The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 29, 1989
Filed:
Jan. 29, 1988
Vincent L Ramik, Annandale, VA (US);
Duchess Limited, Alexandria, VA (US);
Abstract
A method of making hair-streaking cap which includes a semi-hemispherical body formed of relatively resilient polymeric or copolymeric plastic material. The cap has a plurality of areas adapted to be penetrated by a hook-like implement for pulling groups of strands of hair therethrough which can be treated with a liquid. The semi-hemispherical body has on its internal surface at least one radially inwardly directed circumferential rib which projects beyond an inner semi-hemispherical surface of the body. The method included forming a first cup-shaped article in a female mold with a male plunger; removing the first article and cutting a circumferential groove in the plunger and molding a second cup-shaped article with an internal circumferential rib. The circumferential rib (1) prevents internal liquid leakage downwardly when on the head of a person, (2) automatically increases the resilience of the semi-hemispherical body, and reduces the internal diameter to effect a relatively tight fit of the cap upon the head of a user.