3184 results about "Damper" patented technology

A damper includes a piston rod, a damping piston, at least one cylinder containing a damping liquid, a fixed partition member for partitioning the interior of the damper into two liquid chambers, a pressure source, and a valve in communication with the pressure source which reacts as a function of the pressure. The valve can also be in communication with additional forces, such as mechanical spring forces, which can be adjustable. The valve can include a pressure intensifier. The valve generates fluid flow resistance during flow of liquid in a first direction through the partition member. The fluid flow resistance in the first direction varies according to the amount of force communicated to the valve by the pressure source and any additional forces. The partition member can include means for providing low-resistance return flow of liquid in a second direction.

A stabilized field sensor apparatus collects field data, in particular magnetic field data, with reduced motion noise. The apparatus includes a tear drop shaped housing, a tow frame in the housing, a plurality of vibration isolating dampers spaced around the frame, a base assembly mounted to the dampers, a support pedestal having a bottom end fixed to the base assembly and an upper free end, a single spherical air bearing connected to the upper free end of the pedestal, an instrument platform with a lower hollow funnel having an upper inside apex supported on the air bearing for a one point support, principal and secondary gyro stabilizers for maintaining pivotal and rotational stability, and at least one field sensor mounted to the instrument platform for collecting the field data while being stabilized against motion noise including vibration, pivoting and rotation from the base assembly, from the tow frame and from the housing. Stabilization of the instrument platform is enhanced by preserving accurate balance through a dynamic balancing system whereby small masses are moved under computer control to maintain the center of mass of the instrument platform at the center of rotation of the spherical air bearing. The dynamic stabilization process is made more precise by actively vibrating the instrument platform by a set of linear vibrators.

A control system for an adjustable damping force damper of a suspension apparatus of a vehicle, includes a lateral acceleration detecting unit detecting a lateral acceleration of the vehicle at a gravity point thereof, a yaw rate detecting unit detecting a yaw rate of the vehicle and a control unit controlling a damping force of the damper. The control unit calculates a first target damping force based on an output of the lateral acceleration detecting unit, calculates a second target damping force based on a lateral acceleration at an axel position which is estimated by an output of the yaw rate detecting unit, compares an absolute value of the first target damping force with that of the second target damping force and sets a target controlling value of the damping force in accordance with the first or second target damping force which has a larger absolute value.

A vehicle body inclination angle regulating unit (17) includes a balancing oil cylinder (10). One chamber of the balancing oil cylinder (10) is connected with an oil tank (5) and an oil source for leveling operation via a first one-way damper valve (8) and an electric controlled switch valve (7), and the other chamber of the balancing oil cylinder (10) is connected with a non-rod chamber of a suspension oil cylinder via an electric controlled shutoff valve (14) and a second one-way damper valve (9). In addition, an automatically-leveling hydropneumatic suspension mechanism includes at least two pairs of suspension oil cylinders (12), vehicle body inclination angle regulating units (17), a vehicle body transverse inclination angle sensor (1) and a control unit (3). Each suspension oil cylinder (12) is correspondingly provided with the vehicle body inclination angle regulating unit (17) including the balancing oil cylinder (10). The present invention realizes effectively dynamic leveling function of different road conditions, especially transverse slopes, of the mobile crane. The mobile crane is provided with simple operation that are all automatically performed by the control unit, which improves driving safety remarkably and prevents an accident of vehicle overturning.

A damper assembly (50) adapted to a reciprocative door closer device (10) and contingent door (62), the device (10) comprising a piston rod (16) which functions reciprocatively from within a piston body (12) controlling a biasing means (11); the rod (16) normally loosely mounted with a checking mechanism (22) for variably holding both the rod (16) in an extended position (16-B) and a door (62) in an open position (62-B); the assembly (50) comprising a fixated bracket (50-A) with an offsetting fastener means (52) for universal attachment to left and right hinging doors (62), and, similar to the reciprocative device (10), the assembly (50) comprising an extensible bracket (50-A) controlling a counter biasing means (55) by use of an operator (54) selected from a group including a spring operator means (54-A) that acts to dampen, counter, and protect the device (10) and the door (62) from damage due to excessive inward biasing forces (11-B), and, acts to compensate for a superior checking mechanism (22) such as when the extended rod (16-B) is being held with the engaged mechanism (22-B) and the opened door (62-B) is moved towards the closed position (62-A) without first disengaging the mechanism (22-B), which, simultaneously now commissions the device (10) to return the door (62) to the exact opened position (62-B) determined by the engaged mechanism (22-B) holding the extended rod 16-B.

