Double lock T-handle assembly

Details Double lock T-handle assembly Double lock T-handle assembly

2005-10-11

2005-10-11

Walsh, John B. (Department: 2151)

Locks

Special application

For control and machine elements

C070S208000, C070S212000

Reexamination Certificate

active

06952940

ABSTRACT:
A double lock T-handle is disclosed having a tray which includes an inwardly dished handle receiving area, a second recessed handle receiving region, and a recessed padlock receiving depression. The tray further includes a lock cylinder casing having a locking cylinder and a shaft cylinder casing having a shaft. The lock cylinder functions as a first lock and a padlock functions as a second lock for the double lock T-handle. The T-handle includes a locking shoulder and a fracturable throat section which deters forced breakage of the T-handle and undesirable opening of a locked door.

REFERENCES:
patent: 958815 (1910-05-01), Markham
patent: 1534584 (1925-04-01), Fredrick
patent: 1716536 (1929-06-01), Sieben
patent: 1720304 (1929-07-01), Toneray
patent: 1812334 (1931-06-01), Glockler
patent: 1995338 (1935-03-01), Andrews
patent: 2034746 (1936-03-01), Ciak et al.
patent: 2160611 (1939-05-01), Alexander
patent: 2219626 (1940-10-01), Johnson
patent: 2459920 (1949-01-01), Clark
patent: 2473937 (1949-06-01), Cameron
patent: 2701735 (1955-02-01), Segal
patent: 2707121 (1955-04-01), Behnke
patent: 2844020 (1958-07-01), Chimm et al.
patent: 2851871 (1958-09-01), Newell
patent: 2859430 (1958-11-01), O'Callaghan
patent: 2949328 (1960-08-01), Kaiser
patent: 3096114 (1963-07-01), Trammell, Jr.
patent: 3159994 (1964-12-01), Schulz
patent: 3652112 (1972-03-01), Panelli
patent: 3871198 (1975-03-01), Miller
patent: 3899204 (1975-08-01), Ulrich
patent: 4031730 (1977-06-01), Kern
patent: 4057003 (1977-11-01), Atchisson
patent: 4099593 (1978-07-01), Schultz
patent: 4216985 (1980-08-01), Sorensen
patent: 4229956 (1980-10-01), Thorburn
patent: 4237710 (1980-12-01), Cardozo
patent: D271562 (1983-11-01), Weinerman
patent: 4470277 (1984-09-01), Uyeda
patent: 4502720 (1985-03-01), Fayerman et al.
patent: 4550581 (1985-11-01), Best et al.
patent: 4583775 (1986-04-01), Bisbing
patent: 4623178 (1986-11-01), Geringer et al.
patent: 4667994 (1987-05-01), Foshee
patent: 4706478 (1987-11-01), Swan et al.
patent: 4732418 (1988-03-01), Crown et al.
patent: 4763935 (1988-08-01), Bisbing
patent: 4827614 (1989-05-01), Mitchell
patent: 4941336 (1990-07-01), Steckler
patent: 4979767 (1990-12-01), Lin
patent: 4989907 (1991-02-01), Edmonds et al.
patent: 5015019 (1991-05-01), Razdolsky
patent: 5172944 (1992-12-01), Munich et al.
patent: 5184853 (1993-02-01), Whatley
patent: 5236234 (1993-08-01), Norman
patent: 5259091 (1993-11-01), Mordick
patent: D343347 (1994-01-01), Lau et al.
patent: 5292189 (1994-03-01), Lau et al.
patent: 5299597 (1994-04-01), Fort et al.
patent: 5301389 (1994-04-01), Engel et al.
patent: 5307653 (1994-05-01), Davis
patent: 5339659 (1994-08-01), Guzzinati
patent: 5390517 (1995-02-01), Ymada
patent: 5408853 (1995-04-01), Yamada
patent: D360345 (1995-07-01), Swan et al.
patent: 5469725 (1995-11-01), Yamada
patent: 5474339 (1995-12-01), Johnson
patent: 5481889 (1996-01-01), Richard et al.
patent: 5509700 (1996-04-01), Kennedy, Jr.
patent: 5509703 (1996-04-01), Lau et al.
patent: 5520427 (1996-05-01), Mader
patent: 5526660 (1996-06-01), Bennett et al.
patent: D371300 (1996-07-01), Mordick
patent: 5566992 (1996-10-01), Anderson et al.
patent: 5577782 (1996-11-01), Johnson et al.
patent: 5582042 (1996-12-01), Mordick
patent: 5582443 (1996-12-01), Finkelstein et al.
patent: 5584515 (1996-12-01), Silye
patent: 5595408 (1997-01-01), Jeche
patent: 5620290 (1997-04-01), Homfeldt et al.
patent: 5621251 (1997-04-01), Yamazaki
patent: 5630632 (1997-05-01), Swan
patent: 5632070 (1997-05-01), Wakabayashi
patent: 5634357 (1997-06-01), Nutter et al.
patent: 5642909 (1997-07-01), Swan et al.
patent: 5664448 (1997-09-01), Swan et al.
patent: 5666695 (1997-09-01), Jegers et al.
patent: D385768 (1997-11-01), Nutter et al.
patent: 5683005 (1997-11-01), Mordick
patent: 5700044 (1997-12-01), Wartian
patent: 5704100 (1998-01-01), Swan
patent: D391143 (1998-02-01), Jancsek
patent: 5722121 (1998-03-01), Lau et al.
patent: 5732575 (1998-03-01), Kaveney
patent: D396397 (1998-07-01), Swan
patent: 5775145 (1998-07-01), Kasper
patent: 5803655 (1998-09-01), Furuya
patent: 5806351 (1998-09-01), Learnahan
patent: D400076 (1998-10-01), Jancsek et al.
patent: 5862690 (1999-01-01), Jancek
patent: 5879035 (1999-03-01), Jancsek et al.
patent: 5899508 (1999-05-01), Cetnar et al.
patent: D411433 (1999-06-01), Swan et al.
patent: 5927014 (1999-07-01), Goldenberg
patent: 6019402 (2000-02-01), Arabia, Jr. et al.
patent: 6039363 (2000-03-01), Sugimura et al.
patent: 6045168 (2000-04-01), Johnson et al.
patent: 6053543 (2000-04-01), Arabia, Jr. et al.
patent: 6067826 (2000-05-01), Holloway et al.
patent: 6068308 (2000-05-01), Molzer
patent: 6101856 (2000-08-01), Pelletier et al.
patent: 6131967 (2000-10-01), Kondo et al.
patent: 6145354 (2000-11-01), Kondo et al.
patent: 6257154 (2001-07-01), Kasper
patent: 6263712 (2001-07-01), Ramsauer
patent: 6293130 (2001-09-01), Ramsauer
patent: 6318770 (2001-11-01), Molzer
patent: 6354119 (2002-03-01), Molzer
patent: 6427501 (2002-08-01), Ramsauer
patent: 6474119 (2002-11-01), Halvorson et al.
patent: 6532778 (2003-03-01), Molzer et al.

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