Leon T Tate

US Patent:

7004670, Feb 28, 2006

Filed:

May 23, 2002

Appl. No.:

10/154401

Inventors:

Weixiong Chen - Elmhurst NY, US
Leon J. Tate - Nesconset NY, US

Assignee:

The Chamberlain Group, Inc. - Elmhurst IL

International Classification:

F16B 21/00
F16B 21/02

US Classification:

4033223, 49139

Abstract:

A retrofitable manual disconnect apparatus includes an output shaft engagement member () that couples to the output shaft () of a powered movable barrier operator (), a movable barrier engagement member () that couples to a movable barrier (), and a hand-operable engagement mechanism () that controls coupling between the above components. In one embodiment, the hand-operable engagement mechanism () includes a pivoting handle () that cooperates with a biasing member () to control the position of a movable pin (). In particular, the movable pin () can be controllable inserted in or removed from a hole () in the output shaft engagement member () to facilitate an engaged and disengaged state, respectively.

US Patent:

20030221929, Dec 4, 2003

Filed:

May 30, 2002

Appl. No.:

10/158577

Inventors:

Weixiong Chen - Elmhurst NY, US
Leon Tate - Nesconset NY, US

Assignee:

The Chamberlain Group, Inc.

International Classification:

F16D019/00

US Classification:

192/083000

Abstract:

A movable barrier operator () has a first disconnect mechanism () and a second disconnect mechanism () wherein either mechanism can be used to cause the output drive of the operator to be disengaged from the movable barrier to allow the movable barrier to be manually moved. In one embodiment, the second disconnect mechanism () is located distal to the operator itself such that the disengagement mechanism can be operated from an area external to the operator.