Excavating – Combined or convertible – Combined with fork or rake
Reexamination Certificate
2003-05-01
2004-04-13
Batson, Victor (Department: 3671)
Excavating
Combined or convertible
Combined with fork or rake
C172S817000, C172S253000, C172S252000, C171S063000, C171S043000, C414S912000, C414S724000
Reexamination Certificate
active
06718662
ABSTRACT:
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not Applicable
BACKGROUND OF THE INVENTION
This invention relates to an attachment for the bucket of a front end loader. In particular, the invention relates to a rake-tooth bucket attachment.
The background art is characterized by U.S. Pat. Nos. 2,597,374; 2,935,802; 3,034,237; 3,214,041; 3,349,933; 3,362,554; 3,643,821; 3,706,388; 3,834,567; 4,125,952; 4,411,585; 5,515,625; 5,564,885; 5,664,348; 6,092,606 and 6,209,236; and U.S. Des. Pat. No. 361,772; the disclosures of which patents are incorporated by reference as if fully set forth herein.
Richey in U.S. Pat. No. 2,597,374 discloses a material handling device. This invention is limited in that back and middle transverse members and at least one transverse rod forward of the bucket lip are not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
Wolfe et al. in U.S. Pat. No. 2,935,802 disclose a multi-function attachments carrier for farm loaders and the like. This invention is limited in that a middle transverse member and at least one transverse rod forward of the bucket lip are not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
Wolfe et al. in U.S. Pat. No. 3,034,237 disclose another multi-function attachments carrier for farm loaders and the like. This invention is limited in that a middle transverse members and at least one transverse rod forward of the bucket lip are not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
Walberg in U.S. Pat. No. 3,214,041 discloses a scoop for front end loaders. This invention is limited in that back and middle transverse members and at least one transverse rod forward of the bucket lip are not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
Simpson et al. in U.S. Pat. No. 3,349,933 disclose a pavement lifter. This invention is limited in that at limited in that a back transverse member and at least one transverse rod substantially forward of a middle transverse member and the bucket lip not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
Fortier in U.S. Pat. No. 3,362,554 discloses a rear-end hydraulic loader for a tractor. This invention is limited in that back and middle transverse members and at least one transverse rod forward of the bucket lip are not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
Viel in U.S. Pat. No. 3,643,821 discloses a front loader-type rock picker. This invention is limited in that back and middle transverse members and at least one transverse rod forward of the bucket lip are not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
Westendorf in U.S. Pat. No. 3,706,388 discloses a fork attachment for a loader bucket. This invention is limited in that at least one transverse rod forward of the bucket lip is not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
Miller in U.S. Pat. No. 3,834,567 discloses an adapter apparatus for a tractor. This invention is limited in that a back transverse member and at least one transverse rod forward of the bucket lip are not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
Jennings in U.S. Pat. No. 4,125,952 discloses a bucket attachment. This invention is limited in that at least one transverse rod forward of the bucket lip is not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
Quinn in U.S. Pat. No. 4,411,585 discloses a fork attachment for loader buckets. This invention is limited in that a middle transverse member and at least one transverse rod forward of the bucket lip are not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
Keigley in U.S. Pat. No. 5,515,625 discloses a rake attachment with scarifying teeth for a skid loader. This invention is limited in that back and middle transverse members and at least one transverse rod forward of the bucket lip are not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
Staben, Jr. in U.S. Pat. No. 5,564,885 discloses a multipurpose work attachment for a front end loader. This invention is limited in that at least one transverse rod forward of the bucket lip is not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
Omann in U.S. Pat. No. 5,664,348 discloses a rock and material loading apparatus. This invention is limited in that back and middle transverse members and at least one transverse rod forward of the bucket lip are not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
Basler in U.S. Pat. No. 6,092,606 discloses a stone gathering apparatus. This invention is limited in that at least one transverse rod forward of the bucket lip is not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
Omann in U.S. Pat. No. 6,209,236 discloses an actuated material loader with open fence. This invention is limited in that back and middle transverse members and at least one transverse rod forward of the bucket lip are not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
Hulsey in U.S. Pat. No. Des. 361,722 discloses a front end loader attachment for moving rocks. This invention is limited in that at least one transverse rod forward of the bucket lip is not provided to support the teeth. Neither do embodiments of the invention incorporate teeth that are pointed on both ends.
None of the individual references or combination of references teach the invention disclosed herein.
BRIEF SUMMARY OF THE INVENTION
One purpose of the invention is to enable an operator to use a front end loader, skid loader, utility tractor, all terrain vehicle (ATV) or any other power apparatus to sort unwanted material, e.g., small or large pieces of wood, rocks and waste products such as manure, from dirt and then to transfer the unwanted material into the bucket of the loader. Another purpose of the invention is to enable an operator to use a loader to level a work area while collecting unwanted material. Still another purpose of the invention is to provide an attachment for extending the reach of an existing loader and bucket to clean ditches. Another purpose is to loosen the surface of hard ground. Still another purpose is to carry materials with the bucket that would not otherwise be possible, such as round hay bales, trees, poles, etc.
One advantage of the invention is that can be quickly attached to a wide variety of front end loader buckets. Another advantage is that the teeth spacing and extension from the bucket allow the loader to be used for a wide variety of activities. Yet another advantage of the invention is its low cost. Another advantage is that the invention allows the operator better visibility to perform designated work.
In a preferred embodiment, the invention is an apparatus for attachment to the bucket of a front end loader, skip loader or any other power-operated bucket. The apparatus preferably comprises a plurality of teeth supported in a frame that attaches to the bucket of a front end loader. The placement and spacing of the teeth may vary according to dimensions of the material to be sorted. Preferably, the teeth are spaced about one and one half inches to about three and one half inches apart and more preferably abo
Batson Victor
Hunter Robert M
LandOfFree
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