
  • Patent number: 6600507
    Abstract: A system and method for tracking belts disposed on rollers in a photoreceptor apparatus. The system includes a movable, belt edge guide that operates in combination with an encoder, a belt edge sensor, a belt hole sensor for detecting a hole in the belt surface, wherein the profile of the edge of the belt is learned as a function of the belt position on the rollers. The encoder and belt hole sensor are used to actuate the edge guide system to compensate for the contours of the belt edge and to maintain a constant lateral position of the belt at any given point on the belt.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: July 29, 2003
    Assignee: Xerox Corporation
    Inventors: Rene Sanchez, James P. Calamita, Daniel W. Costanza, Michael F. Leo
  • Patent number: 6567633
    Abstract: An improved intermediate belt system (ITM module) is provided, which controls the lateral motion of the belt in the scan direction of an EP printer, without the use of edge reinforcements or other attachments added to the belt. The tracking system of this ITM module is passive, and maintains roll alignment/parallelism within a predetermined tolerance while also maintaining roll conicity-end flare to a predetermined maximum diametral variation over the roll to minimize the effect of external forces on the belt walk rate. The ITM module also provides angled tracking guides near the tension roll to control the lateral position of the belt; the position of these tracking guides is adjustable at time of manufacture to achieve the desired lateral belt position.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: May 20, 2003
    Assignee: Lexmark International, Inc.
    Inventors: Robert Leonard Burdick, Mark Andrew Omelchenko, Stacy Marie Pargett, Harald Portig
  • Publication number: 20030017895
    Abstract: An improved belt tensioner for a refrigerant compressor mounted on a plate of a bus engine compartment, the compressor being operated by a power take off from the engine via a belt drive, the belt tensioner being flange mounted with a single plate attached to a single screw drive bolt, the plate being pushed against the compressor a predetermined and preset distance as determined by markers on a spring tension gauge mounted in between the single plate and the flange wherein the flange is fixed to the plate.
    Type: Application
    Filed: July 20, 2001
    Publication date: January 23, 2003
    Inventor: Donald Baker
  • Patent number: 6322470
    Abstract: An engine tensioning system including a pair of pivoting arms used to simultaneously tension two separate strands of the same chain in an engine timing system. The tensioner system includes a lever. The lever has a pair of fixed pins attached to an end located between the two strands of chain. The arms extend outside separate strands of the chain and carry shoes positioned to contact an outside portion of the chain are pivotally mounted to the fixed pins. Rotation of the lever causes the fixed pins to move laterally with respect to the chain strands and cause the arms to draw inwardly. The inward movement of the arms draw the shoes into contact with the chain strands and impart tension to the separate strands of the chain simultaneously.
    Type: Grant
    Filed: May 17, 2000
    Date of Patent: November 27, 2001
    Assignee: BorgWarner Inc.
    Inventors: George L. Markley, Mark M. Wigsten
  • Patent number: 6149541
    Abstract: A gas actuated derailleur for a bicycle includes a base member, a movable member supporting a chain guide, a coupling mechanism coupling the base member to the movable member so that the movable member moves relative to the base member, and an actuation mechanism responsive to compressed gas for causing the movable member to move relative to the base member.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: November 21, 2000
    Assignee: Shimano, Inc.
    Inventors: Yasushi Nakamura, Tadashi Ichida
  • Patent number: 6053832
    Abstract: A belt driving device in which an endless belt is spanned around a drive pulley and a driven pulley and the belt is driven by rotation of the drive pulley includes a belt shift correcting member for correcting shifting of the endless belt.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: April 25, 2000
    Assignee: Ricoh Company, Ltd.
