Abstract: A wheel thruster for converting rotary motion to a unidirectional thrust resulting from an unbalance of centrifugal force produced by air or steam pressure and rotation of weights about an axis, comprising a housing, a rotatable wheel within the housing, the rotatable wheel mounted on a shaft for rotation about a common axis, a plurality of weights connected to the wheel; a plurality of bearings located between the shaft and the wheel; the shaft being powered by a motor; and, a means for supply air or steam pressure, which pressure is distributed within the housing producing ambient pressure to the rotating wheel.

Abstract: A muffin holder and safety guard comprising a box-like member having an open end and dimensioned to receive a muffin separator therein. The holder and safety guard further includes means for releasably holding a muffin or like bakery product within the holder. When a muffin separator is inserted into the box-like member the muffin is impaled on prongs of the muffin separator, and when the muffin separator is withdrawn from the box-like member the muffin is released for subsequent separation.