CA2191511C - Cutting assembly for removing windshield - Google Patents
Cutting assembly for removing windshield Download PDFInfo
- Publication number
- CA2191511C CA2191511C CA 2191511 CA2191511A CA2191511C CA 2191511 C CA2191511 C CA 2191511C CA 2191511 CA2191511 CA 2191511 CA 2191511 A CA2191511 A CA 2191511A CA 2191511 C CA2191511 C CA 2191511C
- Authority
- CA
- Canada
- Prior art keywords
- blade
- windshield
- shaft
- bed
- inches
- 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.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B7/00—Hand knives with reciprocating motor-driven blades
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Knives (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The cutting assembly functions to sever the urethane bed bonding a windshield to a vehicle. The assembly comprises a reciprocating air gun connected with a cutting blade by a shaft. The blade has a straight front cutting edge about 4 inches in width. The blade is reciprocated in and out of the bed to sever it.
Description
2 This invention relates to an assembly and method for separating a glass 3 windshield from a vehicle urethane bed by severing the bed along its length.
In the process of securing a glass windshield to a new car or truck, the 6 manufacturer first extrudes a bead or "bed" of urethane onto the "pinch weld" extending 7 around the perimeter of the window opening. The urethane bed bonds to the pinch 8 weld surface. The glass windshield then is seated on the bed and bonds to it, forming 9 a liquid-tight seal.
The urethane bed is hard and tough and not easily penetrated. It 11 commonly has a thickness of about 1/4 inch and width of about 1/3 - 3/4 inches, 12 widening to about 3-1/2 - 4" at the corners.
13 If the windshield is to be replaced, an installer severs the bed along its 14 length, just beneath the inside surface of the glass, leaving the base portion of the bed in place. He then primes the cut surface of the bed, deposits a new bead of urethane 16 on the primed surface and seats the replacement windshield onto the fresh bead to 17 bond it in place.
18 Up to about the end of the 1980's installers used a manually operated 19 knife to sever the urethane bed. The knife was generally L-shaped, having a narrow sharpened blade and a shank or handle equipped with hand grips. The installer would 21 first work the point of the blade inwardly to penetrate the bed and would then 22 reciprocate the blade with short in and out strokes while pulling the blade sideways to 23 saw through the urethane bed along its length.
219~~~.~
1 Commencing about 1990, two types of powered tools were introduced 2 commercially, to replace the manually operated tools. These powered tools mimicked 3 the manually operated knife in several structural and operational respects.
4 The first type of tool involved an L-shaped blade and shank powered by an electric motor. The blade was oscillated from side to side. The blade was pointed 6 at its end and narrow (about 1/2 inch wide), to facilitate initial manual penetration. The 7 side edge of the blade was sharpened, so that a lateral cutting action was produced.
8 The second type of tool involved reciprocating a blade which would 9 extend in and out of a sleeve. The blade was actuated by an electric motor.
Again, the blade was pointed and narrow (about 1/2 inch width), to facilitate initial penetration.
11 The "throw" or distance advanced by the blade was short, about 1/2 inch.
12 In use, these tools were characterized by several problems. More 13 particularly:
14 Cutting with them was slow. The depth and width of the cut were small, requiring a great many cuts to complete the job.
Typically 16 it would take about 15 - 20 minutes to cut the windshield free;
17 Using the prior art assemblies was laborious. The installer would 18 have to apply a sideways pull to these tools, particularly when 19 cutting along the horizontal legs of the bed;
It was common to crack the glass when first penetrating the bed.
21 This could leave broken glass on the dash and elsewhere, which 22 was undesirable;
~191~11 1 The cuts made by the tools were shallow. One could only cut 2 into the bed with these tools about 1/2 inch at a time.
This meant 3 that at the corners, where the bed width was greatest, it would 4 take prolonged cutting to complete severing the bed. In practice, the installer would revert to using a hand knife at the corners or 6 would break off the glass at the corners and have to later 7 complete the cut by hand of the corner urethane with its 8 embedded glass. In the course of hand cutting the corners, the 9 installer would commonly press hard with his head against the windshield to assist his cutting - this was known to lead to neck 11 injuries;
12 The cut surface produced by the blades of these powered tools 13 was irregular (jagged and undulating). This was undesirable as 14 the newly extruded bead would in part reproduce this underlying irregularity and the new windshield would then not seat flush 16 against the bed surface. This could lead to a poor seal and 17 subsequent leaking;
18 The electric motor-driven tools of the prior art were generally 19 bulky and difficult to work with in confined space, such as the apex between the vehicle dashboard and the inside surface of 21 the windshield;
22 The prior art blades were fragile and expensive - breakage was 23 a problem; and 1 It was necessary to use soapy water as a coolant and lubricant 2 for the narrow, rapidly moving blades. After the cut was 3 complete, the cut surface needed to be carefully washed to 4 remove soap, as it was detrimental to getting a good bond when new urethane was laid on.
