CA2305821A1 - A cutting apparatus for the removal of windshield - Google Patents
A cutting apparatus for the removal of windshield Download PDFInfo
- Publication number
- CA2305821A1 CA2305821A1 CA 2305821 CA2305821A CA2305821A1 CA 2305821 A1 CA2305821 A1 CA 2305821A1 CA 2305821 CA2305821 CA 2305821 CA 2305821 A CA2305821 A CA 2305821A CA 2305821 A1 CA2305821 A1 CA 2305821A1
- Authority
- CA
- Canada
- Prior art keywords
- shaft
- blade
- cutting
- cylindrical
- bed
- 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
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)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
A cutting apparatus comprising a cutting blade with round corners, mounted in an offset manner on the flattened indented end of a shaft, which is connected to a power source at the other end, can be used for severing the urethane bed which bonds the windshield to the frame of a motor vehicle.
Description
1 Field of the Invention 2 This invention relates to a cutting apparatus, for severing the urethane 3 bed securing a glass windshield to the frame of a motor vehicle, with a flat, 4 round cornered, cutting edge blade, mounted on a recipient shaft, in an offset manner.
Description of the Prior Art 8 The essential step in the removal of a windshield from the frame of a 9 motor vehicle is to sever the urethane bed bonding the windshield to the 1o frame. Presently, there are various devices available in the market that can be 11 used to accomplish the extraction, usually with penetrating blades driven 12 manually or by power tools, such as air guns.
14 Patent no. 2,191,511 involves an unit of cutting assembly comprising a reciprocating air gun, connected to a shaft at one end for the purpose of 16 reciprocation. At the other end of the shaft, a receiving slot accommodates the 1~ mounting of a blade . The blade has a straight front cutting edge at least 1s inches in width. The blade when mounted to the shaft is reciprocated in and 19 out of the urethane bed to sever the bonding between the windshield and the motor vehicle.
a 22 In embodiment aforesaid, the slot cuts into the middle of the end of the 23 shaft for mounting the blade. Such a construction has a disadvantage, namely 1 that in the confined space between the windshield and the dashboard of the 2 motor vehicle, the end of the shaft receiving the cutting blade, in practice, 3 makes contact with the windshield or the dashboard, thereby possibly 4 shattering the glass or damaging the dashboard while the shaft is reciprocated by the air gun. The slot also requires the blade to have a fixed thickness so that 6 the blade can be fitted therein. Because of the slot, the blade cannot be 7 mounted in an offset manner to get into the confined space between the 8 dashboard and the windshield.
The method of severing the urethane bed in the embodiment aforesaid 11 is by pressing the blade into the bed, withdrawing it and repeating the steps at 12 the next cut position along the bed. The construction of the blade limits the i3 movement of the blade in severing the urethane bed and is disadvantageous 14 because the cut may not be continuous and may depend largely upon the placement of the next cut.
4 In the present invention, the urethane bed is severed by a cutting apparatus comprising:
7 a flat and spade shaped steel blade with a cutting edge and round 8 corners and a shank at the other end, having holes therein to fix nuts and 9 bolts;
11 a steel cylindrical shaft about 2 cm. in diameter and at least 18 cm. i n 12 total length, with an inner end with a flattened, indented upper half on top 13 and the semi-cylindrical bottom having a hollow, with holes therein to affix 14 nuts and bolts, and a cylindrical outer end with outward connector for connecting to a power source, such as an air gun. The transition from the 16 cylindrical to the flat indented upper half of the shaft is at 90 degrees;
1~
is The shank of the blade is mounted onto the flattened, indented end of 19 the shaft in an offset manner and is fixed thereto by means of nuts and bolts.
2o The cylindrical end of the shaft with its outward connector is fixed to the 2i power source, which when activated, reciprocates the shaft and thereby the 22 blade.
1 The present invention also provides for a method of cutting the 2 urethane bed between a motor vehicle and its frame which comprises:
3 (a) mounting and fixing, with nuts and bolts, the shank of a flat and 4 spade shaped steel blade with a cutting edge and round corners, in an offset 5 manner, to the flattened, indented upper half of an inner end of a steel 6 cylindrical shaft about 2 cm. in diameter and at least 18 cm. in total length, the 7 bottom half of this end being semi-cylindrical and having a hollow, with 8 holes therein to affix nuts and bolts;
Description of the Prior Art 8 The essential step in the removal of a windshield from the frame of a 9 motor vehicle is to sever the urethane bed bonding the windshield to the 1o frame. Presently, there are various devices available in the market that can be 11 used to accomplish the extraction, usually with penetrating blades driven 12 manually or by power tools, such as air guns.
