US4612945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Comb
Assignee: AMERICAN COMB CORP
•
Filing: 1985-02-20
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Granted: 1986-09-23
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Expires: 2005-02-20
Abstract
Abstract A comb for removing lice and nits from the hair is formed by a base and a plurality of teeth extending from said base in substantially the same direction. The longitudinal axis of each tooth is parallel to the longitudinal axis of each other tooth. Each tooth has a polygonal cross sectional shape as in the form of a triangle. The cross sectional dimensions of each tooth enlarge from the free end of each tooth toward the base so that the spacing between adjacent teeth narrows toward the base. The facing edges of adjacent teeth interact with each other to capture, in a scissor-like manner, lice and nits therebetween.
Inventors
- 👤 Frank Bachrach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:55
CPC Classifications
A; A45; A45D; A45D24/00; A45D24/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
218 words
A comb for removing lice and nits from hair comprising a base, a plurality of teeth extending substantially in the same direction away from the base, the longitudinal axis of each tooth being parallel to the longitudinal axis of each other tooth and substantially the same length, each said tooth having a triangular cross sectional shape forming a three sided pyramid, the sides of each such cross sectional triangle increasing in length from the free end of each tooth toward the base, so that the spacing between adjacent teeth narrows toward said base, the cross sectional triangle of each tooth having a base side and an apex opposite said base side, the base side of each cross sectional triangle of each tooth lying along the same line when the cross sectional plane of one tooth passes through each other tooth, each of the sides of said cross sectional shape of each tooth converging at a rounded top of each tooth, and the side walls of each triangular shaped tooth meet to form an edge at the intersection thereof, said teeth being arranged on said base so that said edge of each tooth which forms said apex of said cross sectional triangle extends in a direction opposite to the apex of the cross sectional triangle of each adjacent tooth.
Claim 2
Dependent Claim
218 words
A comb for removing lice and nits from hair comprising a base, a plurality of teeth extending substantially in the same direction away from the base, the longitudinal axis of each tooth being parallel to the longitudinal axis of each other tooth and substantially the same length, each said tooth having a triangular cross sectional shape forming a three sided pyramid, the sides of each such cross sectional triangle increasing in length from the free end of each tooth toward the base, so that the spacing between adjacent teeth narrows toward said base, the cross sectional triangle of each tooth having a base side and an apex opposite said base side, the base side of each cross sectional triangle of each tooth lying along the same line when the cross sectional plane of one tooth passes through each other tooth, each of the sides of said cross sectional shape of each tooth converging at a rounded top of each tooth, and the side walls of each triangular shaped tooth meet to form an edge at the intersection thereof, said teeth being arranged on said base so that said edge of each tooth which forms said apex of said cross sectional triangle extends in a direction opposite to the apex of the cross sectional triangle of each adjacent tooth.
Claim 3
Dependent Claim
71 words
The comb according to claim 1 wherein facing edges of adjacent triangular shaped teeth formed in part by the side of each tooth which forms the base side of each said triangle and which lie along said same line meet at a point approximately twenty percent of the length of said teeth from the base so that at said point the spacing between facing edges of adjacent teeth diminishes to zero.
Claim 4
Dependent Claim
48 words
The comb according to claim 2 wherein the length of each side of said cross sectional triangular shape increases from the top of said teeth torward the base so that the distance between facing sides of adjacent teeth diminishes from the top of said teeth toward the base.
Claim 5
Dependent Claim
19 words
The comb according to claim 3 wherein the base of each triangularly shaped teeth lie in the same plane.
Claim 6
Dependent Claim
20 words
The comb according to claim 1 wherein the side walls of each face of each tooth has a non-smooth surface.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-22 | 1990-03-24 | 1990-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-22 | 1994-03-24 | 1994-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-22 | 1998-03-24 | 1998-09-23 | $7700.00 | Window Closed / Lapsed |