8 The preferred form of the invention involves combining the following 9 features:
using a reciprocating air gun which delivers a high impact blow 11 with a stroke length of about 1/2 inch;
12 matching the air gun with a wide, flat blade having a transverse, 13 straight front cutting edge which is at least 2 inches wide and 14 preferably is about 4 inches wide. The blade should be stiff but have sufficient lateral flexibility so as to conform to the curvature 16 of the windshield when manually pressed thereagainst -17 preferably the blade can be about 4 inches in length and formed 18 of about .05 inch thick stainless steel. The blade should also 19 narrow from its front cutting edge to its rear connection end.
This allows the blade to be twisted by the user as it is being 21 worked around a corner;
The urethane bed is hard and tough and not easily penetrated. It 11 commonly has a thickness of about 1/4 inch and width of about 1/3 - 3/4 inches, 12 widening to about 3-1/2 - 4" at the corners.
13 If the windshield is to be replaced, an installer severs the bed along its 14 length, just beneath the inside surface of the glass, leaving the base portion of the bed in place. He then primes the cut surface of the bed, deposits a new bead of urethane 16 on the primed surface and seats the replacement windshield onto the fresh bead to 17 bond it in place.
18 Up to about the end of the 1980's installers used a manually operated 19 knife to sever the urethane bed. The knife was generally L-shaped, having a narrow sharpened blade and a shank or handle equipped with hand grips. The installer would 21 first work the point of the blade inwardly to penetrate the bed and would then 22 reciprocate the blade with short in and out strokes while pulling the blade sideways to 23 saw through the urethane bed along its length.
219~~~.~
1 Commencing about 1990, two types of powered tools were introduced 2 commercially, to replace the manually operated tools. These powered tools mimicked 3 the manually operated knife in several structural and operational respects.
4 The first type of tool involved an L-shaped blade and shank powered by an electric motor. The blade was oscillated from side to side. The blade was pointed 6 at its end and narrow (about 1/2 inch wide), to facilitate initial manual penetration. The 7 side edge of the blade was sharpened, so that a lateral cutting action was produced.
8 The second type of tool involved reciprocating a blade which would 9 extend in and out of a sleeve. The blade was actuated by an electric motor.
Again, the blade was pointed and narrow (about 1/2 inch width), to facilitate initial penetration.
11 The "throw" or distance advanced by the blade was short, about 1/2 inch.
12 In use, these tools were characterized by several problems. More 13 particularly:
14 Cutting with them was slow. The depth and width of the cut were small, requiring a great many cuts to complete the job.
Typically 16 it would take about 15 - 20 minutes to cut the windshield free;
17 Using the prior art assemblies was laborious. The installer would 18 have to apply a sideways pull to these tools, particularly when 19 cutting along the horizontal legs of the bed;
It was common to crack the glass when first penetrating the bed.
21 This could leave broken glass on the dash and elsewhere, which 22 was undesirable;
~191~11 1 The cuts made by the tools were shallow. One could only cut 2 into the bed with these tools about 1/2 inch at a time.
This meant 3 that at the corners, where the bed width was greatest, it would 4 take prolonged cutting to complete severing the bed. In practice, the installer would revert to using a hand knife at the corners or 6 would break off the glass at the corners and have to later 7 complete the cut by hand of the corner urethane with its 8 embedded glass. In the course of hand cutting the corners, the 9 installer would commonly press hard with his head against the windshield to assist his cutting - this was known to lead to neck 11 injuries;
12 The cut surface produced by the blades of these powered tools 13 was irregular (jagged and undulating). This was undesirable as 14 the newly extruded bead would in part reproduce this underlying irregularity and the new windshield would then not seat flush 16 against the bed surface. This could lead to a poor seal and 17 subsequent leaking;
18 The electric motor-driven tools of the prior art were generally 19 bulky and difficult to work with in confined space, such as the apex between the vehicle dashboard and the inside surface of 21 the windshield;
22 The prior art blades were fragile and expensive - breakage was 23 a problem; and 1 It was necessary to use soapy water as a coolant and lubricant 2 for the narrow, rapidly moving blades. After the cut was 3 complete, the cut surface needed to be carefully washed to 4 remove soap, as it was detrimental to getting a good bond when new urethane was laid on.
