Michael D Cain

US Patent:

D4333071, Nov 7, 2000

Filed:

Feb 28, 2000

Appl. No.:

D/119363

Inventors:

Chad A. Hickman - Plainfield IN
Michael L. Cain - Noblesville IN
Eric K. Arthur - Indianapolis IN
Roger A. Vitt - Indianapolis IN

Assignee:

Von Duprin, Inc. - Indianapolis IN

International Classification:

0806

US Classification:

D 8321

US Patent:

D4307860, Sep 12, 2000

Filed:

Feb 28, 2000

Appl. No.:

D/119352

Inventors:

Chad A. Hickman - Plainfield IN
Michael L. Cain - Noblesville IN
Eric K. Arthur - Indianapolis IN
Roger A. Vitt - Indianapolis IN

Assignee:

Von Duprin, Inc. - Indianapolis IN

International Classification:

0806

US Classification:

D 8321

US Patent:

50854755, Feb 4, 1992

Filed:

Jun 3, 1991

Appl. No.:

7/709167

Inventors:

Marlin Austin - Speedway IN
Michael Cain - Noblesville IN
Paul J. Haeck - Carmel IN

Assignee:

Von Duprin, Inc. - Indianapolis IN

International Classification:

E05C 308

US Classification:

292 92

Abstract:

A housing mounted to the frame of a panic exit device confines a translatable limb, and a pivotable arm. The limb has a lobe which obstructs the arm to prevent its pivoting and, as a consequence, the arm blocks the latchbolt linkage of the device to prevent unlatching. A rod joined to a time-delayed-operative solenoid is coupled to the limb for displacing the limb from arm-pivoting obstruction, to allow the arm to unblock the latchbolt linkage, whereby the latchbolt can unlatch following the time delayed deenergization of the solenoid. Under normal conditions, the solenoid is energized to prohibit immediate unlatching.

US Patent:

54129613, May 9, 1995

Filed:

Jun 1, 1993

Appl. No.:

8/070064

Inventors:

Michael L. Cain - Noblesville IN
Marlin D. Austin - Speedway IN

Assignee:

Von Duprin, Inc. - Indianapolis IN

International Classification:

E05C 1502

US Classification:

70 92

Abstract:

A mechanism for dogging a door latch assembly of a panic exit device having a retractible door latch biased to move outward from the door latch assembly, with inward movement of the door latch being activated by a push bar, includes a mechanism for holding a key cylinder positioned adjacent to the door latch assembly. A catch mechanism linked to the door latch is configured to move as the door latch is retracted, and a arm is pivotably mounted adjacent to the key cylinder holding mechanism. The arm is configured to retain the catch mechanism, with the door latch being prevented from outwardly moving with respect to the door latch assembly. When a key cylinder having an attached sweep arm is rotated, the sweep arm can alternatively rotate to engage the catch mechanism when a key is turned in the key cylinder, dogging the door latch assembly, or undog the catch mechanism from the arm by sweeping around to break the attachment between the arm and catch mechanism, allowing the door latch to move from its retracted position to its normally biased outward position with respect to the door latch assembly.