Abstract: A counterbalance mechanism is disclosed for offsetting the normal gravitational forces exerted on a rotatable cylindrical hood for an incubator. The mechanism includes a specially shaped cam that is fixed with respect to the rotatable hood. A cam follower, mounted on a slide movable with the rotatable hood, is spring biased against the cam. As the rotatable hood is moved to various positions, the spring loading and cam profile coact to produce a counter-rotational force that is opposite and equal to the force of gravity acting upon the hood at any point in its rotation. One or more detents is provided in the cam at predetermined positions such that the cam follower can be positioned within one of the detents at one or more desired positions of hood rotation such that the hood may be held at that selected position.

Abstract: A food serving container including a base supporting a container bowl and a cover for the bowl. The bowl is supported in fixed position while the cover is pivotally supported so that it may be rocked alternately to open and closed positions. In open position the cover is underposed and when closed the cover is superposed in relation to the bowl.

Abstract: A compass hood construction is disclosed capable of closing entirely the face of a compass yet also providing higher viewing angles than is usually possible with available hood constructions. An outer stationary hood segment frictionally engages an annular flange in which the compass is mounted. Mounted within the hood segment are inner and outer hood sectors which are pivotally pinned to the stationary hood segment. The inner hood sector includes a tongue which engages a groove in the interior wall of the outer hood sector. When fully opened, the hood is defined essentially by the stationary hood segment. When fully extended, the inner and outer hood sectors form a hemispherical enclosure with the hood segment, completely enclosing the compass face.

Abstract: An aerosol inhalation device comprising an elongated chamber, an outer chamber part of which has an outlet opening and is telescopically displaceable over an inner chamber part which is connectable to an aerosol dispenser and provided with a flexible tongue which on telescoping the device together closes the outlet opening.

Abstract: An apparatus for carrying, stacking and transporting bowling balls. A housing of suitable size for holding a bowling ball incorporates interlocking members on the top and bottom surfaces thereof. A substantially square or rectangular member depends from the top surface of the housing, the member adapted to receive and be vertically interlocked with a mating member depending from the bottom surface of a like housing. Innerconnection of the mating members, one to the other, will permit vertical stacking of the housings or cases and prevent inadvertent vertical movement thereof. Each housing is equipped with an internally moveable cover to secure the bowling ball within the housing, the cover binding the ball between the interior walls of the housing and the covering member itself.

Abstract: This invention relates to a pivotal closure for a container. The closure structure includes a collar defining an opening, and associated with the opening is a lid mounted for rotation about an axis generally coaxial with this opening. This lid is further mounted for pivoting about an axis normal to the axis of rotation between a closed position in which the lid closes the opening and an open position in which an aperture defined by the lid and/or the collar allows access through the opening. The rotation of the lid is governed by a cam mechanism operable by pivoting movement of the lid. The can mechanism is, generally, a saw-tooth cam surface associated with either the collar or the lid and a cam follower associated with either the collar or the lid, so that pivoting the lid from a closed position through an open position and back to a closed position causes the lid to rotate about the axis of the opening by an amount determined by the cam surface.

Abstract: A sealing plug assembly for closing and sealing a cylindrical tubular member, such as an oil fill tube for an internal combustion engine, including a frustum-shaped sealing plug, a support member supporting the sealing plug for complete insertion into the tubular member, a cap member supported by the support member for closing the end of the tubular member and for limiting the amount of travel of the sealing plug into the tubular member, the cap member being spaced apart from the sealing plug, and a device for squarely locating the sealing plug in the tubular member, the locating device including a plurality of spring arms supported by the support member for engaging the walls of the tubular member.

Abstract: A game board upon which a game is played with flat discs or chips is provided with at least one integrally formed pocket therein for storing the chips and a cover pivotally mounted on the end wall of the groove and movable below the pocket through a slit in the board.

Abstract: A rotatable barrel for the surface treatment of particulate matter enclosed therein including a generally round perforated barrel with end elements. An opening is provided in the side for the insertion and discharge of particulate matter and a door for opening and closing said opening is mounted on lever arms to swing in an arc between open and closed positions. The lever arms are mounted on hubs extending from the ends of the barrel along its axis of rotation and are mechanically, rigidly attached to gears spaced from the ends of the barrel. A limitation is placed on the arc through which the door may swing relative to the barrel; stop means are provided both adjacent one edge of the opening and remote from the other edge of the opening whereby the door may swing into closed position in abutment with the one stop means adjacent the opening and may swing completely out of the opening into engagement with the other stop means.