Plant husbandry – Grafting
Reexamination Certificate
2001-11-07
2003-06-10
Poon, Peter M. (Department: 3643)
Plant husbandry
Grafting
C047S00101T, C047S00101T
Reexamination Certificate
active
06574916
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a plant grafting system and more particularly pertains to automatically coupling the upper portion of a lower plant with the lower portion of an upper plant in a safe and efficient manner.
2. Description of the Prior Art
The use of grafting devices of known designs and configurations is known in the prior art. More specifically, grafting devices of known designs and configurations previously devised and utilized for the purpose of grafting plants through known methods and apparatuses are known to consist basically of familiar, expected, and obvious structural configurations, notwithstanding the myriad of designs encompassed by the crowded prior art which has been developed for the fulfillment of countless objectives and requirements.
By way of example, U.S. Pat. No. 3,969,843 to Wahl, et al discloses a device for grafting grapevines. U.S. Pat. No. 4,014,132 to Cook discloses a method and apparatus for horticultural grafting. U.S. Pat. No. 4,154,020 to Paz, et al. discloses a process for the propagation of rose plants. U.S. Pat. No. 4,654,999 to Raggett discloses a cuttinc device. U.S. Pat. No. 4,769,944 to Fresne et al. discloses a grafting machine. U.S. Pat. No. 4,839,986 to Grantham discloses a grafting apparatus. U.S. Pat. No. 5,099,600 to Crawford et al. discloses a paraffin wax grafting technique and apparatus. U.S. Pat. No. 5,209,011 to Mori et al. discloses an apparatus for grafting immature plants. U.S. Pat. No. 5,444,938 to Pissenberger discloses a device for vee- grafting. Lastly, U.S. Pat. No. 6,148,560 to Hagen et al. discloses a grafting machine.
While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not describe a plant grafting system that allows automatically coupling the upper portion of a lower plant with the lower portion of an upper plant in a safe and efficient manner.
In this respect, the plant grafting system according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in doing so provides an apparatus primarily developed for the purpose of automatically coupling the upper portion of a lower plant with the lower portion of an upper plant in a safe and efficient manner.
Therefore, it can be appreciated that there exists a continuing need for a new and improved plant grafting system which can be used for automatically coupling the upper portion of a lower plant with the lower portion of an upper plant in a safe and efficient manner. In this regard, the present invention substantially fulfills this need.
SUMMARY OF THE INVENTION
In view of the foregoing disadvantages inherent in the known types of grafting devices of known designs and configurations now present in the prior art, the present invention provides an improved plant grafting system. As such, the general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new and improved plant grafting system and method which has all the advantages of the prior art and none of the disadvantages.
To attain this, the present invention essentially comprises a work table. The work table has an upper horizontal surface for the receipt and retention of various components of the system. Next provided is a cutter assembly. The cutter assembly is positioned on the work surface. The cutter assembly has a cutter support. The cutter support has a pair of V-shaped upper razors. The cutter support also has a pair of V-shaped lower razors. The cutter support further has a spring-biased retention finger. The retention finger extends forwardly through a space between the lower razors. A holder/insertion assembly is provided next. The holder/insertion assembly is positioned on the work surface laterally spaced from the cutter assembly. An operational space is defined there between. The holder assembly includes an upper block. The upper block has an associated upper clamp. The upper clamp retains the lower portion of the upper plant. The upper clamp is laterally spaced from the upper razors. A lower block is provided. The lower block has an associated lower clamp. The lower clamp is provided beneath the upper block and upper clamp for holding the upper portion of the lower plant. An intermediate block is provided between the upper and lower block laterally spaced from the lower razors. An intermediate member is provided to locate the ends of the plants with respect to the blocks and razors. Provided next is a first horizontal drive cylinder. The first horizontal drive cylinder is provided to move the cutter assembly and razors laterally between a rest position and a cutting position. The drive cylinder is provided adjacent to the upper support and intermediate support. The drive cylinder is provided for cutting a V-shaped recess in the upper portion of the lower plant. The drive cylinder is also provided for cutting a V-shaped projection in the lower portion of the upper plant. The drive cylinder further provides for the advancement of the retention finger. In this manner a central portion of the lower plant is clamped into contact with the lower support prior to cutting. The first horizontal drive cylinder is further adapted to retract the cutting assembly away from the blocks after cutting. A second horizontal drive cylinder is provided. The drive cylinder is provided to laterally shift the intermediate block between a rest location between the upper and lower blocks for cutting of the plants and a remote location laterally offset from the rest position for coupling of the plants. A vertical drive cylinder is provided to move the upper block and clamp between a raised position for cutting of the plant and a lowered position whereby the V-shaped projection of the upper plant is in frictional contact with and retained by the V-shaped recess in the upper portion of the lower plant. A pneumatic activator is provided. The activator is positioned with respect to the intermediate block. In this manner a flow of pressurized air is provided to eject the uppermost portion of the lower plant from the central support after cutting. Provided next is an upper clamp drive. The upper clamp moves the upper clamp between a locking location adjacent to the upper block for holding the upper plant prior to and during a cut and an unlocking location remote from the upper block after grafting. Further provided is a lower clamp drive. The lower clamp drive moves the lower clamp between a locking location and an unlocking location. The locking location is adjacent to the intermediate block for holding the lower plant prior to and during a cut. The unlocking location is remote from the intermediate block after grafting. Last provided is a control assembly. The control assembly includes first button. This button drives the upper clamp drive and the upper clamp from the unlocking position to the locking position. A second button is provided. The second button drives the lower clamp drive and the lower clamp from the unlocking position and locking position. Also provided are third and fourth buttons to be depressed simultaneously to sequentially and automatically drive the first horizontal drive cylinder and the cutter assembly between the rest position and the cutting position, then to drive the second horizontal drive cylinder and the intermediate block between a rest location and a remote location, and then to drive the vertical drive cylinder and the upper block and clamp between a raised position and a lowered position, and finally to engage the pneumatic activator.
There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood and in order that the present contribution to the art may be better appreciated. There are, of course, additional features of the invention that will be described hereinafter and which will form the subject matter of the claims attached.
In this respect, befor
Gellner Jeffrey L.
Poon Peter M.
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