Patent application number | Description | Published |
20090281204 | Process for the Manufacture of Ionomeric Polybutylene Terephthalate From Polyethylene Terephthalate, and Compositions and Articles Thereof - An ionomeric, modified poly(1,4-butylene terephthalate) copolymer comprising: polyester units comprising non-ionomeric ester units and ionomeric ester units substituted with an inorganic ionic group; and polyester units having at least one residue that is derived from a polyethylene terephthalate component selected from the group consisting of polyethylene terephthalate and polyethylene terephthalate copolymers is described. | 11-12-2009 |
20100298498 | COPOLYETHERESTERS DERIVED FROM POLYETHYLENE TEREPHTHALATE - The invention relates to a composition comprising a modified, random copolyetherester containing a modified, random polybutylene terephthalate copolymer block that is derived from a polyethylene terephthalate component selected from the group consisting of polyethylene terephthalate and polyethylene terephthalate copolymers and combinations thereof; and contains at least one residue derived from the polyethylene terephthalate component; and a polyalkylene oxide copolymer block that contains polyalkylene oxide and at least one residue derived from the polyethylene terephthalate component. The composition has a modulus of elasticity that is at least 80%, as compared to the modulus of elasticity of a copolyetherester derived from (1) polybutylene terephthalate derived from a monomer component selected from the group consisting of terephthalic acid, isophthalic acid, alkyl esters of terephthalic acid, hydroxyalkyl esters of terephthalic acid, alkyl esters of isophthalic acid, 1,4-butanediol, (2) polyalkylene oxide glycol, and (3) combinations thereof. | 11-25-2010 |
20110003964 | PROCESS FOR MAKING POLYBUTYLENE TEREPHTHALATE (PBT) FROM POLYETHYLENE TEREPHTHALATE (PET) - The invention relates to a process for making modified polybutylene terephththalate random copolymers from a polyethylene terephthalate component. The invention relates to a three step process in which a diol component selected from the group consisting of ethylene glycol, propylene glycol, and combinations thereof reacts with a polyethylene terephthalate component under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; and where the first molten mixture is combined with 1,4-butanediol under conditions that create a second molten mixture that is subsequently placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers. The invention also relates to compositions made from the process. | 01-06-2011 |
20110124821 | PROCESS FOR MAKING POLYBUTYLENE TEREPHTHALATE (PBT) FROM POLYETHYLENE TEREPHTHALATE (PET) - In one embodiment, the invention relates to a two step process in which a 1,4-butane diol component reacts with a polyethylene terephthalate component under conditions that depolymerize the polyethylene terephthalate component into a molten mixture and the molten mixture is placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers. In another embodiment, the invention relates to a three step process in which a diol component selected from the group consisting of ethylene glycol, propylene glycol, and combinations thereof reacts with a polyethylene terephthalate component under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; and where the first molten mixture is combined with 1,4-butane diol under conditions that create a second molten mixture that is subsequently placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers. The invention also relates to compositions made from processes of the invention. | 05-26-2011 |
20120214913 | IMPACT MODIFIED POLY(BUTYLENE TEREPHTHALATE) ESTER COMPOSITIONS, METHODS OF MANUFACTURE, AND ARTICLES THEREOF - A dimethyl terephthalate residual composition comprising
| 08-23-2012 |
20120214914 | FLAME RETARDANT POLY(BUTYLENE TEREPHTHALATE) ESTER COMPOSITIONS, METHODS OF MANUFACTURE, AND ARTICLES THEREOF - A dimethyl terephthalate residual composition comprising
| 08-23-2012 |
20120214961 | POLY(BUTYLENE TEREPHTHALATE) ESTER COMPOSITIONS, METHODS OF MANUFACTURE, AND ARTICLES THEREOF - A dimethyl terephthalate residual composition including
| 08-23-2012 |
20130012666 | ELASTOMER BLENDS CONTAINING POLYCARBONATES AND COPOLYETHERESTERS DERIVED FROM POLYETHYLENE TEREPHTHALATE, METHOD OF MANUFACTURE, AND ARTICLES THEREFROM - A composition comprising from 10 to 90 weight percent of a copolyetherester elastomer comprising: a modified, random polybutylene terephthalate copolymer block that is derived from a polyethylene terephthalate component selected from the group consisting of polyethylene terephthalate, polyethylene terephthalate copolymers, and combinations thereof; and that contains at least one residue derived from the polyethylene terephthalate component; and a polyalkylene oxide copolymer block that is derived from the polyethylene terephthalate component and a polyalkylene oxide glycol, and that contains polyalkylene oxide and at least one residue derived from the polyethylene terephthalate component; from 10 to 90 weight percent of a polycarbonate; and from 0 to 60 weight percent of a polyester. | 01-10-2013 |
