Abstract: To further reduce the space required for installation, and to facilitate installation of a device for opening and closing a door by the stepping force of a pedestrian, the door-opening/closing device includes a step plate (2) provided with multiple bearings, a link (5) whose one end is coupled to a bearing (6) of the step plate (2), with the bearing (6) disposed in a metal part fixed on the floor and coupled to the other end of the link (5). The step plate (2) remains horizontal when stepped on, and moves downward in an arcuate manner in the direction in which the pedestrian is walking. The door (1) is opened and closed using this displacement (i.e., the step plate's downward movement) as a motive force. The return mechanism of the step plate (2) is composed of a link extender in which the other end side of the link (5) is extended in the direction opposite from the step plate (2), and a weight (7) that is axially supported on the extending-end part of the link extender.

Abstract: A self-closing entry system includes an entrance, a base support member located at one side of the entrance, a bearing arrangement attached to the base support member, a gate surface member pivotably mounted to the base support member, a bumper assembly defined by at least one bumper frame member pivotably fastened to the gate surface member at a gate fulcrum, at least one bumper contact element fastened to the at least one bumper frame member, and wherein the at least one bumper contact element is capable of axial rotation about the at least one bumper frame member, a counter-balance assembly extending from the first bumper frame member to the second bumper frame member, and a means for latching the gate system, allowing the gate surface member to move in one direction upon activation of a latching control means.

Abstract: An automatic gate opening device is claimed comprising: a gate drive axis (134), movable between a gate closed position and a gate open position; a treadle (102) and a rechargeable energy storage means (16, 118). The device also comprises an energy conversion means to convert stored energy into rotational movement of the drive axis (134) in a gate opening and energy conversion means to convert stored energy into rotational movement of the drive axis in a gate closing direction. The treadle (102) is configured such that, with the drive axis (134) in its gate open position, a single actuation of said treadle (102) recharges the energy storage means with sufficient energy to move the drive axis from its gate open position to its gate closed position and back to its gate open position.

Abstract: A door opening and closing device for a slide door, which can be horizontally open and close the slide door by application of a light load and which can be constructed and maintained at low costs. The door opening and closing device has a transmission mechanism for converting through a lever (31) the amount of settlement of a tread plate (21) placed on floor surfaces at positions in front and back of the slide door (12), into a predetermined displacement amount. The tread plate (21) is weight-wise balanced such that the transmission mechanism and settlement of the tread plate due to the weight of an adjustment weight (W) causes the tread plate (21) to float through the lever (31). Up-down movement of the long transmission member (32) presses a drive rotation body (42) to an open door rail (41), and a component force of the pressing force allows the slide door (12) to be opened by application of a light load.

Abstract: A garbage storage device includes a base, a bin, a pedal, a lid, a linkage, a buffer and a guide. The bin is installed on the base. The pedal is mounted on the bin. The lid is mounted on the bin. The linkage includes a crankshaft and a rod. The crankshaft includes a shaft mounted on the base, a first crank extending from the shaft for contact with the pedal and a second crank extending from the shaft. The rod includes a middle portion, a first end extending from the middle portion into connection with the second crank and a second end extending from the middle portion into connection with the lid. The buffer includes a first end connected with the base and a second end connected with the first end of the rod. The guide is mounted on the base for guiding and ensuring smooth movement of the first end of the rod.

Abstract: A gate assembly for an animal passageway has two barriers that, when in use, are in close proximity to each other in a closed position and can be moved in opposing directions to each other to be in an open position. The operation of the gate assembly to the open position is achieved by an operator using an operator-activated control mechanism. At least one barrier is configured so that when in the open position it does not intrude into the passageway and activation of the control mechanism is external to the passageway. The gate assembly is maintained in the open position until the operator operates the control mechanism to close the grate assembly. When the assembly is in the open position one barrier is in an upper position with respect to the other. The barrier are pivotally attached to a support at separate pivot points.

Abstract: A fence gate opener with fluid gravity closure assembly having 1) a main closure gate assembly with a main gate assembly; 2) a main support base assembly operable to be connected to a ground support surface and having the main gate assembly pivotally connected thereto; 3) a fluid gravity closure assembly operably connected to the main support base assembly and the main gate assembly for pivotal movement therewith; and 4) a gate actuator treadle assembly operably connected to the main support base assembly and the main gate assembly to cause pivotal movement thereof from the opened to the closed conditions. The main closure gate assembly includes a counterbalance weight assembly being rotatable with the main gate assembly on a pivot shaft member from opened to closed conditions of the main gate assembly. The main support base assembly includes a support frame assembly having a pivotal gate support assembly connected thereto.

Abstract: A foot-operated, window-raising device for a window having a sliding sash, with the window being positioned a predetermined distance from a support surface. The foot-operated, window-raising device includes at least one pulley mounted to a frame member adjacent to the window and a moveable platform. A cord is threaded through the pulley and a first end is attached to the sliding sash. The cord is secured to the platform such that movement of the platform in a first direction causes the cord to open the sliding sash. The cord has a predetermined length which positions the platform between the window and the support surface at a height which is accessible by a user's foot. By stepping on the moveable platform, the platform moves in a first direction causing the cord to open the sliding sash.

Abstract: A semi-automatic gate may be opened from a vehicle by pulling on a line attached to a counterbalance control mechanism. The counterbalance control mechanism comprises a cylinder having a damper-controlled flow of water arrangement which allows an enclosed quantity of water to shift when the gate is opened and to then slowly return past the damper to effect a subsequent gate closing. Water is also used within the gate support structure to provide an additional shifting of weight when the gate is opened or closed.