Showing papers on "Tripod (photography) published in 1987"

Universal tripod head

Abstract: A tripod head includes a base member adapted to be mounted on a separate tripod for pivotal movement about a panning axis and a platform member on which to mount a separate camera. Components are provided for mounting the platform member on the base member to enable independent pivotal movement of the platform member about first and second mutually perpendicular tilting axes. A locking mechanism locks the platform member against pivotal movement about both of the tilting axes by operation of a single knob. Friction plates enhance locking, and the number and size of the friction plates may be adapted to cause locking about one tilting axis before the other. A quick release camera mount is included that enables convenient displacement ninety degrees.

Camera and other instrument support stand

Abstract: A camera supporting tripod (10) with a hip (18) to which legs (40, 42, 44) are attached. The legs (40, 42, 44) are adjustable as to length. In addition, the tripod (10) includes a center shaft (14) mounted to the hip (18) for tilting movement. Center shaft (14) is also adjustable as to length. Manually actuated hydraulic mechanisms are provided for releasably holding the legs (40, 42, 44) as to length, for releasably locking the center shaft (14) to the hip (18) to prevent relative tilting, and for releasably holding the shaft (14) at the length to which it is adjusted. An instrument supporting head (12) on the tripod (10) includes friction brake panning and tilting mechanisms designed to apply a variable drag to these motions and also for smooth operation.

Tripod type constant velocity joint

Abstract: A tripod type constant velocity joint which comprises: a housing including three grooves each of which has curved surfaces opposing each other in a circumferential direction; a shaft inserted into the housing; three trunnions mounted on the shaft and outwardly extending right-angled relative to an axis of the shaft; three rollers movably mounted on the three trunnions; and aligning member disposed between each of the three rollers and the curved surfaces of each of the three grooves; the aligning member being movable along the curved surfaces of the groove.

Stereoscopic camera slide bar

Abstract: The present invention relates to a stereoscopic/35 mm camera slide bar which allows for the precise positioning of just one SLR camera at each of two pre-set locations Individual slides are then taken in successive order using standard ASA slide film Compatible lens, ranging from zoom to wide angle, can be utilized to suit the occasion The unit basically consists of three horizontal bars situated one above the other The lower bar is used for mounting on a tripod and for holding a simple line level The middle bar holds the camera which is attached to a track-mounted sliding plate and the upper bar supports a strobe light The flash is secured at a location central to each camera positon The upper bar has the flexibility of vertical elevation so that the light can be accurately directed to the subject

Slidable-type homokinetic (universal) tripod joint

Abstract: A slidable-type homokinetic tripod joint includes an outer member formed with track grooves, a tripod member having three trunnions and mounted in the outer member with the trunnions on the tripod member received in the track grooves in the outer member, and a spherical roller rotatably mounted on each trunnion. Each track groove is formed at each side with a guide surface for the spherical roller. The spherical roller is kept in contact with the roller guide surface at two points. This decreases unbalanced load and the turning moment acting on the spherical roller and decreases the friction force causing vibration.

Camera supporting device

Abstract: A body of a camera supporting device according to the present invention is provided with a grip which is shaped so as to permit a one-handed hold, and which incorporates a trigger. A shoe mounting surface is formed on the top of the body, and a shoe is mounted rotatably and detachably on the mounting surface. The shoe is fitted with a camera screw. A ball is fixed on a fixed base which is mounted on a tripod, and is rotatably housed in a cylindrical ball case. The ball case and the body are connected to each other. The ball is held beween an edge of the ball case and a ball retainer by means of the urging force of a compression coil spring. The ball retainer can be moved away from the ball, by means of a link mechanism, by squeezing the trigger, thereby permitting orientation in all directions of a camera mounted on the shoe mounting surface. The camera is locked in position when the trigger is released.

Tiltable tripod attachment for a camera

Abstract: Three pivotally interconnected arms are pivotally and slidably connected to a frame which is slidably connected to a base. One of the arms supports a camera thereon. The arms are pivotal to the left and to the right to reformat a camera view from horizontal to vertical or vice versa. The base slides with respect to the frame to eliminate horizontal parallax error. Vertical parallax error can be compensated for by elevating the arm supporting the camera.

Camera platform for tripod mounting

Abstract: A camera platform for mounting a camera on a tripod, the platform incorporating means for leveling the camera and for directing the camera vertically or horizontally. Directional means comprises two pivots, one for pan and one for elevation, each incorporating controlled rotational resistance elements and push-button controlled power operated braking mechanisms, the push buttons being incorporated together with a shutter control button in a handgrip at the end of a control arm.

Close-up camera apparatus

Abstract: Apparatus for converting a camera for close-up photography, includes a flash hood attachment for the flash unit of the camera for reflectively spreading a beam of light from the flash unit to distribute the light over the field of view for very close subjects. Other attachments provide for reducing the light received by an auto-exposure system of a camera, for blocking a portion of a viewfinder window to correct for parallax problems, and for covering the lens of the camera with a pin hole to convert the camera to a fixed focus camera, all for converting a conventional camera for close-up photography.