14 Patent no. 2,191,511 involves an unit of cutting assembly comprising a reciprocating air gun, connected to a shaft at one end for the purpose of 16 reciprocation. At the other end of the shaft, a receiving slot accommodates the 1~ mounting of a blade . The blade has a straight front cutting edge at least 1s inches in width. The blade when mounted to the shaft is reciprocated in and 19 out of the urethane bed to sever the bonding between the windshield and the motor vehicle.
a 22 In embodiment aforesaid, the slot cuts into the middle of the end of the 23 shaft for mounting the blade. Such a construction has a disadvantage, namely 1 that in the confined space between the windshield and the dashboard of the 2 motor vehicle, the end of the shaft receiving the cutting blade, in practice, 3 makes contact with the windshield or the dashboard, thereby possibly 4 shattering the glass or damaging the dashboard while the shaft is reciprocated by the air gun. The slot also requires the blade to have a fixed thickness so that 6 the blade can be fitted therein. Because of the slot, the blade cannot be 7 mounted in an offset manner to get into the confined space between the 8 dashboard and the windshield.
The method of severing the urethane bed in the embodiment aforesaid 11 is by pressing the blade into the bed, withdrawing it and repeating the steps at 12 the next cut position along the bed. The construction of the blade limits the i3 movement of the blade in severing the urethane bed and is disadvantageous 14 because the cut may not be continuous and may depend largely upon the placement of the next cut.
4 In the present invention, the urethane bed is severed by a cutting apparatus comprising:
7 a flat and spade shaped steel blade with a cutting edge and round 8 corners and a shank at the other end, having holes therein to fix nuts and 9 bolts;
11 a steel cylindrical shaft about 2 cm. in diameter and at least 18 cm. i n 12 total length, with an inner end with a flattened, indented upper half on top 13 and the semi-cylindrical bottom having a hollow, with holes therein to affix 14 nuts and bolts, and a cylindrical outer end with outward connector for connecting to a power source, such as an air gun. The transition from the 16 cylindrical to the flat indented upper half of the shaft is at 90 degrees;
1~
is The shank of the blade is mounted onto the flattened, indented end of 19 the shaft in an offset manner and is fixed thereto by means of nuts and bolts.
2o The cylindrical end of the shaft with its outward connector is fixed to the 2i power source, which when activated, reciprocates the shaft and thereby the 22 blade.
1 The present invention also provides for a method of cutting the 2 urethane bed between a motor vehicle and its frame which comprises:
3 (a) mounting and fixing, with nuts and bolts, the shank of a flat and 4 spade shaped steel blade with a cutting edge and round corners, in an offset 5 manner, to the flattened, indented upper half of an inner end of a steel 6 cylindrical shaft about 2 cm. in diameter and at least 18 cm. in total length, the 7 bottom half of this end being semi-cylindrical and having a hollow, with 8 holes therein to affix nuts and bolts;
(b) connecting the outward connector of the outer end of the shaft to a 11 power source, such as an air gun;
13 (c) with the blade mounted on the flattened, indented upper half of the 14 shaft facing the dashboard when cutting the urethane between the dashboard and the windshield or facing the windshield or the roof when cutting the 16 urethane bed between the windshield and the roof, activating the power 1~ source to reciprocate the blade into the urethane bed to make an incision 18 therein, and guiding the blade along the length of the urethane bed and 19 severing it with the round corner of the blade in a lateral continuous motion.
21 The objects of the present invention are:
1 ~ to allow for the cutting edge and the round corners of the blade to be 2 guided across along the length of the urethane bed to sever it 3 around the frame of a motor vehicle in a continuous motion;
4 ~ to provide for the blade to be reciprocated into the urethane bed with the flattened, indented upper half with the blade mounted 6 thereon in an offset manner, facing the dashboard of a motor 7 vehicle, to reduce the potential damage that could be done to the s dashboard when cutting the bottom of the urethane bed from the 9 inside of the windshield and the dashboard;
to ~ to provide for blades of various thickness to be mounted, thus 11 enabling the cutting apparatus to be used in more diverse locations 12 inside a motor vehicle to remove the windshield;
13 ~ to provide for better control over the point of incision of the blade 14 to the urethane bed;
~ with the transition from the cylindrical to the flat, indented upper 16 half of the shaft at 90 degrees, to provide for a support base for the 1~ shank when force is applied to the cutting apparatus to sever the is urethane bed;
19 ~ with the inner, flattened and indented, end of the upper half of the 2o shaft, to provide for a support base against breakage of the shank 21 held by nuts and bolts between the cylindrical part of the shaft at 22 one end and the blade at the other end.
4 FIG. 1 is a top plan view of the cutting apparatus incorporating the preferred embodiment of the present invention.
7 FIG. 2 is a side view showing the cutting apparatus in FIG. 1.
s FIG. 3 is a schematic side view showing the placement of the cutting apparatus while in use in relation to the dashboard and the roof and the 11 windshield of a motor vehicle.
