CA2606891A1 - Utility knife - Google Patents
Utility knife Download PDFInfo
- Publication number
- CA2606891A1 CA2606891A1 CA 2606891 CA2606891A CA2606891A1 CA 2606891 A1 CA2606891 A1 CA 2606891A1 CA 2606891 CA2606891 CA 2606891 CA 2606891 A CA2606891 A CA 2606891A CA 2606891 A1 CA2606891 A1 CA 2606891A1
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- CA
- Canada
- Prior art keywords
- roller
- knife
- blade
- view
- wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Abstract
A knife including body including a blade head at one end and demountable roller at the other end, the blade head including a planar first guide cheek and planar second guide cheek, positioned at an angle, alpha relative a blade which is received between the first and second guide cheeks; a device for urging the blade between a retracted position and an extended position. The knife further including a device for attaching the roller to a roller end of the knife body, wherein the roller further including a right wheel half and a left wheel half such that the roller being comprised of two halves in intimate contact with each other.
Description
Title: UTtLITY KNIFE
Field of the Inventi+an [001 ] The present invention relates to knives, in particular relates to a u#ility knife having a retractable blade and replaceable roller.
Back.aroupd of the tnvention j002] The present invention is related to the Utility Knife described and patented under US
patent number 6,321,454 issued November 27, 2001 under the title I.Ttility Knife and that patent specification is incorporated herein for reference.
Brief I}eseri,gtion of the Drawings [003] The invention will now be described by way of example only with reference to the frallowing Figures in which:
Figure 1 is a left side perspective view of the kknifc.
Figure 2 is a right side perspective view of the knife.
Figure 3 is the left, side plan el.evationai view of the kriife..
Figure 4 is. a right side plan elevational view of the knife.
Figure 5 is a cut away plan view of the knife showing theintemal mechanism for the blade retraction system as well as the blade storage compartments with the blade in retracted position.
Figure 6 is a cut away plan view afthe knife showing the internal mechanism for the.
Z
blade retractiQn system as well as the blade storage compartments with the blade in the sexni-extended position.
Figure 7 is a cut away plan view of the knife showing th:e .internal mechariism for the blade retra.ction system as well as the blade stbrage cpmp.artinents with the blade in the extended position.
Figure 8 is an exploded assembly cut away perspective view of the blade and the knife showing the assembly of the blade with the blade housing together with a portion of the blade end.
Figure 9 is a cut away perspective view of the blade end with the blade in the retracted position.
Figure 10 is a cut away perspective view of the blade end with the blade in the semi-retraeted position.
Figure 11 is a cut away perspective view of the blade end with the blade in the extended position.., Figure 12. is an exploded asseinbly perspective view of the roller end of the knife showing the male roller and the female roller bushings.
Figure 13 is a left side perspective view of the male roller bushing.
Figure 14 is a left side perspective view pf the female roller bushing.:
Figure 15 is a right side perspective view of the male roller bushing.
Figure 16 is a right side perspective view af the female roller bushing..
Figure 17 is a partial perspective view ofthe roller end of the knife, without the roller bushing.
Figure 18 is an end plan view of the roller.
Figure 19 is an end plan view of the roller.
Figure 20 is a side plan view of the roller.
Figure 21 is a side plan view of the roller showing it diploid in the roller end ofthe knife in dotted lines.
Figure 22 is. a rear right side perspective view of an alternate embodiment, namely knife 210.
Figure 23 is an upright left side perspeetive vlew of the alternate embodiment, namely lwfe 210 shown in Figure 22.
Figure 24 is a left side elevational view of knife 210.
Figure 25 is a right side elevational view of knife 21 f?.
Figure 26 is an end plan view of left wheel half 252 and right wheel half 250 in the unassembled position.
Figure 27 is a perspective unassembled view of left wheel half 252 and right vFrheel.
half 250.
Figure 28 is an assembled elevational view ofleft wheel half252 and rightwheol half 254 in the pointed position 258.
Figure 29 is a perspective view of the roller 224. in the pointed positioned 258.
Figure_ 30 is a partial cut away perspective view of the roller end showing roller 222 In the pointed position assembled onto the end of knife 210.
Figure 31 is an elevational view of left wheel half 252 and right'whe.el half 250 in the.
urtas'sembled position.
Figure 32 is a perspective view of left wheei half 252 and right wheel half 250 in the unassembled position.
Figure 33 is an elevational view of left wheel half 252 and right wheel half 250 in an assembled groove position 260.
Figure 34 is a perspective view of wheel 222 in a groove position.
Fig.ttre 35 is a partial cut away perspective view of the roller arzd knife with the roller in the grooved position shown assernbled onto the roller end of the knife.
