Abstract: A relatively thin, stiff, flat guide line holder or “trig” for accurately supporting and positioning intermediate portions of tautly stretched guide lines such as are used by bricklayers and stone masons in laying courses of bricks, blocks and stones during the erection of masonry walls has a centrally located body portion, and an integrally formed, forwardly projecting guide line support portion. During use, the body portion is positioned atop a flat surface of a wall being erected to support the line holder at a desired height to be met by masonry elements added to the wall, with the support portion projecting forwardly beyond a front surface plane of the wall being erected. Passage formations defined by the support portion open downwardly through a bottom surface of the support portion at two spaced locations along the front surface plane when the line holder is properly positioned.

Abstract: Locks for luggage, travelcases, briefcases and the like that can be operated by setting a combination or by using a key include an indicator to provide a signal in response to use of the key. The locks retain relatively movable components in latched engagement when locked, and permit relative movement of the components when unlocked. In some embodiments, the indicator provides a visual signal if an associated travelcase has been opened for inspection by unlocking the associated lock using a key; and, in some embodiments, the indicator can be reset upon entry of a proper combination.

Abstract: A push button actuator unit has a housing that defines a passage extending along an axis. A push button assembly has components movable in the passage including a forwardly-biased push button at the front of the housing that is movable along and turnable about the axis. Two independently movable operating elements at the rear of the housing move differently in response to depression of the push button when the push button is turned to different orientations about the axis. The rear operating elements may extend concentrically along the axis, and the unit may be lockable to permit and prevent some operating element movement. The operating elements may be used to selectively disengage, or to engage and move a variety of auxiliary devices situated behind the unit. The unit may provide enhanced resistance to defeat by hammering than has been offered by a known form of push button unit.

Abstract: A heatable hose (1), in particular a respiration hose, having a flexible hose wall (4), shall guarantee through its design that a contact of the electric conductors or heating wires (14, 16) accommodated in the hose (1) and, thus, a short circuit, is excluded. For this purpose, the hose (1) is equipped with a plurality of reinforcing ribs (8, 12, 20, 22), each of which winds around the hose wall (4) in the manner of a helical line and which form together a multiple-threaded helical line, at least two reinforcing ribs (8, 12) being provided, each of which encloses a heating wire (14, 16) designed for heating the hose. Each heating wire (14, 16) is preferably a single-conductor wire.

Abstract: A handle and housing assembly has a graspable handle turnable about a principal axis relative to a housing, structure extending from the handle along the principal axis through an opening defined by the housing, and a seal that turns with the handle and defines a thin annular skirt of resilient material extending about the principal axis and pressed substantially flatly into engagement with an annular portion of the housing extending substantially concentrically about the opening. In some embodiments, the structure includes a shaft that extends from the handle through a spacer that is encircled by the skirted seal; in some embodiments, an O-ring is interposed between the handle and the spacer; and, in some embodiments, a rear part of the spacer extends into the housing opening to facilitate smooth turning of the handle and the spacer about the principal axis.

Abstract: In one form of the invention, a deployment control for releasing a rocket recovery device such as a parachute includes an electrical heating element extensible along a heat-severable reach of an elongate retainer capable of being wrapped closely about the recovery device to retain the recovery device in a compact form until the reach is severed as the result of electricity being supplied to the heating element to thereby release and deploy the recovery device. In other forms, an apparatus for cutting a heat meltable retainer to release and deploy a rocket recovery device includes a heating element extending along at least a short reach of the retainer, and a control device for supplying electricity to the heating element for heat severing the retainer reach.