8 The preferred form of the invention involves combining the following 9 features:
using a reciprocating air gun which delivers a high impact blow 11 with a stroke length of about 1/2 inch;
12 matching the air gun with a wide, flat blade having a transverse, 13 straight front cutting edge which is at least 2 inches wide and 14 preferably is about 4 inches wide. The blade should be stiff but have sufficient lateral flexibility so as to conform to the curvature 16 of the windshield when manually pressed thereagainst -17 preferably the blade can be about 4 inches in length and formed 18 of about .05 inch thick stainless steel. The blade should also 19 narrow from its front cutting edge to its rear connection end.
This allows the blade to be twisted by the user as it is being 21 worked around a corner;
,, 1 ~ connecting the blade with the gun with a slender, elongate, 2 substantially rigid shaft which will transmit the impact yet can 3 extend into the narrow apex space between the dashboard and 4 the windshield while spacing the gun well away from this confined area;
6 . the blade and shaft being substantially coplanar so there are no 7 significant protrusions at the connection point between blade 8 and shaft.
9 It has been found that this combination provides a windshield removal assembly having the following attributes:
11 ~ The air gun is capable of driving the wide blade into the tough 12 urethane bed to make a clean incision without damage to the 13 bed;
14 ~ The cutting stroke and blade are sufficiently long to enable the blade to cut through even the wide corners of the bed - this can 16 typically be accomplished in 4 or 5 strokes;
17 ~ No side pull is required - the blade cuts with an in and out 18 stroke. The installer need only support and guide the device 19 and does not need to press with his head against the inner surface of the windshield;
1 . Narrowing the blade from front to back enables the user to twist 2 it somewhat to facilitate cutting at the corners and minimizes 3 having protruding structure at the connection point of blade and 4 shaft, which could cause damage to the dashboard or windshield;
6 ~ Surprisingly, the cut surtace of the bed is found to be smooth 7 and free of irregularities;
8 ~ Blade breakage is reduced; and 9 ~ The removal of a windshield is accomplished in about 3 minutes as compared to the 15 - 20 minutes required for the prior art 11 assemblies.
12 In one broad aspect, the invention involves a windshield removal 13 assembly for cutting a urethane bed securing a glass windshield having a curved 14 surface to a vehicle at an edge of a windshield opening formed by the vehicle, there being a narrowing apex space between the windshield and a vehicle part forming the 16 opening, comprising: a reciprocating air gun; a rigid, elongated shaft having inner 17 and outer ends and being connected at the inner end of said shaft with the gun for 18 reciprocation thereby; and a flat thin steel blade of substantially constant thickness, 19 said blade having front and rear ends, the blade rear end being connected to the shaft's outer end, the blade being substantially coplanar with the shaft, the blade 21 having a substantially straight front edge which is beveled on one side only to provide 22 a non-sharpened top edge and a sharpened bottom cutting edge, the blade 23 narrowing from the front end to the rear end of the blade to about the width of the 24 shaft, the blade being sufficiently rigid to cut the urethane bed when reciprocated by 1 the air gun but having sufficient lateral flexibility to conform to the curved surtace of 2 the windshield when pressed thereagainst; the shaft being operative to space the 3 blade from the gun sufficiently to allow the assembly to be used within the confines of 4 the apex space; the air gun being operative to reciprocate the shaft and blade with sufficient force to advance the blade through the urethane bed; the blade being 6 configured so that the non-sharpened top edge of the blade can be pressed against 7 the glass of the windshield while the sharpened bottom cutting edge penetrates the 8 urethane bed.
9 In another broad aspect, the invention involves a method for separating a glass windshield from a vehicle urethane bed, comprising: providing a reciprocating 11 air gun having a cutting tool mounted thereto for reciprocation thereby, said cutting 12 tool comprising a shaft connected at one end with the gun and at the other end with a 13 flat blade having a front cutting edge of at least 2 inches width;
reciprocating the 14 blade longitudinally, into and out of the bed, and severing the bed across its width;
and progressively moving the blade along the length of the bed to sever it completely 16 and leave a smooth cut surtace.
