A forward draw holster having a body closed at the rear and lower end and open at the front, a U-shaped spring having its arms enclosed in pockets in the body, the lower portions of said pockets being rearwardly curved, the lower portion of the spring being similarly curved and enclosed in the curved portions of said pockets, the bight at the lower end of the spring spanning the pistol-accommodating space between the opposite sides of the holster body and provided with a non-metallic element res...

In a missile, a small ramp structure is installed forward of each aerodync control fin to deflect reduce air and particle flow away from the gap between the missile body and a control fin therefor.

A demagnetization circuit for use with a forward converter includes a drive winding magnetically coupled to the primary winding of the forward converter, a capacitor for absorbing leakage and magnetization energies from the primary winding when the forward converter is switched off, an inductor for absorbing energy from the capacitor, and a switching circuit for selectively connecting the inductor to the input voltage source of the forward converter.

The milling cutter with a feeding motion in forward and reverse mills plane surfaces of large diameter in the area of through holes and consists of a tool head 17 which can be driven in rotation by a shank 17 and in which are mounted two cutting parts so as to be radially movable and lockable in seating slots. The cutting parts are shifted by means of a rocker which is disposed so as to be rotatable about the longitudinal axis of the tool and whose steering bolts attached to its face and pointin...

In a gravity-feed shelf having an endless flexible conveyor belt supporting a plurality of articles arranged in a column and automatically feeding the articles in said column forward in a columnwise direction when the foremost article in the column is removed, brake means are located at a position underneath said conveyor belt and responsive to the presence of an article on said belt and above said position, for stopping the movement of said belt.

Forward and reverse rotary tool, particularly for inserting and retracting a threaded element. The power-driven tool is designed primarily for surgical use and is capable of applying pressure against the free end of the threaded element during both the inserting and retracting operation, as into a bone. The shift from a driving mode to a retracting mode, or vice versa, is readily effected under conditions existing in an operating room. All movable and/or lubricated parts, other than the driven e...

A latch for supporting in a releasable manner the forward edge of the removable sunroof panel is disclosed. A frame extending around an opening in a vehicle roof has a resilient molding adapted to support the perimeter of a curve latch panel to close off the opening. The forward edge support comprises a pair of releasing bayonets attached in spaced relationships to the underside of the forward edge of the panel. A two part releasable fastener for the rear edge of the panel is movable from a firs...

A high-precision amplifier employs a feed-forward technique to provide a first order correction of amplifier distortion. A second amplifier is utilized to sense the base-to-emitter distortion of a main amplifier and develop an error output which is injected into an output node to provide cancellation of distortion from the output of the main amplifier. The feed-forward distortion-correction technique is particularly applicable to high-precision wideband differential amplifiers; however, the tech...

A power transmission which includes a drive pulley and multiple driven pulleys which accommodate forward and reverse drive belts. The driven pulleys are mounted to pivoting carriages which allow relative shifting between forward and reverse and biasing springs which urge the carriages into neutral upon release of the shift lever. A clutch wheel attached to one of the driven pulleys provides for a smooth transition from neutral into forward.

A helicopter having the usual tiltable, vertical thrust and lift producing rotor, a separate forward thrust producing propeller as well as provisions for yaw control and compensation is improved in that the propeller is constructed as unshrouded propulsion device. A pair of flow deflecting rudders is arranged downstream from the propeller and symmetrically to both sides of the craft; a frame on the tail portion of the craft includes vertical shafts for pivotally mounting the rudders. A T shaped ...