Detailed Descriptian of the Preferred Embod'unent ~.tetrac-tina Mechanism [0041 The present invention a utility knife shown. generally as 10 includes the follawing major components, body 12, blade end 14 containing blade 16, sliding retract button 18, guide aperture 20 and an opening hatch 30 with a thumb screw 32. Utility knife 10 also has a roller end 22 having a roller 24 and a raller attachtnent mechanism 25.
[005] Referring now to Figures 5 through 11 which show details of the blade:
retractYon~~. mechanism. Blade retraction mechanism includes a splined back wall 44 which is integrally part of the back portion of the interior backportion of body 12 which has numerous parallel equally spaced splines along the back wall vvhich,has the guide aperture 20 running centrally bisecting the spline back wall 44 for receipt of the retract button 18. Blade 16 is housed in blade housing 46 with noteh.es 44 having corresponding raised portions 51 defined in blade housing 46 for holding blade 16 in position in blade housing 46. The back side of blade housing 46 inclu.des blade housing splines 47 not shown in Figure 8 which cooperatively mesh with splines on spline back wall 44, thereby indexing blade housing 46 along the spline back wall 44 as. retract button 18 is urged either forwardly or backwardly along guide aperture 20. By urging retract button 18 backwardly, the blade can be positioned inretracted position 48 and by urging retract button 18 forwardly, the bald can be extended to the Wended positiQn shown as 50.
[0061 Furthermore; extra blades 40 can be stored tn blade storage compartment which is exposed by opening thumb screw 32 and opening, opening hatch 34 to expose the storage compartment 42. Opening hatch 30 not only exposes blade storage comparttnent, but also exposes the blade retract mechanism and allows one to replace cuttingblade 16 in the forward portion of the knife.
[0071 Knife 10 also includes; a first guide cheek I'02 and secon.d guide cheek which are planar guide cheeks, wherein the plan of the guide cheek is positioned at an angle alpha 106 relative to the plan of the blade 16. In other words, blade 16 is sandwiched between the two guide ckeeks, nainely first guide cheek 102 and second guide cheek 104, wherein the plan of each guide cheek is angled at a angle alpha 106 relative to the vertical plan of the blade as shown in Figures 1 and 2. Therefore, in the preferred embodiment, body 12 includes a blade head 108 having a first guide cheek 102 and a second guide cheek 104, eaeh of which are angled at a angle: alpha 106 relative to the plan of bia:de.116.
Replaceable Roller [008] The knife also has the additional feature of a replaceable rolier 24.:
Roller attachrnent mechanism 25 is shown in Figures 12 through 21 inclusively.
[009] Looking particularly now to Figure 12, the cornponents of roller attachment mechanism 25 includes roller 24, male roller bushing 72, female roller bushing 70, roller flanges 74 vvhich are situated on either side ofrolZer 24, Roller 24 further has a roller flange 74 which is a bearing surface upon which the roller turns.
j00101 Referring now to Figure L3 through 16, male roller bushing 72 includes bearirfg, surface. 84 and ,a threaded end 80 and an outer finger grip 82. Ferriale roller bushing 70 includes a bearing surface 88, a'threadecl aperture 86 and an outer finger grip 90. Threaded end 80 is adapted to mesh end and fit into threadedaperture 86.by applying xotational forces onto finger grips 82 and 90. In this way a roller 24 is mounted onto bearing surfaces 84 and 88, such that roller end or circumference 76 rise or rolls upon bearing surfaces 88 and :84 of the combined male and female roller bushing 70 and 72.
j0011] Figures. 22 through 35 depict an alternate etnbodiment of the present device, namely utility knife 210, .having the following major components, namely body 212 having mounted therein a blade channe1240', havingmounted therein a: blade 216. Blade channel.
integrally connected and projecting from blade channel 240 are a first guide cheek 202 and a second guide cheek 204 which are oriented at an angle of approximately 90 degrees relatiwe to each other. Body 212 has a roller end 222 having munted therean a roller 224. Rolier end 222 is dimensioned to place roller 224 spaced from. and below lower most part of bod.y 212. Body blade channel has connected thereto a retract button 218 for slideably moving blade 216 within blade channel 240 and also for loeking blade 216 at a preselected position within blade ch:anne1240.