    Inventor: Daisuke Saito
  • Patent number: 6022284
    Abstract: Apparatus for changing bicycle gear ratios comprising pedals (1) to the shaft (3) of which a group of coaxial overdrive gears is fixed, with at least an overdrive gear (20) of larger diameter and at least an overdrive gear (2) of smaller diameter; a plurality of sprockets (4) of different diameter, pack-like disposed close to each other and mounted on the shaft (40) of the rear wheel; a roller chain for the transmission of motion from one of the overdrive gears (2; 20) to one of the sprockets (4); a mechanism for shifting the chain (5) from one to another of said sprockets (4), with a cyclist-operated lever-and-wire driving mechanism; and a mechanism for guiding the deviation of the chain (5) from one to the other of the overdrive gears (2; 20) in cooperation with the mechanism for shifting the chain (5) over the sprockets (4) of the rear wheel. The teeth of each overdrive gear exhibiting, in correspondence of a respective sector (M, N), reduced height and thickness with respect to the other teeth.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: February 8, 2000
    Inventors: Attilio Bartolozzi, Andrea Bartolozzi
  • Patent number: 6007442
    Abstract: A gearshift mechanism has at least two sprocket wheels on a set of driving sprocket wheels or a set of driven sprocket wheels, having shifting aids to facilitate shifting a chain up and down, it being possible for the shifting to take place under load. The shifting aids include cone rivets, which project axially out of the sprocket wheel plane and are arranged beneath the toothing of the larger one of the at least two sprocket wheels. The at least two sprocket wheels have different numbers of teeth which are selected for having the highest common divisor possible, the purpose of which is to provide as many shifting aids as possible. The positions of the sprocket wheels with respect to one another in the circumferential direction and the position of the shifting aids with respect to the teeth of the larger one of the at least two sprocket wheels are also optimized to ensure a smooth transfer of the chain from one sprocket to another.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: December 28, 1999
    Assignee: SRAM Deutschland GmbH
    Inventor: Frank Schmidt
  • Patent number: 5957794
    Abstract: A continuously variable all speed transmission apparatus employs a conically-shaped driven surface which is frictionally contacted by a taut endless compliant transmission member that extends to a circular power source such as the pedal hub of a bicycle. The driven surface is centered upon an axis upon which an axle is disposed that causes rotation of a wheel such as a bicycle wheel. A shifting mechanism moves the contact site of the transmission member axially along the driven surface, thereby producing variation in the rotational speed of the wheel. The transmission member includes a central wire and a series of rollers disposed upon the wire in a manner to rotate about the wire without moving longitudinally thereupon.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: September 28, 1999
    Inventor: Phillip L. Kerr
  • Patent number: 5830046
    Abstract: An apparatus for continually shifting an endless abrasive belt trained between a drive pulley and an idler wheel. The belt is trained around an idler wheel which is supported by an arm above a continually pivoting platform transverse to the travel direction of travel of the endless belt. The platform is pivotally supported by a fulcrum mechanism at a pivot axis bisecting the platform, and a resilient member urges one side of the platform down while an inflatable and deflatable bladder continually urges the other side of the platform up and down. A tensioning means biases the arm supporting the idler wheel away from the drive pulley to maintain tension on the endless belt between the idler wheel and the drive wheel while the idler wheel is reciprocating. The bladder is continually inflated and deflated per a preselected time period to selectively vary the shifting cycle.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: November 3, 1998
    Assignee: Vulcan Engineering Co.
    Inventors: Ben Allen Dugger, Antoine Ibrahim Hallit
  • Patent number: 5199502
    Abstract: An edger having a driving device for operating a rotary blade, the driving device including a driving pulley; a pulley to be driven; a driving belt arranged between the two pulleys; a swing arm having the center of its swinging motion at a position different from the center of rotation of the driving pulley; a rod slidably supported by the swing arm and supporting the pulley to be driven; a spring for urging the rod in a direction in which the distance between the shafts of the two pulleys is elongated; a drive-side pulley cover and a driven-side pulley cover.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: April 6, 1993
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Makizo Hirata, Shigeharu Ohama, Michio Nishimura
  • Patent number: 4832186
    Abstract: A conveyor belt system having an improved pulley is disclosed in which the improved pulley includes a roller having grooves of varying width machined into the cylindrical surface of the roller to form raised guides or lands of equal width therebetween which spiral outward relative to the center of the roller with decreasing pitch. The contacting surface of the guides is operative to engage a conveyor belt or webbing passing over the pulley and the varying pitch of the guides allows for the quick centering of unaligned belts or webs. The roller may be machined to have more than one helical guide spiralling outward from the center of the cylindrical surface of the roller at one time. The guides may be squared, chamfered or rounded and may optionally contain serrations. The roller may additionally be machined to taper slightly from its center to the respective ends thereof.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: May 23, 1989
    Assignee: Dynapower Corporation
    Inventor: Rene A. Conrad
  • Patent number: 4748714
    Abstract: The invention comprehends a belt shifting arrangement for an upright cleaner in which belt shifting to an intermediate idler pulley is occasioned by either handle movement or pedal actuation. Either of these movements functions to cam the belt onto the idler pulley or to permit its movement back to an agitator drive pulley.
    Type: Grant
    Filed: November 6, 1986
    Date of Patent: June 7, 1988
    Assignee: The Hoover Company
    Inventor: Donald B. Tschudy
  • Patent number: 4446594
    Abstract: An upright type electric cleaner including a main body case (1) and a suction port body (1), wherein when the main body case is brought to an upright position as the machine is inoperative, a rotary brush extending downwardly from the bottom of the suction port body (1) is released from contact with the surface to be cleaned. The suction port body includes a single switching knob which, when manipulated, enables the speed of operation of the rotary brush and the distance between the rotary brush and the surface to be cleaned to be adjusted simultaneously. A part of exhaust air of the cleaner released through a blower is led through a sound absorbing duct located in a bag compartment into a cord reel chamber to thereby greatly reduce the noise level of exhaust and preventing cord overheating of a power cord of the cleaner.
    Type: Grant
    Filed: June 1, 1982
    Date of Patent: May 8, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Syuji Watanabe, Yoshitaro Ishii, Masao Sunagawa