| 摘要 |
Several single-head bi-directional razor devices and systems are disclosed. Each has a narrow, elongated bi-directional razor head attached or attachable to a transversely extending hand grip. The razor head may be constructed as a disposable cartridge if desired. Two pairs of narrow, razor blade strips are positioned within the head, with one pair of blades extending in one direction and the other pair generally extending in an opposite direction. Both sets of blades extend along the length of the head. The user may move the razor head in one direction for contacting one pair of blades against the user's skin for cutting hair and then, without lifting or tilting or repositioning the hand grip, move the handle in the opposite direction so that the other pair of blades cuts hair during reverse movement of the razor. In other words, the head remains engaged upon the skin for cutting hair in both directions. In some embodiments, the razor head is rigidly attached to the handle. In other embodiments, the head may move relative to the handle upon pivots or shell bearings. Several different constructions and classes of assembled bi-directional razor head structures are disclosed. They differ from one another in terms of shape or size of the head, and in the way the blade strips are captured, held and oriented within the head. The heads may be molded or assembled structures.
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