Patents by Inventor Hiroshi Sasano
Hiroshi Sasano has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8651831Abstract: The present invention comprises a suspension spring and snubber arrangement for reducing transmitted noise from a reciprocating compressor at ?-octave frequency band of 500 Hz and preventing the occurrence of resonance frequency during the reciprocating compressor operation, the arrangement comprising: the suspension spring having a plurality of coils and two opposing open ends; at least one snubber for maintaining the integrity and shape of the suspension spring and for preventing displacement of the suspension spring from their intended position; wherein at least one open end of the suspension spring is loosely fitted over the at least one snubber; and further wherein an internal diameter of the suspension spring is larger than a outer diameter of the snubber so that a gap is defined between the suspension spring and the snubber for minimizing physical contact between the suspension spring and the snubber.Type: GrantFiled: June 9, 2005Date of Patent: February 18, 2014Assignee: Panasonic Refrigeration Devices Singapore Pte LtdInventors: Akio Yagi, Kar Hoe Chan, Hideki Kawai, Hiroshi Sasano, Chew Thong Khoo
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Publication number: 20090173348Abstract: An apparatus for inducing hypoxia in a subject is provided. The apparatus includes a breathing port, an inspiratory reservoir, means for introducing oxygen into the apparatus, means for controlling the flow rate of entry of oxygen into the apparatus at a rate below the subject's metabolic requirements, an expiratory reservoir having a vent, Sequential Gas Delivery means, and means for removing CO2 from the circuit.Type: ApplicationFiled: February 24, 2006Publication date: July 9, 2009Inventors: Joseph A. Fisher, Alex Vesely, Hiroshi Sasano, Steve Iscoe, Ronald Somogyi, Eitan Prisman
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Publication number: 20070095348Abstract: A particulate blocking oxygen delivery mask includes a face piece constructed at least partially of a filtering material, a securing member such as a strap attached to the face piece, and an gas entry port disposed on the face piece. The gas entry port may include an optional one-way valve. The mask may be coupled to a continuous flow of oxygen or may be used as a partial or non-rebreathing mask. The mask permits the administration of high concentrations of oxygen to the patient while at the same time isolating the patient from any potentially contagious airborne particles in their surroundings. It also isolates any potentially contagious droplets or aerosolized particulate matter exhaled by a patient from entering the environment and potentially infecting others.Type: ApplicationFiled: July 31, 2006Publication date: May 3, 2007Inventors: Joseph Fisher, Hiroshi Sasano, Nobuko Sasano, Takafumi Azami
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Patent number: 7100606Abstract: A method to maintain isocapnia for a subject. A fresh gas is provided to the subject when the subject breathes at a rate less than or equal to the fresh gas flowing to the subject. The fresh gas flow equal to a baseline minute ventilation minus a dead space gas ventilation of the subject contains a physiological insignificant amount of CO2. An additional reserve gas is provided to the subject when the subject breathes at a rate more than the fresh gas flowing to the subject. The reserve gas has a partial pressure of carbon dioxide equal to an arterial partial pressure of carbon dioxide of the subject. A breathing circuit is applied to the method to maintain isocapnia for a subject. The breathing circuit has an exit port, a non-rebreathing valve, a source of fresh gas, a fresh gas reservoir and a reserve gas supply.Type: GrantFiled: May 4, 2004Date of Patent: September 5, 2006Inventors: Joseph Fisher, Alex Vesely, Hiroshi Sasano, Steve Iscoe, Ronald Somogyi
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Publication number: 20060024175Abstract: The present invention comprises a suspension spring and snubber arrangement for reducing transmitted noise from a reciprocating compressor at ?-octave frequency band of 500 Hz and preventing the occurrence of resonance frequency during the reciprocating compressor operation, the arrangement comprising: the suspension spring having a plurality of coils and two opposing open ends; at least one snubber for maintaining the integrity and shape of the suspension spring and for preventing displacement of the suspension spring from their intended position; wherein at least one open end of the suspension spring is loosely fitted over the at least one snubber; and further wherein an internal diameter of the suspension spring is larger than a outer diameter of the snubber so that a gap is defined between the suspension spring and the snubber for minimizing physical contact between the suspension spring and the snubber.Type: ApplicationFiled: June 9, 2005Publication date: February 2, 2006Inventors: Akio Yagi, Kar Chan, Hideki Kawai, Hiroshi Sasano, Chew Khoo
