Inventor

SHAH RAJENDRA K

US53 patents

⚠️ This page may combine multiple inventors who share the name “SHAH RAJENDRA K”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SHAH RAJENDRA K

CARRIER CORP

Detection of clogged filter in an HVAC system

Serial communicating HVAC system

Method of verifying proper installation of a zoned HVAC system

Single integrated humidity and ventilation control in an HVAC system

Humidity control thermostat and method for an air conditioning system

Control of multi-zone and multi-stage HVAC system

Failure mode for HVAC system

Service and diagnostic tool for HVAC systems

Ordered record of system-wide fault in an HVAC system

Self-configuring controls for heating, ventilating and air conditioning systems

Continuous fan control in a multi-zone HVAC system

Method and system for automatically optimizing zone duct damper positions

Controlled setpoint recovery

Detection of clogged filter in an HVAC system

Determination of maximum allowable humidity in indoor space to avoid condensation inside building envelope

Method and system for determining relative duct sizes by zone in an HVAC system

Zone damper fault detection in an HVAC system

Control device

Expandable media filter assembly

Expandable media filter with flexible spacing ribbons

Method and apparatus for assembling an expandable media filter

Apparatus and method of operating a heat pump to improve heating supply air temperature

Method and apparatus for assembling an expandable media filter with spacing ribbons

Method and apparatus for assembling an expandable and disposable media filter

Electronic method for starting a compressor

Heat pump with improved performance in heating mode

Multi-staging of supplemental heat in climate control apparatus

Methods for detecting and responding to freezing coils in HVAC systems

Identification of electric heater capacity

Method of verifying proper installation of a zoned HVAC system

Air conditioning system for low ambient cooling

Method and apparatus for measurement of AC voltages in an HVAC system

Refrigeration systems having diagnostic devices

Simultaneous heating and cooling of multiple zones

Identification of electric heater capacity

Environmental control system with anti-windup structure

Discharge pressure calculation from torque in an HVAC system

Discharge pressure calculation from torque in an HVAC system

GEN ELECTRIC

Control system and methods for a multiparameter electronically commutated motor

Heating ventilating and/or air conditioning system having a variable speed indoor blower motor

Method and apparatus for controlling a blower motor in an air handling system

Variable speed HVAC without controller and responsive to a conventional thermostat

Integrated electronically commutated motor and control circuit assembly

SCHUSTER DON A

Air conditioner self-charging and charge monitoring system

Systems and methods involving heating and cooling system control

SHAH RAJENDRA K

Method and apparatus for establishing a set back temperature for an environmental control system

Method for automatically adjusting the defrost interval in a heat pump system

PURANEN CHRIS

Altitude adjustment for heating, ventilating and air conditioning systems

UNITED TECHNOLOGIES CORP

Duty cycle timer

FAN JUNQIANG

Environmental control system