Universal trimmer blades adjuster

Abstract

There are many trimmer models with 2 main parts, the static comb blade and the side moving cutter blade driven by electric motor/vibrator. These blades differ in many ways, shapes, sizes . . . which require fine adjustments and tenth of millimeter clearance at the end of the blades. Some models come with an adjuster that fits its model only with a fixed clearance that cannot be modified and does not fit other models. The proposed inventions are universal trimmer blades adjusters that fit most trimmer blades models and the clearance can be varied to meet the users' requirements. First invention design has one moving part with non-linear smooth adjustments and second invention design has two moving parts with linear fine adjustments.

Claims

1. A universal trimmer blades adjuster comprising: a base plate; a holder with angle marks; a holder; a clamp holder; a cutter clamp rod; a clamps wing screw; an upper cutter clamp; a top spring; a lower spring; a rotating plate; a rotating plate wing screw; a comb clamp rod; a comb lower clamp; a set of screws; a cutter blade; and a comb blade; wherein the cutter clamp rod is affixed to the upper cutter clamp; wherein the top spring is attached to the upper cutter clamp configured to push the cutter blade towards the rotating plate; and wherein the lower spring is attached to the comb lower clamp configured to push the comb blade towards the rotating plate.

2. The universal trimmer blades adjuster of claim 1, wherein the adjuster is configured with an angle variation-based design with the rotating plate with respect to the base plate resulting in a non-linear smooth adjustment of the angle to manipulate a displacement of the cutter blade and a displacement of the comb blade.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIGS. 1A-1B show the first model RUTBA. The rotating plate on one side has a tenth of millimeter step that can be used clearance for some models.

(2) FIGS. 2A-2C illustrate the effect of rotating the plate on narrowing the angle and changing the clearance between the cutter and comb blades. It is obvious the smaller the angle between the base and rotating plates the bigger the clearance between the cutter and the comb blades. It is worth to mention that the amount of clearance in not proportional to angle value i.e. the RUTBA model is a non-linear, but very smooth and fine, blades adjuster.

(3) Note part (8) is a small disk, metal or hard rubber, inside the clamps holder (part 4), between the clamps rods (parts 7 & 13) and in line with the clamps screw (part 6). This disk serves to tighten the rod of the lower comb clamp at same time tightening the rod of the upper cutter clamp by the clamps wing screw (part 6). Some of comb blades (part 19) have a ridge, so the lower comb clamp (part 13) has an extension to compensate for the ridge. The clamp holder (part 4) is fastened to the base plate (part 1) by screws. Since the clamps assembly to fasten the trimmer blades has no role in blades adjustments, they are not limited to the shown design and subject to modifications. RUTBA parts are: 1—Base plate 2—Holder with angle marks 3—Holder 4—Clamps holder 5—Cutter clamp rod 6—Clamps wing screw 7—Cutter, upper, clamp 8—Disk inside clamp holder, not visible, between clamp rods 9—Top & lower Springs 10—Rotating plate 11—Rotating plate wing screw 12—Comb clamp rod 13—Comb, lower, clamp 14—Screws 15—Tenth millimeter step 16—Pin holes 17—Axis 18—Cutter blade 19—Comb blade 20—Clearance

(4) FIGS. 3A-3B show the second model SUTBA. The clamp type and parts are the same as RUTBA model and the clamp holder is fastened to levelling plate (part 22) by screws so it moves up/down with the levelling plate.

(5) FIGS. 4A-4C are illustrations and steps for using the SUTBA model. First the comb and cutter blades (parts 19&18) are apart and slider bar is fully back. Then use the slider wheel nut (part 27) to move the slider bar (part 26) above the comb blade (part 19) and use slider interface (part 31) as reference to level the blades interface (part 33), just below the slider interface using the levelling wheel nut to move up/down the levelling plate (part 22), so the slider bar is still free to move. Finally the slider bar is moved to the required clearance (part 20) and the screws of the cutter blade's guide are tightened at that favored clearance. SUTBA parts are: 18—Cutter blade 19—Comb blade 20—Clearance 21—Body or frame 22—Levelling plate 23—Levelling wheel nut 24—Levelling screw 25—Levelling guides #4 26—Slider bar 27—Slider wheel nut 28—Slider guides #2 29—Slider screw 30—Slider screw lock 31—Slider interface 32—Markers 33—Blades interface
The clamp parts in SUTBA are same as in RUTBA hence not listed with SUTBA parts. Note that parts are continued numbering to avoid mixing parts of the two models.