[0012] Referring now to Figures 26 through 30, roller 224 can take on two positions namely pointed position 258 best; show in Figures 28 and 29 and groove position 260 as best shown in Figures 33 and 34., [00131 Roller .224 preferably is comprised :of two halves, namely wheel half 252 and right wheel half 250. Each wheel half has a chamfered surface 280, a large face 256 and a small face 254. By placing large far,e 256 adjacent to each other as shown. in Figure 28,, the, wheel halves are placed into a pointed..posit'ion 258 as shown in Figure 28 and 29. Roller 224 cannow be mounted onto the roller end 222 of utility knife 210 using a. screw 272 and a nut 274 as depicted in Figure 30. Screw 272 is receiued through hole 270 ftir rigidly maintaining left wheel half 242 and right wheel half 250 in intimate contact. In, point.ed position 258, small faces 254 of each wheel half form the external surfaces of roller 224;
[0014] Referring more specifically now to Figures 31 to 35, roller 224 can be placed into group position 260 by placing small face 254 of each wheel half in intimate contact as shown in. Figures 33 and 34. In this case, large face 256 of each wheel half, novt~ forms the outer surface, whereas the chamfered surface280 forms a groove along the outer diameter of roller 224.
[00151 In this manner by dismounting roller224 and spli.tting left wheel half Z52:away from right wheel b.alf 250-.., one can place roller 224 into either the pointed position 2:58 and/or the grooved position 260, which ever is preferable for the use at hand.
jO016] When one wishes to insert spline into a. groove for anchoring screen into a,.
fra.rne, one may wish to place roller 224 into groove position 260 in order to rnanipulate the spline into a groove.
[0017] On the other hand, if one :is wishing to crease wall paper, carpet and/or vinyl into a corner, it may be preferable to place roller 224 into pointed position.2.58 as shown in Figure 28.
[0018j It should be apparent to persons skilled in.the arts that various modifications and adaptation of this structure des.cribed above are possible without cleparture from the spirit: of the invention the scope ofwhich defined in the appended claim.
Field of the Inventi+an [001 ] The present invention relates to knives, in particular relates to a u#ility knife having a retractable blade and replaceable roller.
Back.aroupd of the tnvention j002] The present invention is related to the Utility Knife described and patented under US
patent number 6,321,454 issued November 27, 2001 under the title I.Ttility Knife and that patent specification is incorporated herein for reference.
Brief I}eseri,gtion of the Drawings [003] The invention will now be described by way of example only with reference to the frallowing Figures in which:
Figure 1 is a left side perspective view of the kknifc.
Figure 2 is a right side perspective view of the knife.
Figure 3 is the left, side plan el.evationai view of the kriife..
Figure 4 is. a right side plan elevational view of the knife.
Figure 5 is a cut away plan view of the knife showing theintemal mechanism for the blade retraction system as well as the blade storage compartments with the blade in retracted position.
Figure 6 is a cut away plan view afthe knife showing the internal mechanism for the.
Z
blade retractiQn system as well as the blade storage compartments with the blade in the sexni-extended position.
Figure 7 is a cut away plan view of the knife showing th:e .internal mechariism for the blade retra.ction system as well as the blade stbrage cpmp.artinents with the blade in the extended position.
Figure 8 is an exploded assembly cut away perspective view of the blade and the knife showing the assembly of the blade with the blade housing together with a portion of the blade end.
Figure 9 is a cut away perspective view of the blade end with the blade in the retracted position.
Figure 10 is a cut away perspective view of the blade end with the blade in the semi-retraeted position.
Figure 11 is a cut away perspective view of the blade end with the blade in the extended position.., Figure 12. is an exploded asseinbly perspective view of the roller end of the knife showing the male roller and the female roller bushings.
Figure 13 is a left side perspective view of the male roller bushing.
Figure 14 is a left side perspective view pf the female roller bushing.:
Figure 15 is a right side perspective view of the male roller bushing.
Figure 16 is a right side perspective view af the female roller bushing..
Figure 17 is a partial perspective view ofthe roller end of the knife, without the roller bushing.
Figure 18 is an end plan view of the roller.
Figure 19 is an end plan view of the roller.
Figure 20 is a side plan view of the roller.
Figure 21 is a side plan view of the roller showing it diploid in the roller end ofthe knife in dotted lines.
Figure 22 is. a rear right side perspective view of an alternate embodiment, namely knife 210.
Figure 23 is an upright left side perspeetive vlew of the alternate embodiment, namely lwfe 210 shown in Figure 22.
Figure 24 is a left side elevational view of knife 210.
Figure 25 is a right side elevational view of knife 21 f?.
Figure 26 is an end plan view of left wheel half 252 and right wheel half 250 in the unassembled position.
Figure 27 is a perspective unassembled view of left wheel half 252 and right vFrheel.
half 250.
Figure 28 is an assembled elevational view ofleft wheel half252 and rightwheol half 254 in the pointed position 258.