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Publication number: 20040206354Abstract: A method to maintain isocapnia for a subject. A fresh gas is provided to the subject when the subject breathes at a rate less than or equal to the fresh gas flowing to the subject. The fresh gas flow equal to a baseline minute ventilation minus a dead space gas ventilation of the subject contains a physiological insignificant amount of CO2. An additional reserve gas is provided to the subject when the subject breathes at a rate more than the fresh gas flowing to the subject. The reserve gas has a partial pressure of carbon dioxide equal to an arterial partial pressure of carbon dioxide of the subject. A breathing circuit is applied to the method to maintain isocapnia for a subject. The breathing circuit has an exit port, a non-rebreathing valve, a source of fresh gas, a fresh gas reservoir and a reserve gas supply.Type: ApplicationFiled: May 4, 2004Publication date: October 21, 2004Inventors: Joseph Fisher, Alex Vesely, Hiroshi Sasano, Steve Iscoe, Ronald Somogyi
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Patent number: 6799570Abstract: A method to maintain isocapnia for a subject. A fresh gas is provided to the subject when the subject breathes at a rate less than or equal to the fresh gas flowing to the subject. The fresh gas flow equal to a baseline minute ventilation minus a dead space gas ventilation of the subject contains a physiological insignificant amount of CO2. An additional reserve gas is provided to the subject when the subject breathes at a rate more than the fresh gas flowing to the subject. The reserve gas has a partial pressure of carbon dioxide equal to an arterial partial pressure of carbon dioxide of the subject. A breathing circuit is applied to the method to maintain isocapnia for a subject. The breathing circuit has an exit port, a non-rebreathing valve, a source of fresh gas, a fresh gas reservoir and a reserve gas supply.Type: GrantFiled: April 30, 2002Date of Patent: October 5, 2004Inventors: Joseph Fisher, Alex Vesely, Hiroshi Sasano, Steve Iscoe, Ronald Somogyi
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Publication number: 20040084048Abstract: A method and device for effective delivery of a gas such as oxygen for inhalation are described that sequentially dilute room air to the flow of gas during a respiratory cycle. A mask assembly is described that comprises an inspiratory and expiratory limb each containing a very low resistance one-way valve, and a sequential dilution conduit (leading from the atmosphere to the inspiratory limb) with a one-way valve that has a slightly positive cracking pressure. A sequential dilution valve may also be placed in the sequential dilution conduit.Type: ApplicationFiled: May 12, 2003Publication date: May 6, 2004Inventors: Alex Stenzler, Tim Quinn, Edmond Chu, Hiroshi Sasano, Ron B. Somogyi, George A. Volgyesi, Steve D. Iscoe, David Preiss, Eltan Prisman, Alex Vesely, Joseph A. Fisher
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Publication number: 20040060560Abstract: A method and device for effective delivery of a gas such as oxygen for inhalation is provided by sequentially diluting room air to the flow of gas during a respiratory cycle. A mask assembly is described that comprises an inspiratory and expiratory limb each containing a very low resistance one-way valve, and a sequential dilution conduit (leading from the atmosphere to the inspiratory limb) with a one-way valve that has a slightly positive cracking pressure. A gas reservoir is also attached to the inspiratory limb. During expiration, the reservoir is filled with oxygen, for example, flowing from the oxygen source. During inspiration, oxygen from the oxygen source and the reservoir are drawn preferentially. If the oxygen flow is equal to or greater than the minute ventilation of the subject, no atmospheric air is entrained into the mask assembly and the subject gets pure oxygen. If the minute ventilation (tidal volume) exceeds the oxygen flow, the reservoir is depleted.Type: ApplicationFiled: September 27, 2002Publication date: April 1, 2004Applicant: SENSORMEDICS CORPORATIONInventors: Alex Stenzler, Joseph A. Fisher, Alex Vesely, Hiroshi Sasano, Ron B. Somogyi, George Volgyesi, Steve Iscoe, David Preiss, Eitan Prisman
