Abstract: Hair cutting apparatus having at least one cutting unit (2) with a stationary cutting member (3) and reciprocable movable cutting member (4) each having cooperating bearing surfaces (7,8) with cutting edges (9,10). To minimize the friction between the bearing surfaces, means (16) with visco-elastic properties are provided between the coupling element (14) and the movable cutting member (4) resulting in a small cutting gap between the bearing surfaces. During cutting of hairs the means with visco-elastic properties behave as a stiff element whereas during periods in which no hairs are cut these means behave relatively soft so that the cutting gaps between the cutting edges are closed.

Abstract: Shaving apparatus with cutting members (3, 5) which are movable relative to one another other and are each provided with a row of substantially V-shaped teeth (4, 6) having edges (7, 8), a cutting opening (9?, 9?) between each pair of cooperating teeth (4, 6) for catching hairs, said cutting opening having a shearing angle between 1° and 30°, wherein the cutting openings (9?, 9?) are not completely closed during operation of the shaving apparatus.

Abstract: Shaving apparatus with at least one cutting unit (3) having an outer cutter (4) and an inner cutter (6) which is rotationally drivable with respect to the outer cutter by means of an driving shaft (18) of a driving device, which driving shaft exerts a prestress force (FY) on the inner cutter in the direction of the outer cutter. During cutting of a hair, the hair exerts a cutting force (FR) on the inner cutter (6), which force has a direction that is opposite to the driving force (FD) for driving the inner cutter.