19 Figure 1 is an isometric view showing the cutting assembly;
Figure 2 is a top plan elevation of the blade and shaft portion of the cutting tool 21 of Figure 1;
22 Figure 3 is a side elevation, partly in section, showing the assembly of Figure 23 1; and 24 Figure 4 is a schematic side view showing part of the cutting assembly in use.
3 The cutting assembly 1 comprises a reciprocating air gun 2 and a cutting tool 4 comprised of a shaft 3 and blade 4.
The air gun 2 is commercially available. An Ingersoll Rand Pneumatic model 6 #117 or a Chicago Pneumatic model # CP715 gun is suitable. These guns can 7 deliver high impact strokes to advance the blade 4 through the urethane bed 24.
8 The shaft 3 is a 3/4 inch diameter steel rod having an inner end 5 9 conventionally shaped to connect with the air gun 2. At its outer end 6, a slot 7 extends inwardly to receive the shank 8 of the blade 4. The upper surtace of the rod 11 end 6 forms a recess 9. The rod end 6 further forms bolt holes 10 extending 12 transversely therethrough. Nuts 11 and bolts 12 are received in the recess 9 and 13 holes 10 to secure the blade shank 8 to the rod end 6.
14 The blade 4 is substantially bell-shaped, is formed of stainless steel, has a width at the front edge 20 of about 4 inches, a length of 6 inches and a thickness of 16 .05 inches. While it is substantially rigid, it has sufficient lateral flexibility so that it will 17 conform to the windshield curvature when pressed thereagainst. The blade 4 18 includes a 2 inch long shank 8 which is received in the rod slot 7. The blade 4 19 narrows from front to rear and its shank 8 has about the same width as the shaft 3, so that there are no significant lateral protrusions at the connection point. The front edge 21 20 is straight and sharpened. More specifically, the front edge 20 is beveled on one 22 side only to produce a top unsharpened edge which bears against the glass of the 23 windshield and a bottom sharpened cutting edge which penetrates the urethane bed 24 24 when the assembly is in use.
<I
1 As shown in Figure 4, the urethane bed 24 is bonded to the surface of the 2 pinch weld 25 extending around the perimeter of the window opening.
3 When assembled and operated, the blade 4 reciprocates with a throw or travel 4 of about 1 /2 inch. The blade is pressed against the inside surtace 22 of the glass windshield 23 and is driven into the urethane bed 24. The blade 4 flexes to conform 6 with the curvature of the windshield 23 with its unsharpened edge contacting the 7 glass and its sharpened edge penetrating into the urethane bed. It severs the bed 8 just beneath the glass. The installer moves the assembly along the length of the bed 9 by withdrawing the blade from the urethane, moving it to the next adjacent cut position and then again driving the blade in.
11 ~ The air gun is capable of driving the wide blade into the tough 12 urethane bed to make a clean incision without damage to the 13 bed;
14 ~ The cutting stroke and blade are sufficiently long to enable the blade to cut through even the wide corners of the bed - this can 16 typically be accomplished in 4 or 5 strokes;
17 ~ No side pull is required - the blade cuts with an in and out 18 stroke. The installer need only support and guide the device 19 and does not need to press with his head against the inner surface of the windshield;
1 . Narrowing the blade from front to back enables the user to twist 2 it somewhat to facilitate cutting at the corners and minimizes 3 having protruding structure at the connection point of blade and 4 shaft, which could cause damage to the dashboard or windshield;
6 ~ Surprisingly, the cut surtace of the bed is found to be smooth 7 and free of irregularities;
8 ~ Blade breakage is reduced; and 9 ~ The removal of a windshield is accomplished in about 3 minutes as compared to the 15 - 20 minutes required for the prior art 11 assemblies.
12 In one broad aspect, the invention involves a windshield removal 13 assembly for cutting a urethane bed securing a glass windshield having a curved 14 surface to a vehicle at an edge of a windshield opening formed by the vehicle, there being a narrowing apex space between the windshield and a vehicle part forming the 16 opening, comprising: a reciprocating air gun; a rigid, elongated shaft having inner 17 and outer ends and being connected at the inner end of said shaft with the gun for 18 reciprocation thereby; and a flat thin steel blade of substantially constant thickness, 19 said blade having front and rear ends, the blade rear end being connected to the shaft's outer end, the blade being substantially coplanar with the shaft, the blade 21 having a substantially straight front edge which is beveled on one side only to provide 22 a non-sharpened top edge and a sharpened bottom cutting edge, the blade 23 narrowing from the front end to the rear end of the blade to about the width of the 24 shaft, the blade being sufficiently rigid to cut the urethane bed when reciprocated by 1 the air gun but having sufficient lateral flexibility to conform to the curved surtace of 2 the windshield when pressed thereagainst; the shaft being operative to space the 3 blade from the gun sufficiently to allow the assembly to be used within the confines of 4 the apex space; the air gun being operative to reciprocate the shaft and blade with sufficient force to advance the blade through the urethane bed; the blade being 6 configured so that the non-sharpened top edge of the blade can be pressed against 7 the glass of the windshield while the sharpened bottom cutting edge penetrates the 8 urethane bed.