The invention pertains to the technical field of precision damping, and is a heavy-load precision damper and a damping system comprising thereof. The damper comprises a low-rigidity air spring with variable damp, an inverted-pendulum structure with low horizontal rigidity and a group of three-degree-of-freedom active damping actuators. The structure of the air spring is external-internal annularity double air chambers communicated with a throttling hole; the inverted-pendulum structure comprises a main supporting rod and at least two flexible swing rods and is located in an annular air chamber; and the active damping actuator comprises three linear motors arranged in an orthogonal manner. The heavy-load precision damper vertically generates large bearing force by the air spring, respectively separates vertical and horizontal vibration transmission by the air spring and the inverted-pendulum structure, and actively controls the damp vibration by acting force of the vertical and horizontal linear motors. The damping system comprises at least three heavy-load precision dampers arranged in the shape of a polygon, and realizes six-degree-of-freedom precision damping of a vibration-isolation device by the mutual action of every heavy-load precision dampers.

A split air conditioner has a cabinet with a fan and evaporator for mounting within a structure. The cabinet includes one or more movable dampers or movable filters positioned in the flow path between the air inlet and the outlet for selectively filtering contaminants from the air to provide a greater or lesser degree of filtration of the air. The movable filters include sliding and/or pivot mounting structure which may accommodate stacking multiple filters with different filtering characteristics. The system may operate in a filtering only mode with no cooling, a cooling only mode with no filtering, or a combination of cooling and selective filtering.

A constructed enclosure, adjacent to an interior habitable space, uses a microprocessor-based control unit to operate enclosure openings to provide a multi-layer insulation barrier containing or creating heat, or providing a radiant barrier, isolating by open air, a thermal insulating layer from warm exterior surfaces, maximizing insulation values. The enclosed space, through the use of openings, which in one embodiment are windows, skylights and dampers connected to louvers, is heated by radiant exposure or cooled by natural air flow or exhaust fan. Return air is heated upstream from a forced air heating unit by traversing ductwork heated by the enclosure and by direct solar exposure from enclosure windows. Enclosure openings to the habitable interior spaces create air displacement drawing warm air out of the interior and fresh air in through exterior windows. The energy efficient system is tailored for immediate climate specific conditions.

This invention relates to a novel apparatus and method for automatically and dynamically regulating the intake of air into the combustion chamber of a heating unit such as a wood burning stove, furnace, or fireplace to ensure even and efficient burning of fuel. More particularly, this invention pertains to a method and apparatus that uses negative gas pressure in the heating unit's flue, and no additional temperature or pressure sensors, to automatically and dynamically control a damper regulating intake of air into the combustion chamber in inverse relation to changes in negative flue gas pressure. This method and apparatus are especially useful in combination with a heating unit having two combustion chambers, one chamber for combustion of solid fuel and a second chamber for further combustion of exhaust gases and other byproducts from combustion in the first chamber. The two-stage combustion in a dual chamber heating unit is an especially dynamic situation where traditional static controls are not very effective.

A Self-Contained Air-Conditioned Enclosure; comprises of an Enclosure (1), connected through plurality of openings (13,14) to air ducts (20,21) of an Air-conditioning Unit (17). The Enclosure has a Roof (5), and sidewalls assembled with plurality of Wall Sheets (8) interspaced with Spacer Strips (9) to enhance thermal resistance of the sidewalls. The bottom of the sidewall is inserted under the structure that forms the floor to create an isolated enclosure. The Air-conditioning Unit (17) supplies the Enclosure through the Supply Air Duct (21) and withdraws air through Exit Air Duct (20). Part of the withdrawn air is reconditioned and supplied to the enclosure; the other part is replaced by fresh air. Energy is conserved from the replaced air in Heat Transfer Duct (37) and transferred to fresh air in Fresh Air Chamber (36). Unit efficiency is improved by mixing the exhausted withdrawn air in the Compressor Chamber (31) and exhausted by the Exhaust Air Duct (28). Flow of fresh air is controlled through the Air Damper (39) and Control Knob (38).

An actuator for relatively moving two parts in a damped manner. The actuator includes a damper housing for connection to a first of the parts. The damper housing includes a damper chamber. The actuator includes a drivable damper rod for connection to a second of the parts and being movable relative to the damper housing. The damper rod includes a damper unit located within the damper chamber. The damper unit is relatively movable within the damper chamber with the damper unit movement corresponding to the relative movement between the damper housing and damper rod and the relative movement between the first and second parts. The damper unit is movable in response to hydraulic pressure force upon the damper unit. The actuator includes a pneumatic pressure source for providing a pneumatic pressure force that is transferred to provide the hydraulic pressure force upon the damper unit. The actuator includes a selectively actuatable blocking device for permitting transfer of the pneumatic pressure force from the pneumatic pressure source and blocking return of force to the pneumatic pressure source until the selectively actuatable blocking device is actuated.

