Abstract: A filter element for a heating, ventilation, and/or air conditioning (HVAC) system includes a filter media pack and a first support element. The filter media pack includes a pleated filter media. The first support element includes a connecting member that is coupled to the pleated filter media and includes at least a portion of a curved wall that curves above a central axis that extends substantially parallel to an insertion direction of the filter element into a filter housing. The first interface member is located at a distal end of the connecting member and defines a first support ledge that is disposed over the connecting member and that extends substantially parallel to the insertion direction.

Abstract: A filter element for a heating, ventilation, and/or air conditioning (HVAC) system includes a filter media pack and a first support element. The filter media pack includes a pleated filter media. The first support element includes a connecting member that is coupled to the pleated filter media and includes at least a portion of a curved wall that curves above a central axis that extends substantially parallel to an insertion direction of the filter element into a filter housing. The first interface member is located at a distal end of the connecting member and defines a first support ledge that is disposed over the connecting member and that extends substantially parallel to the insertion direction.

Abstract: A filter element for a heating, ventilation, and/or air conditioning (HVAC) system includes a filter media pack and a first support element. The filter media pack includes a pleated filter media. The first support element includes a connecting member that is coupled to the pleated filter media and includes at least a portion of a curved wall that curves above a central axis that extends substantially parallel to an insertion direction of the filter element into a filter housing. The first interface member is located at a distal end of the connecting member and defines a first support ledge that is disposed over the connecting member and that extends substantially parallel to the insertion direction.

Abstract: A filter element for a heating, ventilation, and/or air conditioning (HVAC) system includes a filter media pack, a support element, and a magnetic material. The support element is configured to couple the filter media pack to a filter housing. The support element extends along a longitudinal direction from a first longitudinal end to a second longitudinal end. The magnetic material is disposed on the first longitudinal end of the support element. The magnetic material is configured to magnetically engage a second magnetic material of the filter housing to facilitate alignment between the a housing rail of the filter housing and the support element during installation of the support element into a filter housing.

Abstract: A filter element for a heating, ventilation, and/or air conditioning (HVAC) system includes a filter media and a support element. The support element includes a first interface member, a second interface member, and a connecting member. The first interface member and the second interface member define opposing lateral ends of the support element and extend parallel to one another. The first interface member and the second interface member are engageable with complementary receiving structures of a rail to support the support element on the rail. The connecting member is coupled to the filter media and extends from the first interface member to the second interface member. The connecting member includes a concave portion extending from the first interface member and a convex portion extending from the second interface member.

Abstract: A filter element for a heating, ventilation, and/or air conditioning (HVAC) system includes a filter media and a support element. The support element includes a first interface member, a second interface member, and a connecting member. The first interface member and the second interface member define opposing lateral ends of the support element and extend parallel to one another. The first interface member and the second interface member are engageable with complementary receiving structures of a rail to support the support element on the rail. The connecting member is coupled to the filter media and extends from the first interface member to the second interface member. The connecting member includes a concave portion extending from the first interface member and a convex portion extending from the second interface member.

Abstract: A filter element for a heating, ventilation, and/or air conditioning (HVAC) system includes a filter media pack and a first support element. The filter media pack includes a pleated filter media. The first support element includes a connecting member that is coupled to the pleated filter media and includes at least a portion of a curved wall that curves above a central axis that extends substantially parallel to an insertion direction of the filter element into a filter housing. The first interface member is located at a distal end of the connecting member and defines a first support ledge that is disposed over the connecting member and that extends substantially parallel to the insertion direction.

Abstract: A filter element for a heating, ventilation, and/or air conditioning (HVAC) system includes a filter media and a support element. The support element includes a first interface member, a second interface member, and a connecting member. The first interface member and the second interface member define opposing lateral ends of the support element and extend parallel to one another. The first interface member and the second interface member are engageable with complementary receiving structures of a rail to support the support element on the rail. The connecting member is coupled to the filter media and extends from the first interface member to the second interface member. The connecting member includes a concave portion extending from the first interface member and a convex portion extending from the second interface member.

Abstract: A damper regulator for controlling the opening/closing characteristics of an HVAC damper has a swing arm coupled to the shaft on which the damper pivots. The swing arm has an arm carriage mounted to translate on the swing arm as the swing arm pivots, and a biasing spring connects the arm carriage to the damper regulator's housing, or to another suitable anchor. The translation of the arm carriage effectively adapts the characteristics of the biasing spring so that the damper need not be subjected to ever-increasing pressure to achieve greater airflow, or so that other damper opening characteristics can be achieved.

