Metal deforming – With cutting – By composite tool
Reexamination Certificate
1999-10-29
2001-04-17
Crane, Daniel C. (Department: 3725)
Metal deforming
With cutting
By composite tool
C029S513000, C029S566100, C072S479000
Reexamination Certificate
active
06216522
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a tool for assisting a worker in installing turn vanes within air conditioning duct work.
DESCRIPTION OF THE PRIOR ART
Air conditioning duct work often includes 90 degree elbows and similar sharp turns within which turn vanes are installed to more efficiently to direct air through the duct. The turn vanes are secured to a plate referred to as a turn vane rail which is then mounted within the duct. Securing the turn vane to the rail is cumbersome and difficult. Each vane includes rows of aligned indentions each having a slit therethrough. An edge of the turn vane is inserted through the slit and the protruding portion is bent with a screwdriver or other tool thereby securing the vane to the rail. Various tools for securing the turn vane exist, most of which are complicated, include numerous parts or are awkward and cumbersome to use. The present invention provides an easy to use and inexpensive to manufacture tool that, when forced against the protruding portion of the turn vane, cuts and bends the edge of the vane in opposite directions thereby securing the vane to the rail. Various tools exist in the prior art. For example, U.S. Pat. No. 5,495,649 issued to Long discloses a tool for separating a pair of oppositely disposed spot-welded sheet metal panels.
U.S. Pat. No. 5,377,519 Hayashi discloses a punch and die for forming a protrusion and a pair of slits in sheet material to separate a product therefrom.
U.S. Pat. No. 5,327,631 issued to Lincavage discloses a roll pin punch kit apparatus including a plurality of roll pin punches in association with an elongated handle that are mounted for ease of assembly within a container structure.
U.S. Pat. No. 5,022,253 issued to Parlatore discloses a hand-held punch plier.
U.S. Pat. No. 3,040,326 issued to DeCaro discloses a fastener device.
U.S. Pat. No. 2,087,186 issued to Freeman, Jr. discloses a punch.
Although the prior art discloses numerous tools, none relate to a device for securing a turn vane to a turn vane rail.
SUMMARY OF THE INVENTION
The present invention relates to a tool for securing a turn vane to a turn vane rail. The device comprises an octagonal shaft having a cutting head at the top end thereof. The cutting head includes a pair of spaced outer blades each having a downwardly angled cutting surface with an oppositely facing inner blade disposed therebetween. The inner blade also includes a downwardly angled cutting surface. A second embodiment is designed to be attached to a power tool such as an air driven hammer. When the cutting head is pressed against a turn vane with a predetermined amount of force, an edge of the vane is cut twice and bent in opposite directions thereby securing the vane to the vane rail. It is therefore an object of the present invention to provide a tool for attaching a turn vane that is easy-to-use and inexpensive-to-manufacture.
It is another object of the present invention to provide a tool for attaching a turn vane that may be interchangeably used with a conventional hammer or an air driven hammer.
It is yet another object of the present invention to provide a tool for securing a turn vane that quickly and conveniently secures a turn vane to a turn vane rail.
Other objects, features and advantages of the present invention will become readily apparent from the following detailed description of the preferred embodiment when considered with the attached drawings and the appended claims.
REFERENCES:
patent: 2087186 (1937-07-01), Freeman, Jr.
patent: 2626687 (1953-01-01), Williams
patent: 3040326 (1962-06-01), De Caro
patent: 3222779 (1965-12-01), Zinniger
patent: 3411339 (1968-11-01), Brown
patent: 4404835 (1983-09-01), Frith
patent: 5022253 (1991-06-01), Parlatore
patent: 5068957 (1991-12-01), Felson
patent: 5202524 (1993-04-01), Nechushtan
patent: 5323632 (1994-06-01), Shirasaka
patent: 5327631 (1994-07-01), Lincavage
patent: 5377519 (1995-01-01), Hayashi
patent: 5495649 (1996-03-01), Long
Crane Daniel C.
Tolar Kenneth L.
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