A system and method are provided for controllably drying moisture-containing work pieces. The system comprises a drying compartment defining an internal workspace for housing and drying the moisture-containing work pieces by introducing heat into the internal workspace and heating the moisture-containing work pieces located in the internal workspace by removing heated moisture from the work pieces and absorbing the heated moisture into the air in the workspace to produce heated humidified air. A multi-directional air flow heat exchanger is employed for receiving heated humidified air and atmospheric air and for recycling waste heat from exhaust air from the drying compartment, and for heating the atmospheric air in the heat exchanger using recovered heat extracted from the heated humidified air to a temperature higher than ambient temperature thereby reducing energy costs and drying time and preventing the loss of circulation air. First and second reversible variable speed fans are also included in the system. Each of the fans is independently controllable at respective intake and exhaust modes and at variable air flow rates, without employing a damper for controlling the flow of exhaust air and atmospheric air to and from the heat exchanger.

The invention relates to the field of machining, in particular to car damper inner pipe automatic cutting and end face grinding integrated equipment. The car damper inner pipe automatic cutting and end face grinding integrated equipment comprises a workbench and further comprises a feeding assembly, a moving assembly, a clamping assembly, a cutting assembly, a grinding assembly and a discharging assembly. The feeding assembly, the moving assembly, the clamping assembly, the cutting assembly, the grinding assembly and the discharging assembly are all arranged at the top of the workbench, and the moving assembly is located beside the feeding assembly. The clamping assembly is located on one side of the moving assembly, and the cutting assembly is located beside the clamping assembly. The discharging assembly is located beside the side, away from the cutting assembly, of the clamping assembly, the grinding assembly is located between the cutting assembly and the discharging assembly, andthe feeding assembly comprises a feeding groove and a limiting mechanism. According to the car damper inner pipe automatic cutting and end face grinding integrated equipment, the problem that when a car damper inner pipe is machined, the car damper inner pipe cannot be subjected to cutting and end face grinding at the same time is solved, the labor for manual feeding and discharging is reduced, and the machining efficiency of the car damper inner pipe is improved.

A sensor device for use in an automobile as an airflow sensor is composed of a silicon substrate in which a cavity is formed and a base plate bonded to the silicon substrate. An upper end of the cavity is closed with a thin membrane including a sensor element such as a temperature sensor element, while a lower end of the cavity is closed with the base plate. An air passage having a small cross-section is formed through the base plate, so that the cavity communicates with the outside air through the air passage. The thin membrane is prevented from being damaged by collision with foreign particles included in the airflow because the air in the cavity functions as a damper. The air passage may be made in the silicon substrate in parallel to its surface without using the base plate.

The invention relates to the technical field of civil engineering anti-seismic energy dissipation and disaster prevention and reduction control, in particular to a gear type re-centering damper based on SMA (Shape Memory Alloys) materials. The damper comprises a protection sleeve, a force transmission steel plate, a first steel plate group with gears, a second steel plate group with gears, gears, gear plates, SMA wires, locking screw nuts and position limiting strips. The damper has the advantages that the structure is simple; economical and practical effects are achieved; the performance is reliable; the service life is long; the hyperelastic SMA materials are used; through a great-transmission-ration displacement amplification type mechanical moving system consisting of the force transmission steel plate, the gears and the gear plates, the excellent energy dissipation function and the excellent re-centering function of the damper are realized; the fast response to the to power reaction of a civil and architectural engineering structure provided with the gear type re-centering damper under the seismic effect can be realized; in the dissipation aspect, the partial seismic energy is dissipated by an engineering structure body; and the goal of effectively reducing the engineering structure damage degree is achieved.

A curtain control device has a stroke setting device and a damper respectively assembled at both ends of a curtain spindle rod. A torsion element is further assembled on the curtain spindle rod. A curtain spindle sleeve is invaginated on the outside of the curtain spindle rod, the stroke setting device and the damper. The curtain spindle sleeve is assembled with the combination of the curtain spindle rod and the damper, and then a curtain fabric is assembled on the outside of the curtain spindle sleeve. In this manner, the opening range of the curtain fabric roll is controlled by the stoke setting device, and the roll-up speed of each part of the curtain fabric is slowed down by the damper so as to reduce effectively the noise produced by the quick actuation of each part and the defective rate.