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Patent number: 6622725Abstract: A method of controlling PCO2 in a patient at a predetermined desired level(s) comprising a breathing circuit which is capable of organizing exhaled gas so as to be preferentially inhaled during re-breathing when necessary by providing alveolar gas for re-breathing in preference to dead space gas.Type: GrantFiled: October 2, 2000Date of Patent: September 23, 2003Inventors: Joseph A. Fisher, Alex Vesely, Hiroshi Sasano, George Volgyesi, Janet Tesler
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Patent number: 6612308Abstract: A portable isocapnia circuit and an isocapnia method. A breathing port of the circuit allows a subject to inhale and exhale. Connected to the breathing port, a bifurcate conduit has a first conduit branch and a second conduit branch. The first conduit branch has an atmospheric air inlet, from which the atmospheric air is provided for inhalation, an inspiratory check valve to allow a one-way flow of the atmospheric air, and an atmospheric air aspirator. The second conduit branch has a one-way expiratory check valve and a expiratory gas reservoir. A one-way check valve is used to interconnect the first and second conduit branch, from which the expiratory gas stored in the expiratory gas reservoir flows to the first conduit branch to mix with the atmospheric air when the minute ventilation exceeds the atmospheric air.Type: GrantFiled: March 8, 2002Date of Patent: September 2, 2003Inventors: Joseph Fisher, Alex Vesely, Hiroshi Sasano, Steve Iscoe, Alex Stenzler
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Patent number: 6607369Abstract: A closed motor-driven compressor includes a closed vessel containing a lubricating oil collected in a bottom portion thereof, a compression section accommodated in the closed vessel, and a motor section accommodated in the closed vessel for driving the compression section. The compression section includes a crankshaft driven by the motor section and having a lower end submerged in the lubricating oil, and a block for rotatably supporting the crankshaft. The block has a cylinder formed therewith and having an open end. The block also has a rib formed therewith, a generally flat shoulder portion formed on one side of the cylinder, and a leg formed below the generally flat shoulder portion. The compression section also includes a cylinder head secured to the rib for covering the open end of the cylinder.Type: GrantFiled: March 8, 2002Date of Patent: August 19, 2003Assignee: Matsushita Refrigeration CompanyInventors: Seigo Yanase, Hiroshi Sasano, Junichiro Yabiki, Takahide Nagao
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Publication number: 20030000525Abstract: A portable isocapnia circuit and an isocapnia method. A breathing port of the circuit allows a subject to inhale and exhale. Connected to the breathing port, a bifurcate conduit has a first conduit branch and a second conduit branch. The first conduit branch has an atmospheric air inlet, from which the atmospheric air is provided for inhalation, an inspiratory check valve to allow a one-way flow of the atmospheric air, and an atmospheric air aspirator. The second conduit branch has a one-way expiratory check valve and a expiratory gas reservoir. A one-way check valve is used to interconnect the first and second conduit branch, from which the expiratory gas stored in the expiratory gas reservoir flows to the first conduit branch to mix with the atmospheric air when the minute ventilation exceeds the atmospheric air.Type: ApplicationFiled: March 8, 2002Publication date: January 2, 2003Inventors: Joseph Fisher, Alex Vesely, Hiroshi Sasano, Steve Iscoe, Alex Stenzler
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Publication number: 20020185129Abstract: A method to maintain isocapnia for a subject. A fresh gas is provided to the subject when the subject breathes at a rate less than or equal to the fresh gas flowing to the subject. The fresh gas flow equal to a baseline minute ventilation minus a dead space gas ventilation of the subject contains a physiological insignificant amount of CO2. An additional reserve gas is provided to the subject when the subject breathes at a rate more than the fresh gas flowing to the subject. The reserve gas has a partial pressure of carbon dioxide equal to an arterial partial pressure of carbon dioxide of the subject. A breathing circuit is applied to the method to maintain isocapnia for a subject. The breathing circuit has an exit port, a non-rebreathing valve, a source of fresh gas, a fresh gas reservoir and a reserve gas supply.Type: ApplicationFiled: April 30, 2002Publication date: December 12, 2002Inventors: Joseph Fisher, Alex Vesely, Hiroshi Sasano, Steve Iscoe, Ronald Somogyi
