{l}
SPECIFI~ATIONS
This tool inYention re~ers to an esrlier patent application;
Num~er 57~, 100-~;
File num~er ~1003;
~ iYision D-2; ~lass ~; Sub-class 4~;
filed on the ~ ~ctober 1~, entitled ~Material Surface Modific~tion~, hereinafter referred to as ~ondFace In that p~tent application reference is m~de in Claim 1 to ~on opparatus to form ~urrs~ This application for potent protection discloses an em~odiment of the said apporatus Mech~nical materi~l prepar~tion prior to adhesiYe ~onding is presently conrined to sandblasting, wirebrushing, grinding or similar r~ndom measures to roughen the surface The BondF~ce tool consists of a toothed ~lade which is m~de to enter the sur~ace of the material snd then moYe a prescri~ed ~nd constained amount The effect is to 'plow' or 'carYe' or 'te~r' a ~urrow into the surface to ~ prescri~ed depth, and in so doing, create '~urr' which is in f~ct the moteri~l displaced from the furrow by the carYing action o~ the toothed ~lade, each of whose teeth simultaneously produce replicos of the ~urr to the num~er, depth and spæing proYided for by the originol ~lsde ~nd tooth con~iguration This is occomplished ~y a relati~ely simple ~rrangement of toothed ~lodes, which in one configurotion, lie in a stack with eYery other ~lade's teeth facing in opposite directions Th~us the carYing or plowing of the furrow takes place simultaneously in opposite directions thereb~ 1eaYjr~9 the materi~l being preparedJ free from the requirement of clomping or other immo~ilization techniques In other words the force transmitted to the moteriol ~y the quite considera~l~ force re~uired to tear up numerous burrs in o hard moteriol, e g met~l) simult~neously in one oper~tion, is ~ nced in ~oth directions thereby c~ncelling e~ch other ~nd ne~ating m~teri~l re~ction in the form o~ unw~nted moYement Thus this tool c~n be ~pplied to ~ny ~re~
desired ~inoluding ~y computer oontro~), with freedom from the re4uirements o~ holding the m~teri~l s~Ye for ~ ~cking to resist the ~pplied pressure to the msteri~l's f~ce The tool ~ri~les include the num~er of teeth, the pitch o~ the teeth, the cutting ~ngles of e~ch tooth's cutting edge, the num~er of ~l~des, the o~er~ll size of the ~ssem~led row of ~l~des ~nd mnst import~ntly, the ~ertie~l p~th or depth of penetr~ti~n ~nd horizont~l poth or stroke, ~llowed for in the tool's design which goYerns the dimensions ~nd ch~r~cteristics of the ~urrs produced {2~
The ~urrs simultoneously produce~ ~y the opporotus desoribed herein, oon ~e en~ineered os to shope ~nd dimensionol ch~r~cteristios, throu~h the desi~n of the tooth outting ed~qe. Thus ~urrs thot ~re, ourled or strsi~ht or lon~ of thiok or fine or intermixed, eon ~e ore~ted t~y ~ondFoee for p~rticulor purposes. For exomple if t,urrs ore required th~t ~re to be used for heot embedment in o plostio moteri~l, then the tll~des teeth oon tle shoped to optimize tlurr ohorocteristios for the emtledment operotion, perh~ps with ~ se~ere ourl to pre~ent their disenqa~qement under str~in of use. ~urrs th~t will ~llow self-ol~mpin~ will wont to be str~i~qht ond Yertiool such thot the opposin~q tlurrs on the two pieoes to tle ossemtlled will entwine os the msteri~l is tlrou~ht to~qether with on ossem~ly foroe sufficient to tlend, fold ond orush the tlurrsJ thus o~usin~ their intermeshin~ with the result th~t the two pie~es will ~e immo~ilize~
ofter ~ssemtll~. Yet ~nother ~riotion mi~qht tle to roise thick burrs ~s little ~s possitlle so os to ollow the oopture of ~ fitlrous moteri~l, suoh os ~ql~ss fitlers, whioh will ~e clomped between the burr ond it's furrow os the ~urr is olosed tl~ok under ~ssembly pressure.
The tool hos as it's importont desi~qn feotures: o method of oontrollin~q the depth-p~th to whioh the teeth of the tool enter into the moteriol; o meons to o~use the teeth to e~r~e or plow ~ p~th into ~nd ~oross the materi~ y the ~l~des being displ~oed ~w~y from their st~rting position; ~ me~ns of retr~oting the ~l~des to ~llow diseng~gement of the tool from the m~teri~l ~fter the burrs h~ve ~een m~de ~nd to return the blades to the origin~l st~rting position re~dy for the next applio~tion; ~nd ~ me~ns of counterootinQ the Yeotor force p~r~llel to the m~terial's surf~ee ~ener~ted ~y the o~rYing or plowing ~otion, with ~n equ~l ~nd opposite foroe beinQ
gener~ted ~y the tool on the m~teri~l so as to preYent m~teri~l movement.
The o~er~ll size of the tool is ~ funetion of the ~re~ to ~e prep~red. There is no re~son~le upper limit ~s to the number of ~l~des, the number of teeth on the ~lodes, the lenQth of the ~l~des. The tool o~n ~lso ~e used in ~n ~re~ ~dj~cent to ~ burred ~re~ so ~s to enlorQe the prep~red ~re~, in st~ges. Using the tool ~rosswise to e~rlier prep~red ~reas is ~lso fe~si~le ~lthou~h some ~urrs will undou~tedly ~e ~eYered ~y this octicn.