20130150549 | POLY(BUTYLENE TEREPHTHALATE) ESTER COMPOSITIONS, METHODS OF MANUFACTURE, AND ARTICLES THEREOF - A dimethyl terephthalate residual composition including
| 06-13-2013 |
Patent application number | Description | Published |
20090001921 | Electronic Method for Starting a Compressor - A motor starting apparatus ( | 01-01-2009 |
20100223941 | Air Conditioning System for Low Ambient Cooling - An air conditioning system that comprises a controller that is in electrical communication with a compressor, a condenser fan, a temperature sensor that measures the temperature of the ambient air, a temperature sensor that measures the temperature of a condenser coil of the air conditioning system, and a low pressure switch (LPS) that measure the pressure of a refrigerant disposed within the air conditioning system. An algorithm resident on the controller controls the controller to enter a low ambient cooling mode when the temperature of the ambient air is less than a set temperature. The algorithm further controls the controller so that a minimum and/or maximum cycling frequency is imposed on the condenser fan. The algorithm further controls the controller so that the controller does not respond to an LPS trip during the early part of a cooling cycle under low outdoor temperature conditions, which might not accurately indicate a system fault, but still shuts down the compressor in response to an LPS trip under conditions that truly indicate a system fault. | 09-09-2010 |
20110083450 | Refrigerant System With Stator Heater - A refrigerant system adapted to reduce refrigerant migration therein includes a compressor and a controller. The compressor has a motor with motor windings. The motor windings are responsive to control signals to selectively generate heat in a manner that does not turn the motor. The controller selectively energizes the motor windings to generate heat based on at least one of a monitored temperature or pressure to warm the compressor. | 04-14-2011 |
20110146651 | Altitude Adjustment for Heating, Ventilating and Air Conditioning Systems - HVAC systems and methods are shown which use volumetric air flow and static pressure calculations that correct for different air densities encountered at different altitudes. With respect to the volumetric airflow rate, the systems and methods disclosed herein adjust the calculation of airflow rate to better match the BTU content of de-rated natural gas used at higher elevations, and therefore they are usable in HVAC systems that combust natural gas. The adjusted static pressure calculations may be used in any type of HVAC system. | 06-23-2011 |
20120010753 | Systems and Methods Involving Heating and Cooling System Control - A method for controlling a system comprising, receiving system demand data ( | 01-12-2012 |
20130160470 | Air Conditioner Self-Charging And Charge Monitoring System - A method for determining a level of refrigerant charge in a vapor compression system having a compressor, a condenser, an expansion device and an evaporator operatively connected in serial relationship in a refrigerant flow circuit having a refrigerant, includes receiving information indicative of at least one of a compressor torque or compressor current; and determining whether the refrigerant charge is within a defined tolerance or whether the refrigerant is to be added or recovered in response to the receiving of the information. | 06-27-2013 |
20130174591 | SUPERHEAT CONTROL FOR A REFRIGERANT VAPOR COMPRESSION SYSTEM - A refrigerant vapor compression system includes a compressor, an expansion valve, a compressor speed sensor operatively connected to the compressor, an ambient temperature sensor, and a controller operatively coupled to the expansion valve, compressor speed sensor and ambient temperature sensor. The controller including a superheat control that is configured and disposed to selectively activate the expansion valve to establish a desired superheat value based on a speed of the compressor as sensed by the compressor speed sensor and ambient temperature as sensed by the ambient temperature sensor. | 07-11-2013 |
20130197698 | HVAC System Fault Root Cause Self-Determination - A method for self-determining a root cause of a system fault in a heating, ventilation, and cooling (HVAC) system includes receiving a fault message indicative of a fault condition in an operating characteristic of the HVAC system; determining a causal relationship between the fault condition and a predetermined list of root causes associated with the fault condition; receiving information indicative of operating conditions of the HVAC system; and eliminating at least one root cause that is unrelated to the fault condition in response to the receiving of the information. | 08-01-2013 |
