A control mechanism for moving switch points on a railroad track, having a drive screw driven by a motor, a traveling block moving along the drive screw to position the switch points, an end stop on the drive screw for limiting movement of the traveling block, a hand crank for manually turning the drive screw, and a torque limiting clutch on the hand crank.

Detachable bottle and food holding subtrays, clips and support attachments for juvenile chairs such as highchairs, strollers, booster chairs, car seats and activity chairs. The clips can be a snapable C-shape, use a screwable post or a spring biased post for attachment to an existing tray. Removable lids and removable bottle sizing rings can be used. Pre-attached clips can be pre-molded directly to the existing tray. Alternatively, clips can be attached by hook and loop fasteners or peel and sti...

Improvements to personal vehicles including self-propelled and balancing personal vehicles. Ready detachability of a seat, footrest, seat back, control unit, wheels and caster assembly is provided using quick disconnect mechanisms.

The invention is embodied in a heavy duty drill bit for hard/soft rock drilling comprising a high fatigue-resistant, high alloy steel bit body having a PCD cutter member and an enlarged shank portion constructed to accommodate torsional forces at high thrust pressures, and reamer means for compensating the effect of bore hole rifling. The invention further involves the method of forming a roof bolting matrix in extremely hard rock formations having a compression strength up to about 50,000 psi u...

A food packaging material that has a plurality of porous polymeric beads impregnated with an anti-oxidant, or oxygen scavenger compound.

A container (1), such as a yogurt or cream pot, is of tube-like form with a side wall of circular cross-section tapering towards the base (2) from an open mouth (3). The base and mouth comprise opposite ends of the container. A flange plate (4) surrounds the open mouth (3) and is provided with sockets in the form of through holes (5) punched through each of the four corners. The base (2) of the container has a central cruciform projection (6) and in the angles between each pair of arms of the cr...

A prehensor is provided comprising embodiments of a variable mechanical advantage mechanism, the prehensor including a first mechanical advantage for sizing an object, and a second mechanical advantage for gripping the object. Embodiments of the variable mechanical advantage mechanism include a brake assembly and multiple embodiments of a brakeless assembly. Additionally, multiple embodiments of a selectable voluntary opening/voluntary closing mechanism are provided, whereby a single prehensor c...

An improvement is disclosed over conventional internal sizing of stock furnish for papermaking, wherein alum is added to the thick paper stock and the long retention time permits complete reaction with the fibers. The invention process permits successfully adding novel aluminum rosinate size composition unconventionally in thin stock furnish, where retention times are on the order of less that 1 minute. The highly charged aluminum rosinate size is able to be quickly adsorbed onto the fiber surfa...

A mobile trailer having an easily raisable and lowerable ground engaging scraper/leveler planar type plate that a single user can raise and lower by a lever arm. Various spring type members allow for the plate to be easily moved upward and downward, and the plate can be locked in a raised position. The trailer can be easily towed behind small tractors and all terrain vehicles(ATVs). Another embodiment allows the plate to be easily raised and lowered by a single arm having one end pivotally attac...

An exemplary implementation of the invention is a process for forming passivation protection on a semiconductor assembly by the steps of: forming a layer of oxide over patterned metal lines having sidewalls; forming a first passivation layer of silicon nitride over the layer of oxide such that the first passivation layer of silicon nitride resides along the sidewalls of metal lines and pinches off a gap between the metal lines; performing a facet etch to remove material from the edges of the fir...