A cutter system for an electric shaver and/or trimmer, having a pair of cooperating cutting elements with two rows of comb-like cutting teeth at opposite edges thereof and at least one field of cutting perforations between the rows of comb-like cutting teeth. The cutting elements are movably supported relative to each other by a support structure with an inner one of the cutting elements being sandwiched between an outer one the cutting element and the support structure. The support structure includes a pair of outer frame portions and a pair of inner frame portions supporting the inner cutting element. The inner frame portions form rigid support ribs extending from a base portion of the support structure at a steeper angle than the outer frame portions and forming rigid support edges supporting the inner cutting element along the outer edge of the field of cutting perforations.

A pad assembly is described that retains a blade assembly or set to the body of a hair cutter. The pad assembly reduces random forces generated by the blade assembly and ensures an accurate and repeatable tension is maintained between the inner and outer blades of the blade assembly. The pad assembly acts as an intermediary between the blade assembly and the body of the hair clippers to reduce challenges associated with fasteners directly attaching the blade assembly to the body of the clipper.

A method of manufacturing a blade set (20) of a hair cutting appliance (10) includes forming a stationary blade (22). The stationary blade (22) comprises a first wall portion (100) arranged to serve as a skin facing wall when in operation, a second wall portion (102) at least partially offset from the first wall portion (100), such that the first wall portion (100) and the second wall portion (102) define therebetween a guide slot (96) arranged to receive a movable cutter blade (24), an intermediate wall portion (44) arranged between the first wall portion (100) and the second wall portion (102), and at least one toothed leading edge (30) jointly formed by the first wall portion (100) and the second wall portion (102). The at least one toothed leading edge (30) comprises a plurality of teeth (36), wherein the first wall portion (100) and the second wall portion (102) are connected at a frontal end of the at least one leading edge (30), thereby forming tips (86) of the teeth (36).

A blade cap is provided to shield a user from heat generated by operation of a blade assembly. The blade cap provides an insulative barrier between the blade assembly and the skin of the user. The blade cap may prevent discomfort or burns from the heat generated by the blade assembly. The blade cap includes openings, channels, projections, tabs, and other formations to allow the flow of air through the passageways between the blade cap and the blade.

A blade set for a hair cutting appliance is described. The blade set (26) is arranged to be moved through hair in a moving direction to cut hair, and includes a stationary blade including a support insert and a metal component. The metal component and the support insert are force-fitted to one another. The metal component is at least sectionally deformed to define at least one toothed leading edge having double-walled stationary blade teeth. The metal component forms a first wall that is arranged to serve as a skin-facing wall when in operation, and a second wall that is facing away from the first wall. A guide slot for a movable blade is defined between inwardly facing inner surfaces of the metal component and the support insert and a movable blade having a plurality of movable blade teeth.

An electric-powered trimmer includes a handle. A battery pack is positioned in the handle. An electrical circuit is positioned in the handle and electrically connected with the battery pack. A cutting assembly is removeably coupled to the handle.

A method of manufacturing a stationary blade. A metal component is provided, and a first bending procedure is applied, forming a top wall and two legs at opposite ends of the top wall that are spaced away from one another longitudinally. Each of the two legs is arranged at a first angle with respect to the top wall, and two bending edges are formed between the top wall and the two legs. A support insert is also provided having a longitudinal extension that is at least slightly greater than a receiving space between the two bending edges. The metal component and support insert are joined, and a second bending procedure is applied to the metal component, where the two legs are further bent, thereby arranging each of the two legs at a second angle with respect to the top wall that is smaller than the first angle.

The present invention relates to a cutter system for an electric shaver and/or trimmer, comprising a pair of cooperating cutter blades each having at least one row of comb-like cutting teeth, wherein one of said cutter blades is stationary and the other one is movable relative to the stationary cutter blade along a cutting surface defined between said cooperating cutter blades, said cutting teeth each having pairs of lateral cutting edges tapering towards a tooth tip, wherein said tooth tips of at least one of the cooperating cutter blades are provided with a flattened, beveled tip surface.

A cutting unit having a blade carrier carrying a cutting blade, and a guard. The guard includes a blade-facing surface engaging the cutting blade at a cut location, a planar guard contact surface for contacting the user's skin, where the guard contact surface is angled with respect to the blade-facing surface, and a guard extender separate from the guard. The guard extender includes a planar extension contact surface cooperating with the guard contact surface to provide an extended contact zone across the guard and the guard extender for contacting a user's skin. The blade-facing surface and the guard contact surface converge towards a tip of the guard, such that a cutting direction extends along the guard contact surface towards the tip. The extended contact zone may provide for improved stability and reliable orientation of the cutting unit for cutting while limiting material use.

A blade assembly for a hair cutting apparatus includes a first blade having teeth extending along a first blade edge, and a second blade having teeth extending along a second blade edge. A distance between the first and second blade edges defines a blade gap. A yoke is coupled to the second blade and configured to convert motion of a drive into reciprocation of the second blade relative to the first blade to cut hair. A spring includes a spring base and at least one spring arm configured to reciprocate with the second blade. A guide assembly includes a guide and a spring retainer, the guide being positioned between the first blade and the second blade, and the spring retainer fixing the spring base relative to the first blade, wherein in response to moving the guide relative to the first blade, the blade gap changes.