Figure 29 is a perspective view of the roller 224. in the pointed positioned 258.
Figure_ 30 is a partial cut away perspective view of the roller end showing roller 222 In the pointed position assembled onto the end of knife 210.
Figure 31 is an elevational view of left wheel half 252 and right'whe.el half 250 in the.
urtas'sembled position.
Figure 32 is a perspective view of left wheei half 252 and right wheel half 250 in the unassembled position.
Figure 33 is an elevational view of left wheel half 252 and right wheel half 250 in an assembled groove position 260.
Figure 34 is a perspective view of wheel 222 in a groove position.
Fig.ttre 35 is a partial cut away perspective view of the roller arzd knife with the roller in the grooved position shown assernbled onto the roller end of the knife.
Detailed Descriptian of the Preferred Embod'unent ~.tetrac-tina Mechanism [0041 The present invention a utility knife shown. generally as 10 includes the follawing major components, body 12, blade end 14 containing blade 16, sliding retract button 18, guide aperture 20 and an opening hatch 30 with a thumb screw 32. Utility knife 10 also has a roller end 22 having a roller 24 and a raller attachtnent mechanism 25.
[005] Referring now to Figures 5 through 11 which show details of the blade:
retractYon~~. mechanism. Blade retraction mechanism includes a splined back wall 44 which is integrally part of the back portion of the interior backportion of body 12 which has numerous parallel equally spaced splines along the back wall vvhich,has the guide aperture 20 running centrally bisecting the spline back wall 44 for receipt of the retract button 18. Blade 16 is housed in blade housing 46 with noteh.es 44 having corresponding raised portions 51 defined in blade housing 46 for holding blade 16 in position in blade housing 46. The back side of blade housing 46 inclu.des blade housing splines 47 not shown in Figure 8 which cooperatively mesh with splines on spline back wall 44, thereby indexing blade housing 46 along the spline back wall 44 as. retract button 18 is urged either forwardly or backwardly along guide aperture 20. By urging retract button 18 backwardly, the blade can be positioned inretracted position 48 and by urging retract button 18 forwardly, the bald can be extended to the Wended positiQn shown as 50.
[0061 Furthermore; extra blades 40 can be stored tn blade storage compartment which is exposed by opening thumb screw 32 and opening, opening hatch 34 to expose the storage compartment 42. Opening hatch 30 not only exposes blade storage comparttnent, but also exposes the blade retract mechanism and allows one to replace cuttingblade 16 in the forward portion of the knife.
[0071 Knife 10 also includes; a first guide cheek I'02 and secon.d guide cheek which are planar guide cheeks, wherein the plan of the guide cheek is positioned at an angle alpha 106 relative to the plan of the blade 16. In other words, blade 16 is sandwiched between the two guide ckeeks, nainely first guide cheek 102 and second guide cheek 104, wherein the plan of each guide cheek is angled at a angle alpha 106 relative to the vertical plan of the blade as shown in Figures 1 and 2. Therefore, in the preferred embodiment, body 12 includes a blade head 108 having a first guide cheek 102 and a second guide cheek 104, eaeh of which are angled at a angle: alpha 106 relative to the plan of bia:de.116.
Replaceable Roller [008] The knife also has the additional feature of a replaceable rolier 24.:
Roller attachrnent mechanism 25 is shown in Figures 12 through 21 inclusively.
[009] Looking particularly now to Figure 12, the cornponents of roller attachment mechanism 25 includes roller 24, male roller bushing 72, female roller bushing 70, roller flanges 74 vvhich are situated on either side ofrolZer 24, Roller 24 further has a roller flange 74 which is a bearing surface upon which the roller turns.
j00101 Referring now to Figure L3 through 16, male roller bushing 72 includes bearirfg, surface. 84 and ,a threaded end 80 and an outer finger grip 82. Ferriale roller bushing 70 includes a bearing surface 88, a'threadecl aperture 86 and an outer finger grip 90. Threaded end 80 is adapted to mesh end and fit into threadedaperture 86.by applying xotational forces onto finger grips 82 and 90. In this way a roller 24 is mounted onto bearing surfaces 84 and 88, such that roller end or circumference 76 rise or rolls upon bearing surfaces 88 and :84 of the combined male and female roller bushing 70 and 72.
j0011] Figures. 22 through 35 depict an alternate etnbodiment of the present device, namely utility knife 210, .having the following major components, namely body 212 having mounted therein a blade channe1240', havingmounted therein a: blade 216. Blade channel.
integrally connected and projecting from blade channel 240 are a first guide cheek 202 and a second guide cheek 204 which are oriented at an angle of approximately 90 degrees relatiwe to each other. Body 212 has a roller end 222 having munted therean a roller 224. Rolier end 222 is dimensioned to place roller 224 spaced from. and below lower most part of bod.y 212. Body blade channel has connected thereto a retract button 218 for slideably moving blade 216 within blade channel 240 and also for loeking blade 216 at a preselected position within blade ch:anne1240.