9 In another broad aspect, the invention involves a method for separating a glass windshield from a vehicle urethane bed, comprising: providing a reciprocating 11 air gun having a cutting tool mounted thereto for reciprocation thereby, said cutting 12 tool comprising a shaft connected at one end with the gun and at the other end with a 13 flat blade having a front cutting edge of at least 2 inches width;
reciprocating the 14 blade longitudinally, into and out of the bed, and severing the bed across its width;
and progressively moving the blade along the length of the bed to sever it completely 16 and leave a smooth cut surtace.
19 Figure 1 is an isometric view showing the cutting assembly;
Figure 2 is a top plan elevation of the blade and shaft portion of the cutting tool 21 of Figure 1;
22 Figure 3 is a side elevation, partly in section, showing the assembly of Figure 23 1; and 24 Figure 4 is a schematic side view showing part of the cutting assembly in use.
3 The cutting assembly 1 comprises a reciprocating air gun 2 and a cutting tool 4 comprised of a shaft 3 and blade 4.
The air gun 2 is commercially available. An Ingersoll Rand Pneumatic model 6 #117 or a Chicago Pneumatic model # CP715 gun is suitable. These guns can 7 deliver high impact strokes to advance the blade 4 through the urethane bed 24.
8 The shaft 3 is a 3/4 inch diameter steel rod having an inner end 5 9 conventionally shaped to connect with the air gun 2. At its outer end 6, a slot 7 extends inwardly to receive the shank 8 of the blade 4. The upper surtace of the rod 11 end 6 forms a recess 9. The rod end 6 further forms bolt holes 10 extending 12 transversely therethrough. Nuts 11 and bolts 12 are received in the recess 9 and 13 holes 10 to secure the blade shank 8 to the rod end 6.
14 The blade 4 is substantially bell-shaped, is formed of stainless steel, has a width at the front edge 20 of about 4 inches, a length of 6 inches and a thickness of 16 .05 inches. While it is substantially rigid, it has sufficient lateral flexibility so that it will 17 conform to the windshield curvature when pressed thereagainst. The blade 4 18 includes a 2 inch long shank 8 which is received in the rod slot 7. The blade 4 19 narrows from front to rear and its shank 8 has about the same width as the shaft 3, so that there are no significant lateral protrusions at the connection point. The front edge 21 20 is straight and sharpened. More specifically, the front edge 20 is beveled on one 22 side only to produce a top unsharpened edge which bears against the glass of the 23 windshield and a bottom sharpened cutting edge which penetrates the urethane bed 24 24 when the assembly is in use.
<I
1 As shown in Figure 4, the urethane bed 24 is bonded to the surface of the 2 pinch weld 25 extending around the perimeter of the window opening.
3 When assembled and operated, the blade 4 reciprocates with a throw or travel 4 of about 1 /2 inch. The blade is pressed against the inside surtace 22 of the glass windshield 23 and is driven into the urethane bed 24. The blade 4 flexes to conform 6 with the curvature of the windshield 23 with its unsharpened edge contacting the 7 glass and its sharpened edge penetrating into the urethane bed. It severs the bed 8 just beneath the glass. The installer moves the assembly along the length of the bed 9 by withdrawing the blade from the urethane, moving it to the next adjacent cut position and then again driving the blade in.