DETAILED DESCRIPTION AND BEST MODE OF IMPLEMENTATION

(6) The first universal trimmer blades adjuster with rotating plate, RUTBA model, is less complicated as has only one moving part, the rotating plate. All parts must be loose, the wing-screws (parts 6 & 11) and the screws of the cutter blade's guide that is a part between the comb and cutter blades. The comb blade (part 19) sits flat on the base plate (part 1) and the cutter blade (part 18) on top of the comb blade. Both blades are hold firm to base plate and pushed towards the rotating plate by the clamps (parts 7 & 13). Usually zero clearance is not favored to avoid contact with and hurt skin. Rotating the plate towards the base plate decrease the angle between them and increases the clearance between the comb and cutter blades. The rotating plate has a V-shaped access so users can see through and determine the desired clearance, users can use a magnifier or a mobile camera for zooming. Then tighten, in order, the rotating plate and clamps wing-screws (parts 11 & 6) so the blades do not move. Through the V-shaped access users can tighten screws of the cutter blade's guide. Users can make note for the angle of rotation provided by the angle marks on holder (part 2) for reference and next time adjustment.

(7) The amount of clearance is affected by many factors such as the thickness and the shape (round, square or trapezoidal . . . ) at the end of, mainly cutter, blades. These factors vary from model to other hence angle of adjustment is not same for all models. It is difficult to tell which rotation angle fits a certain clearance and model, only by observation for each trimmer model. Hence the need for a universal adjuster. The RUTBA model is a fine and smooth non-linear blades adjuster since both blades move with the rotating plate but the cutter blades at a higher rate than comb blade, which are affected by above factors.

(8) The second universal trimmer blades adjuster with sliding block, SUTBA model, is straight forward but requires two movements, the levelling base plate and the sliding block. The loose comb blade (part 19) is placed on the levelling plate (part 22) while the slider bar (part 26) is moved enough by the slider wheel nut (part 27) above the leveling plate. The leveling plate is then adjusted up/down using the levelling wheel nut till the blades interface (part 33) just touches the slider interface (part 31) leaving it free to move. Place cutter blade on the comb blade and adjust the slider bar to the desired clearance and tighten screws of the cutter blade's guide.

(9) Note that a small window facing the blades end can be cut to the slider bar to see through the clearance using a magnifier or zoomed mobile camera, or rely on the markers. These markers are micrometer scale that can be analogue or digital. These additions, small window, analogue or digital marker are optional subject to clients' needs.

(10) The levelling and slider screws (parts 24 & 29) are either welded, glued or tightly locked (for example part 30 a small screw to lock slider screw) to the plate and bar so only their wheel nuts are free to rotate. These screws are fine pitch and their flat ends are surfaced with the plate and bar surfaces. The wheel nuts are marked with numbers so users know how much the plate and bar moves and make notes of these numbers for next adjustments.

(11) The guides (parts 25 & 28) of levelling plate and slider bar are to ensure the straight movement of the plate and the bar with possibility to reduce levelling plate guides but not slider guides. These guides are smooth circular rods and tight holes, with rod tightly locked to their positions.

(12) Most materials of the invention are made from metal such as iron that are frictionless and non-sticky like Aluminum. Hard plastic is an option but not desirable.

(13) It is understood that the enclosed figures relating and describing the invention, the invention is not limited to the particular figures shown and described herein. The invention is customizable in many ways that various changes and modifications may be made without departing from the scope or spirit of this invention as defined by the following claims.