73results about How to "Rigid structure" patented technology

A chair includes a first leg, a second leg pivotally mounted on the first leg, and a seat frame mounted on the first leg and the second leg by a plurality of detachable connecting members. Thus, the first leg, the second leg and the seat frame are assembled and disassembled easily and conveniently, thereby facilitating the user mounting the chair. In addition, the seat frame is combined with the first leg and the second leg by the connecting members, thereby simplifying the working procedure.

A trailer hitch alignment device is provided having a hitch alignment guide and a ball target mast. The hitch alignment guide has a vertically disposed, elongated alignment mast affixed to a magnetic, disc shaped hitch base. The ball target mast is composed of a vertically disposed, elongated alignment mast affixed to a magnetic, ring shaped ball base. The masts are telescoping shafts having linearly spaced alignment indicia are provided in a linearly spaced manner along the upper portion of the shafts.

Bases are disclosed that comprise a projecting portion designed to receive over it the hollow end of a pole or other elongate member, which may form part of a structure such as a pavilion or umbrella. The projecting portion of the base comprises wedges that move in response to the end of the pole moving over the projecting portion and in so moving, the wedges increase the effective cross section of the projecting portion to engage the inner surface of the end of the pole and to thereby stabilize the structure on a support surface, such as the ground. Braces are also disclosed that pull together adjacent poles of a pavilion to make the structure more rigid.

The invention relates to a variable-focus lens (60) for focusing light rays in light paths passing through the lens along an optical axis (Δ). The lens comprises an arrangement of first and second immiscible liquids (67, 68) that have different refractive indices and are in contact over a moveable refractive optical interface (69), a volume of gas (72) in contact with one of said liquids, and a retention measure (70, 74) for keeping the volume of gas away from the light paths of the light rays passing through the lens for focusing.

An optical transceiver module is provided with a delatch device that is configured for pushing and pulling an optical transceiver module into and out of a cage. The delatch device includes an elongated handle having at least one strength member integrally formed therein or secured thereto that provides the handle with a sufficient moment of inertia to prevent the handle from bending or buckling when a force is being applied to the elongated handle to push an optical transceiver module into a cage. The elongated handle allows a module to easily be inserted into a cage by a user without the user having to directly access the front face of the module.

The present invention relates to a ruggedized enclosure for housing and protecting electronic circuits. The enclosure utilizes a top compartment for housing the circuit and a cooling assembly rigidly coupled to the top compartment. The cooling assembly utilizes a passive radiator to form a rigid truss plate structure. The truss plate structure rigidifies the enclosure helping to protect the enclosure and circuit from destructive shock events and destructive vibration events. The cooling assembly further provides an efficient heat exchange for removing heat from the electronic circuit. A method for protecting an electronic circuit utilizing a rigid truss plate structure is also provided.

A door structure with glass at least comprising a front panel, a rear panel, an inner hollowed-frame assembly, a glass mounted assembly and at least one glass, wherein the front panel and the rear panel are configured with a plurality of positioning protrusions at inner sides for assembling the inner hollowed-frame assembly inside the door structure with glass without using screws; the structure may render the inner hollowed-frame assembly able to support and assemble the glass mounted assembly and the glass with rigidity.

A turning machine for producing non rotationally symmetric surfaces of synthetic spectacle lenses, having a support plane E, a machine bed made of cast iron with a width b1 and a mass m1, a linear motor with an actuator comprising a turning tool holder and an oscillation axis Z, a workpiece spindle with a rotational axis C and a movement axis X, wherein the machine bed has at least two bearing surfaces arranged at a distance for the linear motor and for the workpiece spindle, and between the two bearing surfaces, a chip space is provided which is limited at least partially by the machine bed, wherein the linear motor is supported on the first bearing surface and the workpiece spindle is supported on the second bearing surface in relation to the chip space opposite the linear motor, wherein the mass of the machine bed has the maximum value m1, and the value m1 lies between 100 kg and 500 kg, between 150 kg and 300 kg, between 170 kg and 200 kg or 180 kg. A turning machine, in which the ratio of the mass m1 of the machine bed to a moved mass m2 of the linear motor 3 is greater than a quotient Q, wherein the quotient Q is between 1:500 and 1:20, between 1:60 and 1:30 or between 1:140 and 1:100, or 1:40 or 1:120.