Abstract: A latch device for a hinged door including a resiliently flexible latch bar secured to the door and having a free portion extending along the inside of the door to an end portion, near the door edge, which engages a catch by means of the bending and straightening of the latch bar. Preferred embodiments include a stop bar similar to the latch bar, but extending beyond the opposite door edge to engage another catch to hold the door open. The latch and stop bars are preferably a single bar with two free portions at its opposite ends. The catches have bearing surfaces which distort the bar as the door swings to prepare it to snap into locking engagement with the catches. Access to the latch bar, to allow unlatching, is provided through the door.

Abstract: An improved rotary-action directional flow control valve for hydraulic hydraulic motors and the like. The valve provides pressure-compensating constant flow in one or both directions. The valve has a main spool rotatable within a valve body to plural positions to determine flow direction, and one or more inner spools or the like in cavities within the main spool to provide the pressure-compensating. A plurality of spool voids and orifices form, with the valve body, flow channels between ports in the valve body.

Abstract: An improved boom-supportable device for lifting large rocks, broken concrete or asphalt pieces, and the like from the ground without particulates. The invention includes a generally upright frame member having a lower edge, a shelf-like member extending laterally from the frame lower edge to a distal end and defining substantial voids, and devices removably attaching the shelf-like member to the frame lower edge selectively in either a forward position or a rearward position. The shelf-like member preferably has a plurality of elongated parallel teeth spaced along the lower edge. The teeth are most preferably separate, each individually attached to the lower edge.

Abstract: An improved tractor battery enclosure of the type having a service opening, including walls forming an enclosure, a suspended battery-support floor approximating the size of a battery base and movable between a battery use position and an at least partially offset position, and a door along the lead edge of the floor movable between a closed position and an open position coplanar with the floor, such that a battery may readily be moved with the floor and then along the floor to a full service position in which it is at least partially supported by the door.

Abstract: A drain-cleaning implement having a plastic shell of two subshells snapped together using male and female mating means along abutting edges and having a snake coiled within the shell and exerting outward mating force on it. The male means are on projections extending from inwardly-projecting sidewall portions formed at intervals around the inside surface of one subshell, and such inside surface has substantially edge-free transitions between the inwardly-projecting portions and positions therebetween to strengthen the shell with maximum mating force from the snake. Preferred embodiments have corner-free mating means. A stop ledge facilitates proper mounting of a rotatable handle.