This invention relates to devices and methods for installing ceilings made from tiles that are supported by a suspension grid that is not visible from the underside of the ceiling. One embodiment comprises channels that form the suspension grid, channel wall supports for supporting the grid where the ceiling abuts the walls, and hangers that are capable of establishing the ceiling level as well as supporting the suspension grid in its mid-span regions. Another embodiment comprises a method of in...

Disclosed herein an electroluminescent device for converting an energy of an electric field applied directly to a light energy and capable of producing surface luminescent for a large area different from conventional incandescent lamps, fluorescent lamps or light emitting diodes.

Angling devices are disclosed having improved resistance to becoming hung up on brush and the like. Included is a hook having an elongated shank portion, a generally U-shaped portion extending outwardly from a lower portion of said shank portion, and first and second spaced apart eyelets conencted to said hook. Rigs making use of such hooks are also disclosed. In addition an angling device is disclosed which includes (1) a relatively inflexible rod having a length of at least about 1 foot and (2...

A robot device, preferably in the form of a walking robot 1 comprises a chassis 3 and a plurality of articulated legs 7, each leg 7 comprising an upper leg 10 rotatively and pivotally mounted on the chassis 3 and extending generally upwards therefrom, a lower leg 11 pivotally coupled to the upper leg 10 and a gripper foot 9 mounted on the lower leg 11, the gripper foot 9 being generally lower than the chassis 3, control of the articulated leg 7 being derived from three double acting pneumatic ac...

This invention relates to acrylic polymers and more specifically to polyalamides and polyacrylates such as poly{2-[(N-2-methyl-5-nitrophenylamino)ethyl acrylate]} and poly[(N-2-methyl-4-nitrophenyl)acrylamide]. These acrylic polymers are particularly useful as nonlinear optical components in various electrical devices for processing optical amplifiers, generators, computational devices and the like.

Disclosed are osteogenic devices comprising a matrix containing substantially pure mammalian osteogenic protein and methods of inducing endochondral bone growth in mammals. A partial amino acid sequence, amino acid composition, solubility properties, and various other data characterizing osteogenic protein are also disclosed, as well as a nucleic acid sequences encoding a consensus osteogenic protein.

A pair of exercise devices for respectively performing the "curl" and "fly" exercise. Each device utilizes a clamping assembly for receiving a range of user selectable free weights therein. Each clamping assembly is associated with a support assembly for the lower arm of the user. Upon the user grouping a handle the "curl" and "fly" exercises are performed with the clamped weight of the respective devices offering resistance thereto.

A driving member for a diaphragm in acoustic devices includes a body with opposite recesses into which driving rods are inserted. One end of the driving rods is attached to pressure rods which directly influence the diaphragm and the other end of the driving rods makes contact with the bottom of the recesses.

An accessory for an injection device comprises a protective sleeve 1 for surrounding the needle 2 and has inner and outer sleeve parts 3, 5 which are movable relative to one another from a contracted position, in which the point of the needle projects from the sleeve to enable an injection to be effected, to an extended position, in which the point of the needle is shielded by the sleeve. The sleeve parts 3, 5 are guided relative to one another by a projection on the inner sleeve part 3 engaging...

A pair of exercise devices for respectively performing the "curl" and "fly" exercise. Each device utilizes a clamping assembly for receiving a range of user selectable free weights therein. Each clamping assembly is associated with a support assembly for the lower arm of the user. Upon the user grouping a handle the "curl" and "fly" exercises are performed with the clamped weight of the respective devices offering resistance thereto.