Abstract:
Disclosed is a rotary damper comprising a damper body mounted on a rotary shaft, a cam mechanism provided in the damper body to set a rotation pattern of the rotary shaft, a restoring force accumulating member which accumulates a restoring force in accordance with rotation of the rotary shaft, and a rotation control member for controlling the rotation of the rotary shaft, wherein the damper body is formed by setting a bottomed, cylindrical outer case having an opening at one end thereof and a bottomed, cylindrical inner case having an opening at one end thereof face to face with each other and fitting the two with each other rotatably, and the rotation control member is interposed between an inner periphery surface of the outer case and an outer periphery surface of the inner case on an outer periphery side of the damper body.
Abstract:
A control panel is retractably received within a recess in an appliance housing. The panel may be moved from an extended position wherein the control panel is exposed outside the cabinet to a retracted position wherein the control panel is enclosed within the recess. A spring urges the control panel to its extended position, and a latch is provided for releasably holding the control panel in its retracted position.
Abstract:
In an opening-closing mechanism of a door member for shifting the door member from a closed position for closing an opening portion of a base member to an open position and vice versa, the door member includes a pair of arm portions. Each arm portion includes a circular arc shape gear and a rotary gear disposed in a center of the circular arc of the gear. The base member includes a first fixed gear portion with internal teeth engaging the circular arc shape gear portion, and a second fixed gear portion disposed inside the first fixed gear engaging the rotary gear. The arm portion is held to move vertically through engagements between the first fixed gear portion and the circular arc shape gear portion and between the rotary gear and the second fixed gear portion, so that the door member is shifted along a path corresponding to the first fixed gear portion.
Abstract:
The provision of a rotational speed controller which is capable of increasing braking torque without a corresponding increase in size, and easily outputting braking torque assumed in the design, and minimizing variations in the braking torque. A casing 6 incorporates a shaft 7 inserted therein, a first rotor 8 rotated together with the shaft 7 in one piece, and a second rotor 10 rotated through the medium of the first rotor 8 and a planet gear 9. A first rotation mechanism for rotating the first rotor 8 is the shaft 7. A second rotation mechanism for rotating the second rotor 10 is a planetary gear mechanism operated in association with the rotation of the first rotor 8.
Abstract:
A sliding door of a vehicle is braked in accordance with a position of the door. The braking is controlled such that the door speed is greater at the beginning of a door-opening or door-closing operation than at the end of the door-opening or door closing operation.
Abstract:
The present invention relates to a hinge, in particular for pieces of furniture, with an arm fixable to the body of the piece of furniture, connected to a portion of hinge that oscillates through two equalizers housed on transversal pins, of whichnullin the portion of one of its oscillation axesnullone equalizer exhibits a projecting part forming a lever arm, and with an elastic member that stresses the projecting part of the equalizer so as to cause a thrust in the closing direction on the oscillating hinge portion. In order to obtain the slowed closing of the door, one of the equalizers is provided with a second projecting part on which a second elastic member acts so as to exert a thrust that, for an oscillation portion close to the closed position of the oscillating hinge portion contrasts the thrust exerted by the first elastic member.
Abstract:
A control mechanism for use with a door closer, comprises a shaft (10), angularly movable between a normal position and a second position, the shaft (10) having a first portion (21a) and a second portion (21b), a brush spring (35) attached to the shaft first portion (21a) to return the shaft to its normal position, and a damping mechanism (36, 38) attached to the shaft second portion (21b) to resist shaft movement to its normal position. The damping mechanism includes a coiled strap-like member (36) keyed to the shaft and contained in a damping medium.
Abstract:
An operative hinge for use with an opening/closing body is provided which comprises a hinge case to be installed to a toilet bowl body for operating the opening/closing body; a shaft provided rotatably within the hinge case to support the opening/closing body; a stationary cam fixed within the hinge case and having formed therein a central through-hole through which the rotating shaft is axially penetrated; a cam provided within the hinge case and having formed therein a central through-hole through which the rotating shaft is axially penetrated to be slidable on, and rotatable with, the rotating shaft; and a resilient means for urging the rotatable sliding cam toward the stationary can, the hinge further comprising, to further positively control the rotation or the rotating means, a damping means consisting of a rubber ring fitted on the rotating shaft and interposed between the outer surface of the rotating shaft and the inner wall of the hinge case; and a viscous oil applied between the outer surface of the rubber ring and inner wall of the hinge case; the rubber ring having spiral recesses formed on the outer surface thereof.
Abstract:
A method and apparatus according to various aspects of the present invention is configured to automatically reset a rollable fire door curtain in the raised position. In one embodiment, a brake is coupled to a rolling fire door axle by an electromechanical clutch. The fire door is pre-disposed to unroll and close the opening, however, the brake prevents the door from unrolling. When a switch, a signal, or a fusible link indicates that the fire door should close, an electromechanical circuit board sends an electrical signal to an electromechanical clutch which opens the clutch. With the clutch open, the brake is no longer coupled to the fire door and the door closes. When the switch or signal is reversed, the clutch closes, re-coupling the fire door axle to the brake. The brake allows input rotation in both directions, but prevents the rolling door from closing under its own weight. Therefore, upon raising the curtain, the fire door is automatically reset and ready to close in the event of a fire.
Abstract:
The sudden unrolling of an motor driven overhead door is a hazardous occurrence. The invention provides a method of detection and warning of a damaged counterbalance mechanism or other defect in the door lifting assembly. The amperage readings of the drive motor are observed to increase between 5% and 30%, above that of normal operation when the function of the counterbalance assembly or similar drive assembly component is compromised. The method is reduced to practice as a number of alternative electronic circuits which are placed between the line power source and the drive motor. The circuit senses the motor amperage draw and compares the reading with a preset threshold value. Upon the sensed value exceeding the threshold value, a warning is broadcast. This method alerts one of undue strain on a damaged lifting assembly prior to its catastrophic failure.