Abstract:
An arrangement for automatically engaging and disengaging a brake on rotating apparatus comprising a rotatable brake drum and a pair of brake shoes pivotally mounted for engagement with the drum. Free ends of the brake shoes are urged together by spring forces bringing the brake shoes into braking engagement with the drum. A brake release mechanisms includes a pivoted release member with a cone-shaped stud slidably connected thereto. The brake shoes are disengaged by rotating the release member which forces the stud between the brake shoe free ends and separates the brake shoes from the drum. The conical stud and its slidable connection to the pivoted release member simplifies assembly and maintenance of the arrangement.
Abstract:
A security enclosure includes an access gate comprising at least one rigid barrier which can be retracted or advanced by remotely-actuated power means for opening and closing the gate. A support and drive structure which supports the driven end of the barrier includes upper drive means which provide positive drive connections to an upper surface of the barrier through downward pressure on at least two laterally-separated points and corresponding lower drive means which provide positive drive connections to a lower surface of the barrier and support the barrier on at least two laterally-separated points, with the upper and lower drive means being driven by a common power source and connecting drive means to open and close the gate. Remote switching means are provided to operate the drive means and latch means to open and close the gate. The upper and lower drive means can be rollers driven by belt drives. The barrier and/or fence can include framework structures of tubular stock, the tubes being interconnected to permit the insertion of reinforcing cables.
Abstract:
An electromechanical device for activating a rotating post that moves the leaf of a swinging door on a vehicle, especially a mass-transit vehicle. An electric motor activates the column by means of an intermediate worm gear. The motor outtake shaft is coupled to the worm-gear intake shaft. A worm wheel is coupled to the worm-gear outtake shaft, which activates the rotating post. The electromechanical activating device contains an emergency mechanism for uncoupling the worm-gear outtake shaft from the worm wheel in relation to their rotation. The mechanism incorporates a coupling that can be disengaged between the outtake shaft and the worm wheel, which is mounted over it coaxially. The mechanism also involves several balls situated such that they can be forced into recesses in the outtake shaft while simultaneously engaging axial grooves in the inner surface of the worm wheel. The end of the outtake shaft that is remote from the rotating post has an axial bore that the recesses lead into and that accommodates a cylindrical slide. The balls rest against the surface of the slide. The slide has an initial longitudinal section with a diameter that ensures that a prescribed volume of each ball will project out of the recesses. The slide also has an adjacent longitudinal section with a diameter that continuously decreases to a length such that the balls will completely enter the recesses. A mechanism displaces the slide to a prescribed extent against the force of a compression spring.
Abstract:
A damper for the door of a cassette housing in a cassette tape recorder is formed by unrotatably inserting a resisting member provided with radially extended vanes around a support shaft protuberating from a base plate and setting the resisting member within a cup-shaped rotary member thereby allowing the vanes to slide frictionally on the inner wall surface of the rotary member. This damper is mounted in the machine proper of the recorder by fastening the resisting member to the machine proper through the medium of the fitting member and pivotally attaching the door to the rotary member by utilization of a rack and pinion. The opening and closing motion of the door is braked by the frictional slide of the resisting member on the inner wall surface of the rotary member. Thus, the shocks and vibration produced by the opening and closing motion of the door are abated.
Abstract:
Closing arrangement for sliding doors adapted to move between closed and open positions along a lengthwise guide track. The arrangement includes a rotor operatively connected with connecting links connected to the door and arranged to move along the guide track. Brake arrangement is mounted with a drive member mounted in coaxial alignment with the rotor shaft. The closing arrangement is provided with a coupling device which is operatively connected to the rotor shaft and comprises an electromagnetic coupling and a friction coupling mounted on a common shaft. The coupling device prevents an inadvertant backward movement of the open sliding door to its closed position.
Abstract:
A stationwagon vehicle body has a tailgate movable in an arcuate path between a lowered open position and a raised closed position. The tailgate is power actuated through a bi-directional drive mechanism which allows manual closing of the tailgate but prevents its manual opening.
Abstract:
975,070. Hinges. ATWOOD VACUUM MACHINE CO. Feb. 26, 1962 [Sept. 22, 1961], No. 7373/62. Heading E2F. A hinge, particularly for an automobile door, comprises a generally U-shaped outer member 13 and an inner member 18 pivoted on a pintle 24 between the limbs 11, 12 of the U, at least one of the edges 16, 17 of the inner member being provided with a friction area, preferably in the form of a pad 14, which is in frictional engagement with the inner surface of the adjacent limb of the outer member through at least a portion of the range of movement of the hinge, the said surface being so shaped that the frictional resistance to the movement of the hinge in the said portion of the range varies with the relative angular positions of the two members. In Fig. 3 the limbs are formed with ramps 10 which increase the frictional resistance as the door approaches its open position, but various combinations and arrangements of ramps are illustrated whereby the resistance can be increased, decreased or maintained constant at various stages of the movement. The pads 14 are fitted in recesses 15 in the member 18, ribs 42 being formed in the base of each recess to anchor the pads permanently in place. A rubber bumper 40 (not shown) may be fitted on a cross-brace 28 of the outer member to arrest the inner member in the open position. Specification 758,330 is referred to.
Abstract:
A hinged system includes a preassembled hinge module for pivotally coupling a first component to a second component. The preassembled hinge module includes a shaft, a torque element frictionally engaging the shaft, and a housing. The housing includes a cover, a side wall, and a rear wall that define an interior space enclosed within the housing. The interior space receives the torque element inside the housing. The cover defines a first aperture, and the rear wall defines a second aperture, the first aperture and the second aperture aligned with a pivot axis of the shaft. The shaft extends through at least the first aperture, the interior space, and the second aperture. The shaft is separate from, and configured to be mounted to, the first component. The housing is separate from, and configured to be mounted to, the second component.
Abstract:
A hinge for articulatedly connecting first and second components, with first and second hinge parts for fastening to the first and second components, respectively, with a first pivot arm which comprises a first articulation axis on the first hinge part and a second articulation axis on the second hinge part, wherein the first hinge part comprises a longitudinal guide for the first articulation axis of the first pivot arm, and with a second pivot arm which comprises a first articulation axis on the first hinge part and a second articulation axis on the second hinge part, wherein the first hinge part comprises a damping element, wherein the first pivot arm is connected to a braking element, wherein a setting element is provided which comprises a pressing part, which acts on the damping element, and an actuating part, wherein the actuating part is in an access hole of the first hinge part.