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Patent number: 6155067Abstract: A hermetic compressor of the present invention is provided with one or more small holes 17 formed in the shell of the suction muffler 16 formed with a low thermal conductivity material such as synthetic resin. The small holes 17 are positioned at nodes 18 in a vibration mode for the resonance frequency of the space formed in the hermetic shell, so that amplification of the resonance sound of the space in the hermetic shell 1 is suppressed. Furthermore, a shortage of the refrigerant is supplemented by the refrigerant gas sucked from the hermetic shell 1 through the small holes 17 when it occurs due to a suction loss caused by the resistance of the flow path for guiding a high density refrigerant gas from the suction tube into the cylinder 8 according to the circulation of the refrigerant.Type: GrantFiled: October 12, 1999Date of Patent: December 5, 2000Assignee: Matsushita Refrigeration CompanyInventors: Takeshi Ono, Yoshito Kataoka, Yasushi Hayashi, Hiroshi Sasano
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Patent number: 5558508Abstract: An elongated recess is provided on one side of a valve plate, and a piston is provided on the other side of the valve plate. Discharge holes are provided through the valve plate at the recess, and a pair of discharge reeds are disposed within the recess to close/open the discharge holes. A spring reed presses against the discharge reeds on sides thereof opposite to the discharge holes to close the discharge holes. A stopper is secured to the valve plate and fixes the spring reed into position. The operation of the discharge reed can be tested by the operation of the discharge reed alone, and refrigerant gas remaining in the discharge holes can be reduced, thereby improving compression efficiency. The two discharge holes are each associated with one of the pair of discharge reeds, thereby preventing over-compression loss.Type: GrantFiled: October 26, 1993Date of Patent: September 24, 1996Assignee: Matsushita Refrigeration CompanyInventors: Hiroshi Sasano, Koshi Hamada, Akihiko Kubota
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Patent number: 5554016Abstract: A hermetic compressor for use in refrigeration systems is provided. The hermetic compressor includes a compressor unit disposed within an enclosed compressor casing. The compressor unit has a compression chamber and a valve assembly having an inlet port arranged to introduce refrigerant into the compression chamber and an outlet port for discharging the refrigerant compressed in the compression chamber. The valve assembly includes a valve plate, a single outlet reed valve, and a spring member. The valve plate has formed therein a recessed portion in which the outlet port is formed. The outlet reed valve has a supporting portion and a valve portion for selectively opening and closing the outlet port according to a pressure level of the refrigerant compressed in the compression chamber. The recessed portion has protrusions to define an outlet reed valve housing in which the supporting portion of the valve portion of the outlet reed valve is secured.Type: GrantFiled: October 24, 1994Date of Patent: September 10, 1996Assignee: Matsushita Refrigeration CompanyInventors: Hiroshi Sasano, Masao Mangyo, Koshi Hamada, Akihiko Kubota
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Patent number: 4990067Abstract: A hermetic compressor according to the present invention has an improved operating efficiency for use in a cold storage chamber, freezing chamber or the like . The compression includes a suction pipe which is formed by a material having heat conductivity lower than that of a casing of the hermetic compressor so that heat of the closed casing is not easily transmitted to the suction pipe. In this manner heating of the drawn in cooling medium gas is inhibited, and thus, cooling efficiency can be improved by preventing discharge of a low density cooling medium into the cooling system through compression of the expanded cooling medium gas.Type: GrantFiled: August 7, 1989Date of Patent: February 5, 1991Assignee: Matsushita Refrigeration CompanyInventors: Hiroshi Sasano, Hideki Kawai, Toshihiko Ohta