Abstract: A damper regulator for controlling the opening/closing characteristics of an HVAC damper has a swing arm coupled to the shaft on which the damper pivots. The swing arm has an arm carriage mounted to translate on the swing arm as the swing arm pivots, and a biasing spring connects the arm carriage to the damper regulator's housing, or to another suitable anchor. The translation of the arm carriage effectively adapts the characteristics of the biasing spring so that the damper need not be subjected to ever-increasing pressure to achieve greater airflow, or so that other damper opening characteristics can be achieved.

Abstract: A medical diagnostic instrument that enables optical viewing of a target area, includes an optical system disposed within an instrument housing, the optical system including at least one primary optical element disposed along an optical axis. A focusing screen is distally aligned along the optical axis for focusing an image of the target area received from the optical system. The focusing screen enables a user to view the target area without requiring an eyepiece, thereby permitting the caregiver to conduct examinations without requiring intimate contact between the patient and the caregiver.

Abstract: A medical diagnostic instrument that enables optical viewing of a target area, includes an optical system disposed within an instrument housing, the optical system including at least one primary optical element disposed along an optical axis. A focusing screen is distally aligned along the optical axis for focusing an image of the target area received from the optical system. The focusing screen enables a user to view the target area without requiring an eyepiece, thereby permitting the caregiver to conduct examinations without requiring intimate contact between the patient and the caregiver.

Abstract: An enamel flow coating process and apparatus is arranged as a four arm Ferris wheel like apparatus which is mounted over a bathtub like tank which holds enamel slip. Coils of steel tubing formed into heat exchangers are mounted to the arms of the wheel to rotate and to pivot. The wheel is rotated between four stations. In the first station, a coil is loaded onto the wheel. In a second station the coil is pivoted into the tank of enamel slip, where it is coated, and withdrawn by operation of a pivoting bracket. The coated coils are rotated through third and fourth stations where the coating solidifies, and the coated heat exchanger is removed, and replaced with an uncoated one in the first station. After leaving the wheel, the heat exchanger is fired and installed in a water storage tank.

Abstract: An enamel flow coating process and apparatus is arranged as a four arm Ferris wheel like apparatus which is mounted over a bathtub like tank which holds enamel slip. Coils of steel tubing formed into heat exchangers are mounted to the arms of the wheel to rotate and to pivot. The wheel is rotated between four stations. In the first station, a coil is loaded onto the wheel. In a second station the coil is pivoted into the tank of enamel slip, where it is coated, and withdrawn by operation of a pivoting bracket. The coated coils are rotated through third and fourth stations where the coating solidifies, and the coated heat exchanger is removed, and replaced with an uncoated one in the first station. After leaving the wheel, the heat exchanger is fired and installed in a water storage tank.

Abstract: A medical diagnostic instrument includes a housing containing at least one battery and a light source, such as a lamp, for illuminating a medical target. A switch includes a movable member that selectively moves at least one of the battery and the lamp into and out of electrical connection with the other. The instrument is preferably fabricated from a diecast or an extrusion process wherein a thin plastic sleeve member having text and/or graphic materials can be shrink fitted onto an extruded handle.

Abstract: An LED for use with a medical diagnostic instrument having an adapter disposed between an instrument head and a hand-grippable handle, the LED being removably attachable in relation to the adapter in order to permit selective replacement of the LED, as needed. The LED is situated in order to provide mechanical and electrical interface with at least one of the adapter and the instrument, thereby enabling the adapter and the LED to convert the illumination source of the instrument selectively between an incandescent light source and the LED. The adapter matches a polarity between the LED and a power supply that is specifically intended for powering an incandescent light source.

Abstract: An adapter for permitting a medical diagnostic instrument having an illumination source including at least one LED (light emitting diode) to be used with a power supply normally configured for use with a diagnostic instrument having at least one incandescent lamp as an illumination source. The adapter includes circuitry for compensating LED specific characteristics for permitting the power supply to be used with the LED.

Abstract: A medical diagnostic instrument includes a housing containing at least one battery and a light source, such as a lamp, for illuminating a medical target. A switch includes a movable member that selectively moves at least one of the battery and the lamp into and out of electrical connection with the other. The instrument is preferably fabricated from a diecast or an extrusion process wherein a thin plastic sleeve member having text and/or graphic materials can be shrink fitted onto an extruded handle.

Abstract: An adapter for permitting a medical diagnostic instrument having an illumination source including at least one LED (light emitting diode) to be used with a power supply normally configured for use with a diagnostic instrument having at least one incandescent lamp as an illumination source. The adapter includes circuitry for compensating LED specific characteristics for permitting the power supply to be used with the LED.

Abstract: An adapter for permitting a medical diagnostic instrument having an illumination source including at least one LED (light emitting diode) to be used with a power supply normally configured for use with a diagnostic instrument having at least one incandescent lamp as an illumination source. The adapter includes circuitry for compensating LED specific characteristics for permitting the power supply to be used with the LED.