# US 5,343,881 A · Hair treatment apparatus and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,343,881 A - Document ID: US5343881A - Status: Granted - Kind: A - Application number: 07/802,873 - Filed: 1991-12-06 - Granted: 1994-09-06 - Earliest claimed: 1988-12-01 - Inventors: Zeev Golan; Ruth Golan; Shlomo Gilboa; Liora Gilboa - Web page: https://patentgrep.com/patent/US5343881A ## CPC - A45D 24/30: Combs specially adapted for removing dirt or grease (A45D24/32 takes precedence) - A45D: HAIRDRESSING OR SHAVING EQUIPMENT (wigs, toupees or the like A41G3/00, A41G5/00; hairdressers' chairs A47C1/04; hair cutting appliances, razors B26B); EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING ## Abstract Apparatus for treating hair including a handle; hair separation apparatus having a generally elongate base portion associated with the handle, and a plurality of parallel teeth attached to the base apparatus, and extending transversely therefrom, each tooth having a free end; and drive apparatus for oscillating the plurality of teeth at a frequency of no less than about 3,000 cycles per minute and for limiting a stroke of the free end of each the tooth to a length of no greater than approximately 8 mm, and for bringing the plurality of teeth into repeated engagement with a group of hairs attached to skin, thereby to ease passage of the hair separation apparatus through the group of hairs at a level of discomfort tolerable to a user. ## Claims ### Claim 1 A lice comb for treating and systematically delousing hair comprising: a handle; hair separation means including: a single elongate base means associated with said handle; and a plurality of closely spaced parallel teeth attached to said base means and extending transversely therefrom, each of said parallel teeth having a free end; and drive means for oscillating said plurality of teeth at a frequency of at least about 4,750 cycles per minute and for limiting a stroke of said free end of each said tooth to a length of no greater than approximately 8 mm, and for bringing said plurality of teeth into repeated engagement with a group of hairs attached to skin, thereby easing passage of said hair separation means through the group of hairs at a level of discomfort tolerable to a user while at the same time striking and pulling any lice and lice eggs from said hair at high speed causing them fatal injury. ### Claim 2 (depends on 1) Apparatus according to claim 1, and wherein each said tooth has a longitudinal axis and said drive means comprises means for oscillating each said tooth in a direction transverse to its longitudinal axis. ### Claim 3 (depends on 1) Apparatus according to claim 1, and wherein said base means has a longitudinal axis, each said tooth extending transversely therefrom; and said drive means comprises means for oscillating said hair separation means about said longitudinal axis of said base means. ### Claim 4 (depends on 1) Apparatus according to claim 1, and wherein each tooth of said plurality of teeth is attached to said base means so as to be separated from said longitudinal axis by a distance equal to at least one-quarter of the length of a single one of said plurality of teeth. ### Claim 5 Apparatus for treating hair comprising: a handle; hair separation means including: generally elongate base means associated with said handle; and a plurality of parallel teeth attached to said base means and extending transversely therefrom, each said tooth having a free end; and drive means for oscillating said plurality of teeth at a frequency of at least about 4,750 cycles per minute and for limiting a stroke of said free end of each said tooth to a length of no greater than approximately 8 mm, and for bringing said plurality of teeth into repeated engagement with a group of hairs attached to skin, thereby easing passage of said hair separation means through the group of hairs at a level of discomfort tolerable to a user, said drive means comprising means for imparting to said hair separation means an oscillatory motion having a linear component transverse to said longitudinal axis of said base means and further having rotational component about said longitudinal axis of said base means. ### Claim 6 (depends on 5) Apparatus according to claim 5, and wherein each tooth of said plurality of teeth is attached to said base means so as to be separated from said longitudinal axis by a distance equal to at least one-quarter of the length of a single one of said teeth. ### Claim 7 (depends on 5) Apparatus according to claim 5, and wherein said hair separation means comprises a lice comb. ### Claim 8 (depends on 5) Apparatus according to claim 5, and wherein said means for substantially preventing contact is configured for mounting onto said handle. ### Claim 9 (depends on 5) Apparatus according to claim 5, and wherein said teeth are positioned parallel to and between said transverse protrusions of said means for substantially preventing contact, and said transverse protrusions extend beyond said hair separation elements in a direction parallel to said second axis. ### Claim 10 (depends on 5) Apparatus according to claim 5, and wherein said hair separation means comprises means for engaging at least one of lice and lice eggs located within the hair. ### Claim 11 A method of treating hair comprising the following steps: providing hair separation apparatus including a generally elongate base and a plurality of parallel teeth attached to the base and extending transversely therefrom, each tooth having a free end; oscillating the hair separation apparatus at a frequency of at least 4,750 cycles per minute and so as to provide a stroke of the free ends of the tooth of length no greater than approximately 8 mm; placing the hair separation apparatus in a group of hairs, each having a length in a given direction; and moving the hair separation apparatus through the hairs in a direction generally transverse to the length of the hair, thereby easing passage of the hair separation apparatus through the hairs without vibrational discomfort to a user. ### Claim 12 (depends on 11) A method according to claim 11, and wherein the elongate base has a longitudinal axis and said step of oscillating comprises oscillating the plurality of teeth such that each tooth is oscillated in a direction transverse to its longitudinal axis. ### Claim 13 (depends on 11) A method according to claim 11, and wherein the base has a longitudinal axis, each of the plurality of parallel teeth extending transversely therefrom; and the step of oscillating comprises oscillating the hair separation apparatus about the longitudinal axis of the base. ### Claim 14 (depends on 11) A method according to claim 11, and wherein said hair separation apparatus is a lice comb and said method of treating hair is a method of delousing hair containing at least one of lice and lice eggs, wherein said oscillating lice comb also repeatedly strikes and pulls any lice and lice eggs from said hair at high speed causing fatal injury to said lice and lice eggs. ### Claim 15 A method of treating hair comprising the following steps: providing hair separation apparatus comprising a generally elongate base having a longitudinal axis, and a plurality of elongate teeth attached to the base and oriented transversely to the longitudinal axis; inparting to the hair separation apparatus an oscillatory motion having a linear component along the longitudinal axis and further having a rotational component about the longitudinal axis; placing the hair separation apparatus in a group of hairs, each having a length in a given direction; and moving the hair separation apparatus through the hairs in a direction generally transverse to the length of the hair, thereby easing passage of the hair separation apparatus therethrough. ### Claim 16 (depends on 15) A method according to claim 15, and wherein said method of treating hair is a method of delousing hair containing at least one of lice and lice eggs, and said step of imparting an oscillatory motion comprises an additional step of repeatedly engaging at least one of lice and lice eggs located within the hair. ### Claim 17 A method of delousing hair containing lice and lice eggs comprising the following steps: providing an apparatus having a lice comb and means for systematically causing fatal injury to lice and lice eggs infesting said hair, placing said lice comb in a group of hairs, moving said apparatus with the lice comb through the group of hairs, thereby causing separation of the lice and lice eggs from the hairs and at the same type systemic fatal injury to said lice and lice eggs located in said group of hairs.