Homokinetic universal joint

Abstract: A homokinetic tripod type universal joint including a tripod member having three trunnions, with a roller rotatably mounted on each trunnion is mounted in an outer member. The roller consists of an inside ring and an outside ring wherein contact is established between a spherical outer periphery of the inside ring and a cylindrical inner periphery of the outside ring. The outside ring is guided in a direction parallel with the axis of the outer member by guide surfaces provided internally of grooves formed on the outer member. This arrangement helps to reduce sliding resistance, temperature rise and vibrations due to induced thrust.

Constant velocity joint comprising an element carrying planar sliding surfaces

Abstract: Constant velocity joint comprising a first element carrying planar sliding surfaces formed by three pairs of planes 8a, 8b evenly angularly spaced about a first axis XX', in which the planes 8a, 8b of each pair are parallel to one another and to the first axis XX', a second element producing linear contacts evenly angularly spaced about a second axis YY' and intermediate elements 11 comprising planar surfaces parallel to the aforementioned planes 8a, 8b respectively, characterised in that rolling bodies are interposed between the planes 8a, 8b of the first element and linear contacts defined by the second element and in that the latter are formed along generatrices of rollers 2 mounted rotationally on journals 14 of a tripod carried by the second element.

Cable tripod spreader

Abstract: The legs of a tripod are held in support position against further spreading by a flexible cable that is unspooled from a spring biased drum. The spring bias will respool the cable when the tripod legs are collapsed. The drum is in a housing fixed on one of the tripod legs, and the housing includes a locking device for locking rotation of the drum so as to fix the effective length of the cable and thus hold the legs to the position set by the cable length.

Photographic information setting device for camera

Abstract: PURPOSE:To change shutter speeds in a short period by changing limit set values or the set values only in a range higher the limit set values when the 2nd photographic state is selected by a selecting means. CONSTITUTION:A selection switch 10 which constitutes the selecting means is provided to the camera body 12 of a camera bottom plate 8 nearby a tripod fitting screw 9. When the camera is fitted on a tripod, the selection switch 10 is energized all the time, so the 1st photographic state is selected automatically and shutter speeds from 1/4,000sec to 30sec and a valve and a time mode are all settable. When the camera is detached from the tripod and carried in a hand and the selection switch 10 is not operated, the 2nd photographic state is selected automatically. Then, shutter speeds are changed only within the range of shutter speed faster then 1/8sec and shutter speeds slower than 1/8sec and the valve and time modes are inhibited from being set.

Support for optical instruments

Abstract: 1. Tripod for optical equipment, comprising support elements (20), which are arranged next to one another in the axial direction on a central axis (42) and can be rotated about the central axis (42) between a rest position and a position of use, there being swivellably mounted on the support elements (20) tripod legs (12) which are arranged at least approximately parallel to the central axis (42) in the rest position, and lie in a plane, and can be spread away from the associated support elements (20) in the position of use, characterized in that all support elements (20) are constructed with different lengths in the radial direction of the central axis (42) and can be rotated about the central axis (42) in such a way that all support elements (20) are arranged on the same side of the central axis (42) in the rest position, and that each support element (20) has a sleeve-shaped element (22) and an arm (24) standing away from the sleeve-shaped element (22) for securing one tripod leg (12) each, the arms (24) of the support elements (20) having lengths such that the difference of the lengths of the arms (21) adjacent in the axial direction of the central axis (42) is matched to the cross-sectional dimensions of the tripod legs (12).

Multilayer Piezoelectric Actuators for Scanning Tunneling Microscope

Abstract: We report a new type of a three-dimensional (3D) mechanical translator, i.e., a double tripod which has two sets of 3D-scanning mechanisms in one tripod. For elements of the double tripod, we used multilayer piezoelectric actuators whose electrodes were cut into two parts with displacement/voltage constants with different orders of magnitude: A~1070 A/V and B~108 A/V. By measuring a series of STM images with the double tripod, we showed that the additional SD-scanning mechanism is useful as a 3D-positioner for a selection of the scan window.

Device for driving a lens unit having a tripod mount

Abstract: A drive mechanism for a lens unit with a tripod mount. The tripod mount is on a stationary cylinder while the camera mount is on a rotatable cylinder which contains a drive shaft for mechanically driving a lens axially movable along the stationary cylinder. A drive gear supported by the stationary cylinder causes the linear movement of lens by its rotation. A planetary gear system, coupled to the stationary cylinder connects the drive shaft and the drive gear.

Foldable and adjustable multi-purpose movable table

Abstract: The utility model belongs to a table product for daily life article, comprising a folding tabletop, a tabletop support frame, and an adjustable moving tripod. Thereby, the table of the utility model has the folding and adjustable functions. The tabletop support frame and the moving tripod can be put in the small case of the cuboid folded by the tabletop, and the table is very portable and brings very large convenience to the open air life.