Christopher H Grace

Author:

Christopher Grace

ISBN #:

0824708504

US Patent:

D470665, Feb 25, 2003

Filed:

Feb 13, 2002

Appl. No.:

29/155614

Inventors:

David Harris - Nashua NH
Rudy Woodard - Nashua NH
Steven Schwartz - Nashua NH
Christopher Grace - Nashua NH

Assignee:

Brookstone Company, Inc. - Nashua NH

International Classification:

0607

US Classification:

D 6312

US Patent:

20200405106, Dec 31, 2020

Filed:

Sep 14, 2020

Appl. No.:

17/019924

Inventors:

- Bedford MA, US
Christopher Robin Grace - Windham NH, US
Oliver Majer Lewis - Waltham MA, US
Stephen Albert Hickey - Somerville MA, US
Jude Royston Jonas - Hudson NH, US

International Classification:

A47L 9/12
A47L 9/14
A47L 9/10

Abstract:

A mobile cleaning robot includes a removable filter unit configured to receive a supply airflow generated by a blower and to filter debris from the supply airflow, a filter seat, a filter access opening, a filter access door, and a filter presence system. The filter access door is pivotable between a closed position, wherein the filter access door covers the filter access opening, and an open position, wherein the filter access door is displaced from the filter access opening to permit access to the filter seat. The filter presence system is configured to: permit the filter access door to move from the open position into the closed position when the filter unit is disposed in the filter seat; and prevent the filter access door from being moved into the closed position when the filter unit is not disposed in the filter seat. The filter presence system includes a lift arm movable between an extended position and a retracted position. When the filter access door is open, the lift arm assumes the extended position to receive the filter unit in the filter seat. Moving the filter access door from the open position into the closed position when the filter unit is disposed in the filter seat causes the lift arm to move to the retracted position.

US Patent:

20190200826, Jul 4, 2019

Filed:

Jul 18, 2018

Appl. No.:

16/039070

Inventors:

- Bedford MA, US
Christopher Robin Grace - Windham NH, US
Oliver Majer Lewis - Waltham MA, US
Stephen Albert Hickey - Somerville MA, US
Jude Royston Jonas - Hudson NH, US

International Classification:

A47L 9/12
A47L 9/10
A47L 9/14

Abstract:

A mobile cleaning robot includes a removable filter unit configured to receive a supply airflow generated by a blower and to filter debris from the supply airflow, a filter seat, a filter access opening, a filter access door, and a filter presence system. The filter access door is pivotable between a closed position, wherein the filter access door covers the filter access opening, and an open position, wherein the filter access door is displaced from the filter access opening to permit access to the filter seat. The filter presence system is configured to: permit the filter access door to move from the open position into the closed position when the filter unit is disposed in the filter seat; and prevent the filter access door from being moved into the closed position when the filter unit is not disposed in the filter seat. The filter presence system includes a lift arm movable between an extended position and a retracted position. When the filter access door is open, the lift arm assumes the extended position to receive the filter unit in the filter seat. Moving the filter access door from the open position into the closed position when the filter unit is disposed in the filter seat causes the lift arm to move to the retracted position.