4 Referring to the drawing, the cutting apparatus 1 has the following:
6 a blade 2 with a cutting edge 3 and rounded corners 4 and a shank 5 7 with holes 9 therein, which is mounted with nuts 11 and bolts 10 to a steel 8 shaft 6 at inner end with a flattened indentation 7.
to The shaft 6 is about 2 cm. in diameter and at least 18 cm. in total length.
11 The inner end of the shaft has a flattened, indented upper half 7 and a semi-12 cylindrical bottom having a hollow 8 with holes 9 therein to fix nuts 11 and 13 bolts 10. The transition from the cylindrical to the flattened, indented upper i4 half of the shaft is at 90 degrees 12.
16 The cylindrical outer end of the shaft 6 has an outward connector 13 for 17 connecting to a conventional power source, such as an air gun, which is 18 commercially available (not shown).
2o After the blade 2 is mounted on the shaft 6, the shaft 6 is connected to a 21 power source and activated. The blade 2 makes an incision into the urethane 22 bed 14 with the flattened, indented upper half 7 of the shaft 6 facing the 23 dashboard of a motor vehicle. The blade 2 is guided along the length of the 1 urethane bed 14 and cutting it with its round corner in a continuous, lateral 2 motion, thereby severing the bed from the frame and the windshield of a 3 motor vehicle.
13 (c) with the blade mounted on the flattened, indented upper half of the 14 shaft facing the dashboard when cutting the urethane between the dashboard and the windshield or facing the windshield or the roof when cutting the 16 urethane bed between the windshield and the roof, activating the power 1~ source to reciprocate the blade into the urethane bed to make an incision 18 therein, and guiding the blade along the length of the urethane bed and 19 severing it with the round corner of the blade in a lateral continuous motion.
21 The objects of the present invention are:
1 ~ to allow for the cutting edge and the round corners of the blade to be 2 guided across along the length of the urethane bed to sever it 3 around the frame of a motor vehicle in a continuous motion;
4 ~ to provide for the blade to be reciprocated into the urethane bed with the flattened, indented upper half with the blade mounted 6 thereon in an offset manner, facing the dashboard of a motor 7 vehicle, to reduce the potential damage that could be done to the s dashboard when cutting the bottom of the urethane bed from the 9 inside of the windshield and the dashboard;
to ~ to provide for blades of various thickness to be mounted, thus 11 enabling the cutting apparatus to be used in more diverse locations 12 inside a motor vehicle to remove the windshield;
13 ~ to provide for better control over the point of incision of the blade 14 to the urethane bed;
~ with the transition from the cylindrical to the flat, indented upper 16 half of the shaft at 90 degrees, to provide for a support base for the 1~ shank when force is applied to the cutting apparatus to sever the is urethane bed;
19 ~ with the inner, flattened and indented, end of the upper half of the 2o shaft, to provide for a support base against breakage of the shank 21 held by nuts and bolts between the cylindrical part of the shaft at 22 one end and the blade at the other end.
4 FIG. 1 is a top plan view of the cutting apparatus incorporating the preferred embodiment of the present invention.
7 FIG. 2 is a side view showing the cutting apparatus in FIG. 1.
s FIG. 3 is a schematic side view showing the placement of the cutting apparatus while in use in relation to the dashboard and the roof and the 11 windshield of a motor vehicle.
4 Referring to the drawing, the cutting apparatus 1 has the following:
6 a blade 2 with a cutting edge 3 and rounded corners 4 and a shank 5 7 with holes 9 therein, which is mounted with nuts 11 and bolts 10 to a steel 8 shaft 6 at inner end with a flattened indentation 7.
to The shaft 6 is about 2 cm. in diameter and at least 18 cm. in total length.
11 The inner end of the shaft has a flattened, indented upper half 7 and a semi-12 cylindrical bottom having a hollow 8 with holes 9 therein to fix nuts 11 and 13 bolts 10. The transition from the cylindrical to the flattened, indented upper i4 half of the shaft is at 90 degrees 12.
16 The cylindrical outer end of the shaft 6 has an outward connector 13 for 17 connecting to a conventional power source, such as an air gun, which is 18 commercially available (not shown).
2o After the blade 2 is mounted on the shaft 6, the shaft 6 is connected to a 21 power source and activated. The blade 2 makes an incision into the urethane 22 bed 14 with the flattened, indented upper half 7 of the shaft 6 facing the 23 dashboard of a motor vehicle. The blade 2 is guided along the length of the 1 urethane bed 14 and cutting it with its round corner in a continuous, lateral 2 motion, thereby severing the bed from the frame and the windshield of a 3 motor vehicle.
