Abstract: The present invention relates to an improved hole-saw assembly and in particular, to a mandrel engageable by a drill and including at least one locking ring or annulus that allows for the base of two hole-saws of different diameter to be quickly and easily mountable and demountable from the mandrel. The hole-saw assembly includes a first hole-saw having a base that includes a pair of drive-pins extending outwardly therefrom and a pair of apertures for insertion therethrough of the drive pins of a second hole-saw. The drive pin pairs are then inserted through corresponding apertures in the mandrel to engage an annulus coupled to the mandrel. The present invention provides for each drive pin to be engaged by the annulus despite the difference in longitudinal length of the drive pins beyond the base of the first hole-saw. The hole-saws are snap-fit within the annulus and may be disengaged by simply rotating the annulus to a second position.

Abstract: A laser line generator having a laser diode, or other laser source, emits a laser which is passed through an aspherical lens to create a two-dimensional fan-shaped light sheet. This light sheet is reflected off a flat mirror to expand the width of the light sheet without increasing the size required by the optical path. The light sheet is then reflected by parabolic mirror to create a straight, planar light sheet.

Abstract: A deadlocking assembly for use in locks that includes a rack supporting a bolt and a driving or pinion gear that drives the rack. Both the rack and the pinion gear have teeth that intermesh. The pinion gear further includes two arms, one of which acts as a stop when extending the bolt and the other that acts as a deadlock. When in the deadlocked position, forcing of the bolt is prevented by the other arm since the pinion gear teeth and the rack gear teeth at that position do not intermesh. A tab is further used to limit further rotation of the pinion gear.

Abstract: The present invention relates to a lock arrangement having a lock (14) and including a first locking device (52) adapted to operate the lock to lock and unlock the lock. A second locking device (68) includes a member (32) moveable between a first and a second position wherein when the member (32) is in the first position the lock is locked and when in the second position the lock is unlocked. Generally the first locking device (52) is key operated and the second locking device (68) is driven by an electric motor (72). The first locking device (52) can operate the lock independently of the member (32) and regardless of its position and when used to lock or unlock the lock can decouple through a clutch mechanism (80) the second locking device (68) from controlling the lock.

Abstract: A large profile, high speed laser micrometer is formed from a light source unit comprised of a plurality of emitter modules that combine to emit a laser sheet and a detector array comprised of a plurality of detector modules. The laser micrometer also includes a data processing unit. Each of the emitter modules is aligned with a corresponding detector module such that an object passing between the light source unit and the detector array can be measured to an accuracy of at least 4/100ths of an inch.

Abstract: A method for measuring the range to multiple points on a surface by projecting a line of light onto the surface, imaging said line of light onto an XY photodetector array at an oblique angle, reading out the array one line at a time, computing the centroid of said line of light on each Y line across X columns as each line is read out of the array in onboard FPGA (Field Programmable Gate Array) or similar real time logic, computing quality factors for each computed centroid and encoding this as one or more bits in the centroid value, transmitting said tagged centroid to a local or remote data receiver, and computing the range to the surface for each point corresponding to each centroid using a previous calibration step.

Abstract: A hole saw assembly including a boss adapted to hold a hole saw and having a plurality of connecting shafts. The shafts rotationally engage a driving means and longitudinally engage a locking member that locks the boss, driving means and the locking member together. This is achieved by the driving means and the locking member having co-axially aligned cutouts allowing for the insertion of the shafts. The locking member is moveable between two positions in one the cutouts engaging the shafts and in the other allowing for free longitudinal movement of the shafts.

Abstract: The present invention relates to a lock arrangement having a lock (14) and including a first locking means (52) adapted to operate said lock to lock and unlock said lock and a second locking means (68) including a member (32) movable between a first and a second position wherein when said member (32) is in the first position the lock is locked and when in said second position the lock is unlocked. Generally the first locking means (52) is key operated and the second locking means (68) is driven by an electric motor(72). The first locking means (52) can operate said lock independently of said member (32) and regardless of its position and when used to lock or unlock the lock can decouple through a clutch mechanism (80) the second activation means (68) form controlling the lock.

Abstract: A large profile, high speed laser micrometer is formed from a light source unit comprised of a plurality of emitter modules that combine to emit a laser sheet and a detector array comprised of a plurality of detector modules. The laser micrometer also includes a data processing unit. Each of the emitter modules is aligned with a corresponding detector module such that an object passing between the light source unit and the detector array can be measured to an accuracy of at least 4/100ths of an inch.

Abstract: A three-dimensional coordinate measuring system which includes first and second towers, first and second viewing devices mounted on the first and second towers, respectively, and a pair of targets mounted on each of the first and second towers a known distance apart. A tilt sensor is mounted on each of the first and second towers to measure the angle of each of the first and second towers with vertical and a host computer is coupled to each of the viewing devices and is programmed to perform photogrammetric algorithms so as to compute the coordinates of unknown points.

Abstract: An apparatus for cutting perforations in sheet material with a laser which includes a laser and servo motor controlled rotatable mirrors for focussing and directing a laser beam from the laser onto the sheet material so as to cut a perforation therein. An arm mounts the mirrors for movement of the beam from one perforating position to another. The laser is also shut off when moving from one perforation position to another. A perforation pattern is thus produced over a selected portion of the sheet.

Abstract: An apparatus for projecting a laser beam at an angle to an axis and sweeping the laser beam around the axis around a conical surface having a selected slope is described. The apparatus may be used to aid in the alignment of structures having conical surfaces. The apparatus projects a laser beam along an axis onto a rotating deflection assembly. The deflection assembly contains two mirrors which are optically equivalent to the reflective faces of a pentaprism. Consequently, the angle of the deflected beam is relatively insensitive to vibrations of the deflection assembly. The angle of the deflected beam may be varied by tilting the two mirrors. The alignment of the mirrors is maintained as the mirrors are tilted by a linkage which includes a roller mounted to one of the mirrors which rides on a cam surface coupled to the other mirror. The adjustable mirror-alignment linkage may be used in other optical equipment.

Abstract: An image transferring device which consists of a light source transmitter for transmitting a collimated light beam, a light reflector positioned to intercept the collimated light beam, a motor for rotating the light reflector, a film positioned at the focal point of the light reflected from the mirror; an imaging lens mounted so as to rotate with the mirror and to focus the light beam onto film, and a motor and lead screw for advancing the mirror in a direction along its axis of rotation so that the light beam traverses an image portion of the film.