| 摘要 |
A safety razor blade unit has a guard (2), a cap (3) and three parallel blades (11, 12, 13) mounted between the guard and cap, at least one of the blades, guard and cap being movable from an at rest (non-shaving) position to modify a blade exposure dimension to attain a target blade geometry, at which shaving is initiated, in which the exposure of the first blade (11) is not greater than zero and the exposure of the third blade (13) is not less than zero. At least one of the cap (3) and guard (2) can be movable against the force of a spring (21 or 20) from an at rest position in which all the blades between the guard and cap have their cutting edges disposed below a plane tangential to the skin contacting surfaces of the guard and cap. The blades can be independently sprung or carried for movement in unison on a carrier pivotally mounted in a frame of the blade unit.
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