20130317655 | PROGRAMMABLE ENVIRONMENTAL CONTROL INCLUDING AN ENERGY TRACKING SYSTEM - A programmable control unit including a system control unit configured and disposed to receive an energy characteristic from at least one environmental control device. The system control unit determines energy usage data based on the energy characteristic pertaining to operation of the at least one environmental control device. An output device is operatively connected to the system control unit. The output device is configured and disposed to communicate the energy usage data to a user. | 11-28-2013 |
20130325192 | SYSTEM AND METHOD FOR ESTABLISHING ACTIVITY BASED ENVIRONMENTAL CONTROL - A method for establishing activity based environmental control includes selecting an activity phase, associating a plurality of environmental parameters with the activity phase, defining a time period for the activity phase, and controlling at least one environmental control device to establish the plurality of environmental parameters in an environmental zone during the time periods associated with the activity phase. | 12-05-2013 |
20130325193 | METHOD AND APPARATUS FOR ESTABLISHING A SET BACK TEMPERATURE FOR AN ENVIRONMENTAL CONTROL SYSTEM - A method for establishing a set back temperature for an environmental control system includes entering an energy saver control phase having a predetermined time period, determine an effective thermal load for an environmental control zone, calculating a set-back temperature based on the effective thermal load for the environmental control zone and the predetermined time period, operating an environmental control device to establish and maintain the set-back temperature for a portion of the predetermined time period, and operating the environmental control device to establish a desired temperature substantially by an end of the predetermined time period. | 12-05-2013 |
20130340448 | ELECTRIC RE-HEAT DEHUMIDIFICATION - An electric re-heat dehumidification apparatus to dehumidify a conditioned space is provided and includes a conditioning unit to produce an output airstream including overcooled air to be provided to the conditioned space to overcool the conditioned space during the dehumidifying of the conditioned space, a resistive element disposed within an output airstream of the conditioning unit, which, when activated, heats the overcooled air of the output airstream and a controller, operably coupled to the resistive element, to activate the resistive element in accordance with information of the conditioning unit, the resistive element and a temperature of the conditioned space to limit the overcooling of the conditioned space. | 12-26-2013 |
20130345995 | Air Flow Control And Power Usage Of An Indoor Blower In An HVAC System - A method for determining an air flow of an air handler including an indoor blower and a motor coupled to a heating, ventilation, and cooling (HVAC) system, includes receiving a signal indicative of an air flow at an extreme operating range of the HVAC system; receiving operational constants of the air handler, the operational constants representing performance characteristics of the air handler; transmitting a torque command to the motor; receiving a motor signal indicative of an operating speed of the motor; and determining the air flow using at least the operating speed and the operational constants. | 12-26-2013 |
20140343733 | Systems And Methods For Compressor Overspeed Control - A method for controlling a system includes receiving system demand data; processing the system demand data; defining a first value of a first system operating parameter; receiving system condition data; associating the first value of the first system operating parameter with a first operating map function; determining whether the system condition data exceeds a threshold of the first operating map function; determining whether the system condition data exceeds a threshold of a second operating map function responsive to determining that the system condition data exceeds the threshold of the first operating map function; and changing the first value of the first system operating parameter to a second value associated with the second operating map function responsive to determining that the system condition data does not exceed the threshold of the second operating map function. | 11-20-2014 |
20150027138 | Discharge Pressure Calculation From Torque In An HVAC System - A method for determining discharge pressure for a compressor operatively connected to a condenser, an expansion device, and an evaporator in a serial relationship, includes receiving information indicative of a compressor torque or compressor current; and determining a discharge pressure in response to the receiving of the information. | 01-29-2015 |