Abstract: A gerotor mechanism is used to guide the rotation of a turntable having a Reuleaux triangle shape. In one version, the mechanism includes a gerotor having three lobes, and the gerotor guide has a guide profile including four recesses for receiving the lobes of the gerotor. Rotation is governed by a 4:3 hypocycloid function. The profiles of the gerotor and the gerotor guide are expanded uniformly from an original hypocycloid pattern so that rotation of the turntable results in execution of the hypocycloid function while retaining the gerotor in controlled contact with the profile of the gerotor guide. A reciprocal of the hypocycloid function yields a “cloverleaf” gerotor. Substantially planar bearing surfaces may be used at the interface of (a) the turntable and the gerotor guide, (b) the gerotor and the gerotor guide, or (c) the gerotor and the underlying support surface. The gerotor guide and turntable may be part of a cabinet or built into a kitchen countertop.

Abstract: A gerotor mechanism is used to guide the rotation of a turntable having a Reuleaux triangle shape. The mechanism includes a gerotor having three lobes; the gerotor guide has a guide profile including four recesses for receiving the lobes of the gerotor. Rotation is governed by a 4:3 hypocycloid function. The profiles of the gerotor and the gerotor guide are expanded uniformly from an original hypocycloid pattern so that rotation of the turntable results in execution of the hypocycloid function while retaining the gerotor in controlled contact with the profile of the gerotor guide. Substantially planar bearing surfaces may be used at the interface of (a) the turntable and the gerotor guide, (b) the gerotor and the gerotor guide, or (c) the gerotor and the underlying support surface. The gerotor guide may be part of a cabinet or built into a kitchen countertop.

Abstract: Mono and diallyl amines are silylated to protect them from reacting with high activity Ziegler-Natta catalysts so they may be copolymerized with propylene; also disclosed are copolymers of such amines with propylene and their hydrolyzed or alcoholyzed counterparts.

Abstract: Mono and diallyl amines are silylated to protect them from reacting with high activity Ziegler-Natta catalysts so they may be copolymerized with propylene; copolymers of such amines with propylene and their hydrolyzed or alcholyzed counterparts; also the amine monomers disclosed.

Abstract: Mono and diallyl amines are silylated to protect them from reacting with high activity Ziegler-Natta catalysts so they may be copolymerized with propylene; copolymers of such amines with propylene and their hydrolyzed or alcholyzed counterparts; also the amine monomers disclosed.

Abstract: A shelf arrangement is disclosed for a corner cabinet, particularly for a built-in cabinet such as is commonly used in kitchens. The shelf is shaped as a closed curve of constant width, preferably triangular. The shelf turns in the confines of a square-shaped corner cabinet space; a corner of the shelf will protrude through a 45.degree. or 90.degree. corner door for accessibility and is recessed when the door is closed. The shelf may rest on a track forming a kinematic path for the rotation of the shelf such as around the inside periphery of the cabinet or may be mounted on a central post or other support means with a gear or rotor system of special design to facilitate turning.