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:
Dec. 08, 2015
Filed:
Jan. 17, 2013
Piedek Technical Laboratory, Tokyo, JP;
Hirofumi Kawashima, Tokyo, JP;
PIEDEK TECHNICAL LABORATORY, , JP;
Abstract
A quartz crystal unit comprises a quartz crystal tuning fork resonator having a quartz crystal tuning fork base, and first and second quartz crystal tuning fork arms. Each of the first and second quartz crystal tuning fork arms has a first main surface and a second main surface opposite the first main surface, and at least one groove formed in at least one of the first and second main surfaces of each of the first and second quartz crystal tuning fork arms. At least one mounting arm having a width less than 0.45 mm protrudes from the quartz crystal tuning fork base, and the overall length of the quartz crystal tuning fork resonator is less than 2.1 mm.