In drowings whioh illustr~te em~odiments of the inYention, Figure 1 shows an orthoQraphic Yiew of one em~odiment of a four-bl~de p~ck without the supportinQ ~ssem~lies, showing the o~m grooves, Figure ~ shows the s~me em~odiment where the displocer h~s displooed the ~lodes horizont~lly in ~oth directions, Figure 3 shows one method of oontrollinQ the p~th of depth of penetrotion into the m~teri~l, Figure 4 shows the produoed ~urrs e~rYed into the m~teri~l in side-seotion eleY~tion/ with ~urrs of opposinQ form ~nd only two rowsJ illustr~ted, Fi~ure 5 shows ~nother ~l~de design inoor~or~ting ~ depth control ~s ~n inteQrol feoture, where the end teeth h~ve ~een shortened in height, 133762~
~ 3~
Figure 6 sho~s ~ side Yiew of ~ two ~lade ~ssem~ly with the depth oontrol ~rrongement det~iled in Figure 5, Figure 7 shows ~ side ~iew of the s~me em~odiment, where the teeth h~Ye penetroted to the depth ~llowed, ~nd the Yeotor foroe di~gr~m of the ~l~de moYement, Figure ~ shows how the ~lades in the p~ck ~re maint~ined in Yertio~l register, Figure 4 shows ~ top Yiew of one em~odiment where extern~l springs ~re used to return the ~lodes at ~ st~rting position, Figure 10 shows ~n end eleYotion Yiew o~ the s~me embodiment of ~1~de pook ~ut with the holderfdispl~cer positioned ~we, Figure 11 shows ~ side eleYation of the s~me em~odiment with the holderfdisplocer ~nd the return sprin~, Right ~l~des 1 h~Ye Teeth F~cin~ Right 4 ~nd Left ~lade 2 haYe Teeth F~oin~ Left 5 Cam GrooYes ~ on ~oth ~l~de types ~re offset from e~oh other ~y ~n ~mount determined ~y the desired ~urr length ~nd the desired Downw~rds ~eotor Foroe 1~ shown in fi~ure 7 ~ispl~oer 3 in fi~ure 1 is shown poised ~oYe the ~m GrooYes The ~ispl~cer fits into ~ Holder Assem~ly 20 ~nd ~1 in fi~ures 10 ~nd 11 When Displ~oer 3 is foroed into the groo~es 8, whioh m~ ~e seYer~l in num~er on o long ~l~de, e~oh with it's own ~ispl~oer, ~ result~nt Force Yeotor 12, proYides ~oth ~ -downwsrds foroe ~nd a horizont~l force whioh to~ether force ~11 the teeth simultsneously into Msterial A ~figures 6 and 7,~ in ~ presori~ed and oonstr~ined carYing path, oomprising 8 Depth of ~ut P~th 10, and l~ter~l psths in opposite direotions produoing Burrs B. Variations of the tooth design produoe burrs of the re~uired sh~pe nr shapes. In figure 3 o method of controlling the ~epth of ~ut Psth is ~ Pl~in Bl~de ~ which m~y ~e seYersl in num~er snd dispersed ~etween the ~lsdes of ~ multiple ~lade p~ck. The direotion of ~l~de ~oYement 6 ~nd 7 indioate th~t ~urrs with opposite-direction ourl will ~e simultaneously formed and with oounteraoting horizontal oarYing foroes applied to the material. ~sm GrooYes B shown in figure 6 indioate their missligment or offset. This offset is reduoed to zero, i.e., slignment, when the ~isplacer ~ is foroed into the ~am GrooYes by h Yertioal foroe app~ied to Holder ~0-21. FiQure e shows how the elsdes are maintained in Yertio~l olignment ~y Rollers 15 ~t eooh end of the ~lade psok. The Roller fits into Slot 16 formed in each end of e~ch ~l~de so th~t ~ lades will ~e ~ligned in the Yertio~l pl~ne and all the teeth are just touohinQ the m~teri~l. The Roller ~llo~f~ de~ir~d lstersl independent ~lade mo~ement ~ut constrsins all the ~lades to a uniform Yertioal motion into the material thus produoing the required ~epth 10 for 811 the ~urrs to ~e of thiokness 10.

~4~ 1 337622 Fi~ure ~ ~hows a top Yiew o~ the ~l~de p~ok with the ~oller~ 15 ~nd theExtension 1~ onto which Return Sprin~ tt~ches. For olorit~ the roller is shown unseated in the Slot 1~ ~lthough in pr~ctice the Rollers would be const~ntly in the slot ends due to Return Spring force. Also for cl~rityJ ~
Spoce 17 is depicted between the ~l~des in figures ~ ~nd 10 which m~y or m~y not be desir~le, ~ut shows the Roller to ~etter od~ntoge ~nd it's rel~tionship to the Slot 1~. The Holder ~OJ 2 1 jS ~3 simple f~bric~ted deYice with dimensions to engage ~nd st~ilize the bl~de p~ck ~etween 5ide Members ~OJ which olso holds the ~ispl~cer ~, the whole m~de rigid by the Cross Piece 21 to which the Side Mem~ers ~0 ~re firmly ~tt~ched.