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:
Jan. 01, 2002
Filed:
Jun. 06, 2000
Yutaka Sakamoto, Hiroshima, JP;
Delta Tooling Co., Ltd., Hiroshima, JP;
Abstract
A stepless slide adjuster having a safety lock includes a first member and a second member, which can move relatively to each other, a nut fastened to the first member, a screw rotatably attached to the second member and screwed into the nut, a manual locking device for manually locking the screw, and an emergency locking device having a brake drum and brake shoes for emergency locking the screw. The lead angle of the nut and the screw is set to be larger than the friction angle between them. When the locking with the manual locking device is released, and the screw rotates with an acceleration or a speed that exceeds a predetermined value, then the brake shoes spread and frictionally engage the brake drum, thereby impeding a relative movement between the first member and the second member.