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. 05, 2016
Filed:
Jun. 10, 2011
Timothy R. Ohm, Grover Beach, CA (US);
Mark Robert Claffee, Methuen, MA (US);
Martin Buehler, Watertown, MA (US);
David Brancazio, Cambridge, MA (US);
Timothy R. Ohm, Grover Beach, CA (US);
Mark Robert Claffee, Methuen, MA (US);
Martin Buehler, Watertown, MA (US);
David Brancazio, Cambridge, MA (US);
iRobot Corporation, Bedford, MA (US);
Abstract
A transmission assembly comprises: a motor; a shift actuator mechanism coupled to the motor; a sun gear coupled to an output shaft of the motor; a first magnet assembly coupled to the sun gear; a ring gear assembly coupled to a shift coupler, the shift coupler being configured to engage via the shift actuator mechanism; a second magnet assembly coupled to a housing face plate, the housing face plate being coupled to an output gear box; and a planet carrier coupled to an output pinion in communication with the output gearbox. The planet carrier comprises at least one planet gear. In a first mode, the ring gear is locked to the first magnet assembly and configured to rotate with the sun gear, the ring gear being configured to prevent the rotation of the at least one planet gear about its own axis causing the planet carrier to rotate at the same speed as the sun gear. In a second mode, the ring gear is locked to the second magnet assembly allowing the sun gear to engage the at least one planet gear, the sun gear being configured to rotate the at least one planet gear about its own axis causing the planet carrier to rotate at a reduced speed from the sun gear.