Claims (7)
1. A cutting apparatus for severing the urethane bed bonding the windshield of a motor vehicle to its frame, including the dashboard, comprising:
a steel blade with a cutting edge and rounded corners and a shank, a steel shaft with an inner end for mounting and fixing the shank of the blade in an offset manner, and an outer end with outward connector to fit to a power source, the power source, when connected to the outward connector of the cylindrical outer end of the shaft, for driving the blade mounted onto the shaft into the urethane bed to make incision therein.
a steel blade with a cutting edge and rounded corners and a shank, a steel shaft with an inner end for mounting and fixing the shank of the blade in an offset manner, and an outer end with outward connector to fit to a power source, the power source, when connected to the outward connector of the cylindrical outer end of the shaft, for driving the blade mounted onto the shaft into the urethane bed to make incision therein.
2. The cutting apparatus of claim 1, in which the cutting blade is spade shaped and has a shank at the other end, having holes therein to fix nuts and bolts;
3. The cutting apparatus of claim 1, in which the steel shaft is cylindrical and about 2 cm. in diameter and at least 18 cm. in total length, with an inner end with a flattened, indented upper half on top and a semi-cylindrical bottom having a hollow with holes therein to affix nuts and bolts, and a cylindrical outer ends with outward connector for connecting to the power source. The transition from the cylindrical to the flattened and indented top half of the shaft is at 90 degrees.
4. The cutting apparatus of claim 1, in which the shank of the blade is mounted onto the flattened and indented inner end of the shaft in an offset manner and is fixed thereto by means of nuts and bolts.
5. The cutting apparatus of claim 1, in which the cylindrical end of the shaft with its outward connector is fixed to the power source, which when activated, reciprocates the shaft and the blade mounted thereon.
6. A method of cutting the urethane bed between a motor vehicle and its frame which comprises:
mounting and fixing, with nuts and bolts, the shank of a flat and spade shaped steel blade with a cutting edge and round corners, to the flattened, indented upper half of an inner end of a steel cylindrical shaft about 2 cm.
in diameter and at least 18 cm. in total length, the bottom half of this end being semi-cylindrical and having a hollow with holes therein to fix nuts and bolts;
connecting an outward connector of the outer end of the shaft to a power source for driving the shaft and the blade mounted thereon;
with the blade mounted on the flattened and indented upper half end of the shaft facing the dashboard when cutting the urethane between the dashboard and the windshield or facing the windshield or the roof when cutting the urethane bed between the windshield and the roof, activating the power source to drive the blade into the urethane bed to make an incision;
guiding the blade along the length of the urethane bed and cutting the bed with its round corner in a continuous lateral motion, thereby severing the bed.
mounting and fixing, with nuts and bolts, the shank of a flat and spade shaped steel blade with a cutting edge and round corners, to the flattened, indented upper half of an inner end of a steel cylindrical shaft about 2 cm.
in diameter and at least 18 cm. in total length, the bottom half of this end being semi-cylindrical and having a hollow with holes therein to fix nuts and bolts;
connecting an outward connector of the outer end of the shaft to a power source for driving the shaft and the blade mounted thereon;
with the blade mounted on the flattened and indented upper half end of the shaft facing the dashboard when cutting the urethane between the dashboard and the windshield or facing the windshield or the roof when cutting the urethane bed between the windshield and the roof, activating the power source to drive the blade into the urethane bed to make an incision;
guiding the blade along the length of the urethane bed and cutting the bed with its round corner in a continuous lateral motion, thereby severing the bed.
7. The cutting apparatus of claim 1 and the cutting method of claim 6, in which the power source, activated to drive the shaft and the blade, may be a conventional power tool, such as an air gun.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2305821 CA2305821A1 (en) | 2000-04-20 | 2000-04-20 | A cutting apparatus for the removal of windshield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2305821 CA2305821A1 (en) | 2000-04-20 | 2000-04-20 | A cutting apparatus for the removal of windshield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2305821A1 true CA2305821A1 (en) | 2001-10-20 |
Family
ID=4165910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2305821 Abandoned CA2305821A1 (en) | 2000-04-20 | 2000-04-20 | A cutting apparatus for the removal of windshield |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2305821A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090320299A1 (en) * | 2008-06-27 | 2009-12-31 | Justin Kuhn | Scraper Blade |
| US7908949B2 (en) * | 2006-04-28 | 2011-03-22 | Crystal Glass Canada Ltd. | Windshield removal assembly, method and blade for same |
-
2000
- 2000-04-20 CA CA 2305821 patent/CA2305821A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7908949B2 (en) * | 2006-04-28 | 2011-03-22 | Crystal Glass Canada Ltd. | Windshield removal assembly, method and blade for same |
| US20090320299A1 (en) * | 2008-06-27 | 2009-12-31 | Justin Kuhn | Scraper Blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |