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:
Oct. 21, 1997
Filed:
Feb. 01, 1995
Nobuhisa Watanabe, Tokyo, JP;
Mikihiro Kuramitsu, Funabashi, JP;
Yoshida Industry Co., Ltd., Tokyo, JP;
Abstract
A method of manufacturing a panel button includes providing a molding die including a transferable molding die defining a cavity, a core molding die having a runner, a sprue and a gate and a stationary molding die having a sprue. A hollow space is provided in a bottom of the cavity wherein a push button is formed. A projecting portion is inserted into the cavity and is formed on the underside of the core molding die. Two hollow coaxial spaces are connected to each other, one to form a boss, the other to form an elastic arm. A plastic sheet is introduced into the cavity and is sandwiched between the transferable molding die and the core molding die. The plastic sheet has an unbonding portion at a position where the push button is to be formed. A molten resin material is injected into the cavity through the runner, sprue and gate. The thus formed panel button includes the push button on the plastic sheet.