Claims (3)
1. A windshield removal assembly for cutting a urethane bed securing a glass windshield having a curved surface to a vehicle at an edge of a windshield opening formed by the vehicle, there being a narrowing apex space between the windshield and a vehicle part forming the opening, comprising:
a reciprocating air gun;
a rigid, elongated shaft having inner and outer ends and being connected at the inner end of said shaft with the gun for reciprocation thereby; and a flat thin steel blade of substantially constant thickness, said blade having front and rear ends, the blade rear end being connected to the shaft's outer end, the blade being substantially coplanar with the shaft, the blade having a substantially straight front edge which is beveled on one side only to provide a non-sharpened top edge and a sharpened bottom cutting edge, the blade narrowing from the front end to the rear end of the blade to about the width of the shaft, the blade being sufficiently rigid to cut the urethane bed when reciprocated by the air gun but having sufficient lateral flexibility to conform to the curved surface of the windshield when pressed thereagainst;
the shaft being operative to space the blade from the gun sufficiently to allow the assembly to be used within the confines of the apex space;
the air gun being operative to reciprocate the shaft and blade with sufficient force to advance the blade through the urethane bed;
the blade being configured so that the non-sharpened top edge of the blade can be pressed against the glass of the windshield while the sharpened bottom cutting edge penetrates the urethane bed.
a reciprocating air gun;
a rigid, elongated shaft having inner and outer ends and being connected at the inner end of said shaft with the gun for reciprocation thereby; and a flat thin steel blade of substantially constant thickness, said blade having front and rear ends, the blade rear end being connected to the shaft's outer end, the blade being substantially coplanar with the shaft, the blade having a substantially straight front edge which is beveled on one side only to provide a non-sharpened top edge and a sharpened bottom cutting edge, the blade narrowing from the front end to the rear end of the blade to about the width of the shaft, the blade being sufficiently rigid to cut the urethane bed when reciprocated by the air gun but having sufficient lateral flexibility to conform to the curved surface of the windshield when pressed thereagainst;
the shaft being operative to space the blade from the gun sufficiently to allow the assembly to be used within the confines of the apex space;
the air gun being operative to reciprocate the shaft and blade with sufficient force to advance the blade through the urethane bed;
the blade being configured so that the non-sharpened top edge of the blade can be pressed against the glass of the windshield while the sharpened bottom cutting edge penetrates the urethane bed.
2. The windshield removal assembly as set forth in claim 1 wherein:
the blade has a thickness of about 0.05 inches and a length of about 6 inches;
and the blade front cutting edge has a width of about 4 inches.
the blade has a thickness of about 0.05 inches and a length of about 6 inches;
and the blade front cutting edge has a width of about 4 inches.
3. The windshield removal assembly as set forth in claim 2 wherein:
the air gun has a stroke length of about 0.5 inches.
the air gun has a stroke length of about 0.5 inches.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2191511 CA2191511C (en) | 1996-11-28 | 1996-11-28 | Cutting assembly for removing windshield |
| AU51124/98A AU5112498A (en) | 1996-11-28 | 1997-11-21 | Cutting assembly for removing windshield |
| PCT/CA1997/000902 WO1998023416A1 (en) | 1996-11-28 | 1997-11-21 | Cutting assembly for removing windshield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2191511 CA2191511C (en) | 1996-11-28 | 1996-11-28 | Cutting assembly for removing windshield |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2191511A1 CA2191511A1 (en) | 1998-05-28 |
| CA2191511C true CA2191511C (en) | 2001-01-02 |
Family
ID=4159330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2191511 Expired - Lifetime CA2191511C (en) | 1996-11-28 | 1996-11-28 | Cutting assembly for removing windshield |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU5112498A (en) |
| CA (1) | CA2191511C (en) |
| WO (1) | WO1998023416A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPQ925300A0 (en) * | 2000-08-08 | 2000-08-31 | Lock, Trevor Stanley | Improved glass removing tool |
| US20070251361A1 (en) | 2006-04-28 | 2007-11-01 | Crystal Glass Canada Ltd. | Windshield removal assembly, method and blade for same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5219378A (en) * | 1992-04-28 | 1993-06-15 | Arnold Robert A | Reciprocating cutting tool and method |
| DE4222250C2 (en) * | 1992-07-07 | 1995-04-13 | Berthold Thieme | Cutting device for severing glass panes glued to motor vehicle body parts |
| US5469623A (en) * | 1994-04-29 | 1995-11-28 | Minnesota Mining And Manufacturing Company | Cutting tool and method for manufacture |
-
1996
- 1996-11-28 CA CA 2191511 patent/CA2191511C/en not_active Expired - Lifetime
-
1997
- 1997-11-21 WO PCT/CA1997/000902 patent/WO1998023416A1/en active Application Filing
- 1997-11-21 AU AU51124/98A patent/AU5112498A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CA2191511A1 (en) | 1998-05-28 |
| AU5112498A (en) | 1998-06-22 |
| WO1998023416A1 (en) | 1998-06-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20161128 |