A programmable logic device (10) has a number of programmable logic elements (LES) (12) which are grouped together in a plurality of logic array blocks (LABs) (14). An LAB incorporates one or more wide-input AND gates (74) for selectively combining the outputs of any number of LEs and producing a signal that is a logical combination of any number of its LEs. In variations of the invention, input signals may be selectively coupled to an AND gate by means of an OR gate (78) and may be selectively ...

A wide tape drive for use with a wide tape holder having a frame with an open top and an open bottom non-permanently closed with a top cover and a bottom cover, releasably held together and releasably held to the frame by snap connections respectively disposed at lateral sides of the holder, the wide tape holder containing two tape hubs rotatably mounted therein proceeding substantially parallel to the lateral sides of the frame, has a base plate with two guides projecting substantially perpendi...

Telescoping tubes are added to the left and right front posts of a wheelchair for cooperation with the front post slides normally received in the front posts to permit greater telescopic extension of the slides from the front posts when the wheelchair is folded. With such arrangement, a wider seat may be applied to a conventional wheelchair, the addition of the telescoping arrangement not requiring any major alteration of the basic components making up the wheelchair. Each telescoping arrangemen...

A radio frequency antenna structure is disclosed wherein a raised pedestal portion of the ground plane surface is provided and above which pedestal portion a microstrip radiator is disposed. The microstrip radiator is thus disposed on a pedestal at a predetermined distance above the base ground plane to produce mirror image or apparent radiating aperture(s) therebelow. The combined radiation pattern from the real radiating aperture(s) and the mirrored image(s) thereof produces an increase in rad...

Suspension system for wide seats having a rigid occupant supporting member has a pair of parallel, rotatable drums mounted to a rigid portion of a vehicle at a fixed horizontal distance from each other. A plurality of flexible web or cable support members attached to each of said pair of drums are attached to vertically spaced attachment points on the adjacent rigid occupant supporting member portion of the suspended seat and insure that the seat moves up or down as the drums rotate. Those flexi...

This disclosure relates to a Wide Angle Lens of the retrofocus type having a new lens group arrangement which comprises from the object end to the image end a first negative group, a second negative group in the form of a meniscus having a concave image side surface, a third positive group having a convex object side surface, a fourth positive group having a convex image side surface, a fifth negative group, and a sixth positive group having convex image and object side surfaces.

An improvement for use with an automatic print cutter mechanism which is actuated by sensing control indicia positioned along a continuous strip of photographic prints, said improvement comprising a wide scanning angle sensor capable of detecting said indicia of numerous configurations when same are misaligned with respect to the center line of said sensor and means for independent lateral and transverse adjustment of said sensor.

A spectrophotometer includes an illumination section for illuminating a test sample, and a spectrometer portion for receiving light from a test sample and measuring the radiant energy thereof as a function of wavelength. The spectrometer includes an entrance slit and two stationary gratings for dispersing light admitted through the slit into two separate dispersed beams or spectra. The separate beams are focused upon linear arrays of photodiodes providing outputs proportional to the intensity of...

A wide angle photographic lens system comprises, in the order from the object side, a first lens component which is a positive lens having its more convex surface facing the object side, a second lens component which is a negative meniscus lens having its convex surface facing the object side, a third lens component which is a biconvex lens having its more convex surface facing the object side, a diaphragm, a fourth lens component which is a biconcave lens, a fifth lens component which is a posi...

A wide angle radiant energy detection apparatus arranged as a catadioptric assegrainian telescope having a plane secondary mirror is disclosed which utilizes a correcting lens as a structural support for the secondary mirror to reduce losses caused by mirror support structure vignetting. Angular resolution at wide field angles is increased by lenses which reduce oblique spherical aberation, spherical aberation, and coma, and by the more uniform energy distribution across the image field caused b...