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:
May. 02, 1989
Filed:
Jul. 20, 1987
Robert H Niemeyer, III, Martinez, CA (US);
AM International Corporation, Chicago, IL (US);
Abstract
A symmetrical braking system for a graphic recorder includes a generally cylindrical brake support supported by a carriage drive and having a combination of cam surfaces. A brake rotor is rotatable supported upon the brake support and defines an arrangement of captivating notches which receive a pair of brake shoes in an overlying arrangement. Bearing means are coupled to each of the brake shoes and are driven by the cam surfaces of the brake support. A coupling arrangement is secured to the brake rotor and provides a coupling for rotational forces between the brake rotor and an actuator beam extending through the brake structure. Rotational forces applied to the actuator beam are coupled to the brake rotor and the bearing means cooperate with the cam surfaces to move the brake shoes into or out of engagement with the actuator beam as a function of rotational position.