Fire escape – ladder – or scaffold – Ladder – With hook or grab
Reexamination Certificate
2006-07-20
2009-08-18
Chin-Shue, Alvin C (Department: 3634)
Fire escape, ladder, or scaffold
Ladder
With hook or grab
C182S107000
Reexamination Certificate
active
07575097
ABSTRACT:
A ladder attachment including an elongated one piece member preferably molded from an elastomeric material and formed with an arcuate cavity on one side sized to approximately correspond to the outside of a utility pole or tree trunk and having a pair of end parts each formed with a hole sized to receive the upper end of a ladder stile to be mountable crosswise to the upper end of the ladder. A pair of curved slits are formed into the one side of the member each extending around one side of the cavity to form a pair of concentric curved gripper wing portions concentric to the cavity which are drawn together with a strap, which has ends connected together with a cinch to secure the ends together.
REFERENCES:
patent: 2806975 (1957-10-01), Palmquist
patent: 2870948 (1959-01-01), Lundgren
patent: 2925877 (1960-02-01), Wright
patent: 3022898 (1962-02-01), Loeb
patent: 3028929 (1962-04-01), Chubbs
patent: 3037579 (1962-06-01), Barrow
patent: 3062319 (1962-11-01), Wright
patent: 3096960 (1963-07-01), Kinney
patent: 3318415 (1967-05-01), Christie, Sr.
patent: 3336999 (1967-08-01), McSwain
patent: 3715012 (1973-02-01), Perry
patent: 3792756 (1974-02-01), Kelly
patent: 3828889 (1974-08-01), Rehm
patent: 4379498 (1983-04-01), Krusmark
patent: 4469194 (1984-09-01), McBride
patent: 4469195 (1984-09-01), Sartain
patent: D276467 (1984-11-01), Singer
patent: 4580661 (1986-04-01), Thomson, Jr.
patent: 4593790 (1986-06-01), Brewer et al.
patent: 4946004 (1990-08-01), Henson
patent: 5323875 (1994-06-01), Kennett
patent: 5622238 (1997-04-01), Farmer
patent: 5638916 (1997-06-01), Schneider
patent: D388883 (1998-01-01), Thivierge et al.
patent: 6250424 (2001-06-01), Laug
patent: 6354400 (2002-03-01), Purkayastha
patent: 6691825 (2004-02-01), Haig
patent: 6698546 (2004-03-01), Sandor, Sr.
patent: 6729441 (2004-05-01), Nahlen
patent: 6851518 (2005-02-01), Walker
patent: 2002/0108811 (2002-08-01), Ulmschneider et al.
patent: 2207453 (1989-02-01), None
Schienke Christopher J.
Sheridan Vincent J.
Benefiel John R.
Chin-Shue Alvin C
LandOfFree
Ladder attachment does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ladder attachment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ladder attachment will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4075362