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:
Mar. 29, 2005
Filed:
Jul. 25, 2003
Pan Chen-lieh, Shrlin, TW;
Pan Chen-Lieh, Shrlin, TW;
QDS Injection Molding LLC, Rancho Santa Fe, CA (US);
Abstract
A headband adjustment device includes a base, an adjustable seat, at least a press piece, a resilient adjustment plate and two band shafts. The base provides a base through hole. The adjustable seat is joined to the base an has a wing plate at two opposite lateral sides and an adjustment frame at two ends. The press piece is disposed beside the respective wing plate with two ends extending a press slant end. The adjustment plate is fiat with a middle protrusion top and at both lateral sides of the protrusion top having a fixing projection respectively, at a bottom near both ends having a lift guide groove with a plate slant extending toward the two ends respectively to interfere with ratchet gears on the headband. The band shafts each have an end projection and the headband encloses the respective band shaft and extends outward inversely.