[0012] Referring now to Figures 26 through 30, roller 224 can take on two positions namely pointed position 258 best; show in Figures 28 and 29 and groove position 260 as best shown in Figures 33 and 34., [00131 Roller .224 preferably is comprised :of two halves, namely wheel half 252 and right wheel half 250. Each wheel half has a chamfered surface 280, a large face 256 and a small face 254. By placing large far,e 256 adjacent to each other as shown. in Figure 28,, the, wheel halves are placed into a pointed..posit'ion 258 as shown in Figure 28 and 29. Roller 224 cannow be mounted onto the roller end 222 of utility knife 210 using a. screw 272 and a nut 274 as depicted in Figure 30. Screw 272 is receiued through hole 270 ftir rigidly maintaining left wheel half 242 and right wheel half 250 in intimate contact. In, point.ed position 258, small faces 254 of each wheel half form the external surfaces of roller 224;
[0014] Referring more specifically now to Figures 31 to 35, roller 224 can be placed into group position 260 by placing small face 254 of each wheel half in intimate contact as shown in. Figures 33 and 34. In this case, large face 256 of each wheel half, novt~ forms the outer surface, whereas the chamfered surface280 forms a groove along the outer diameter of roller 224.
[00151 In this manner by dismounting roller224 and spli.tting left wheel half Z52:away from right wheel b.alf 250-.., one can place roller 224 into either the pointed position 2:58 and/or the grooved position 260, which ever is preferable for the use at hand.
jO016] When one wishes to insert spline into a. groove for anchoring screen into a,.
fra.rne, one may wish to place roller 224 into groove position 260 in order to rnanipulate the spline into a groove.
[0017] On the other hand, if one :is wishing to crease wall paper, carpet and/or vinyl into a corner, it may be preferable to place roller 224 into pointed position.2.58 as shown in Figure 28.
[0018j It should be apparent to persons skilled in.the arts that various modifications and adaptation of this structure des.cribed above are possible without cleparture from the spirit: of the invention the scope ofwhich defined in the appended claim.
Claims (7)
1. A knife comprising:
(a) a body including a blade head at one end and demountable roller at the other end;
(b) the blade head including a planar first guide cheek and planar second guide cheek, positioned at an, angle, alpha relative a blade which is received between the first and second guide cheeks;
(c) a means for urging said blade between a retracted position and an extended position.
(a) a body including a blade head at one end and demountable roller at the other end;
(b) the blade head including a planar first guide cheek and planar second guide cheek, positioned at an, angle, alpha relative a blade which is received between the first and second guide cheeks;
(c) a means for urging said blade between a retracted position and an extended position.
2. The knife claimed in claim 1, further including a means for attaching said roller to a roller end of said knife body.
3. The knife claimed in claim 2, wherein said attaching means further includes male roller bushing cooperatively fastening with a female roller bushing for fastening the roller to a roller inner circumference defined in the roller end of said body of said knife.
4. The knife claimed in claim 2, wherein said roller further including a right wheel half and a left wheel half such that the roller being comprised of two halves in intimate contact with each other.
5. The knife claimed in claim 4, wherein each wheel half including a small face and a large face and a chamfered surface.
6. The knife claimed in claim 5, wherein the wheel being selectively mountable in a pointed position or in a grooved position wherein the wheel in a pointed position the large faces are mounted adjacent each other and when wheel in grooved position the small faces are mounted adjacent each other.
7. The knife claimed in claim 2 wherein the roller end is dimensioned to place roller 224 spaced from and below lower most part of body 212
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US82968706P | 2006-10-17 | 2006-10-17 | |
| US60/829,687 | 2006-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2606891A1 true CA2606891A1 (en) | 2008-04-17 |
Family
ID=39315287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2606891 Abandoned CA2606891A1 (en) | 2006-10-17 | 2007-10-15 | Utility knife |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2606891A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010116154A1 (en) * | 2009-04-09 | 2010-10-14 | Carlo Bruno Chiarella | Hand tool |
-
2007
- 2007-10-15 CA CA 2606891 patent/CA2606891A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010116154A1 (en) * | 2009-04-09 | 2010-10-14 | Carlo Bruno Chiarella | Hand tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |
Effective date: 20150709 |