US20050126011A1 - Handsaw with Pressure_Controlled handle - Google Patents

Handsaw with Pressure_Controlled handle Download PDF

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Publication number
US20050126011A1
US20050126011A1 US10/906,474 US90647405A US2005126011A1 US 20050126011 A1 US20050126011 A1 US 20050126011A1 US 90647405 A US90647405 A US 90647405A US 2005126011 A1 US2005126011 A1 US 2005126011A1
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United States
Prior art keywords
stock
saw
handsaw
stroke direction
forces applied
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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US10/906,474
Inventor
Dan Pool
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Individual
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Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US10/906,474 priority Critical patent/US20050126011A1/en
Publication of US20050126011A1 publication Critical patent/US20050126011A1/en
Abandoned legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
    • C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
    • C08F20/10—Esters
    • C08F20/34—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate
    • C08F20/36—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate containing oxygen in addition to the carboxy oxygen, e.g. 2-N-morpholinoethyl (meth)acrylate or 2-isocyanatoethyl (meth)acrylate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/30—Compositions for temporarily or permanently fixing teeth or palates, e.g. primers for dental adhesives

Definitions

  • a wood saw might have relatively coarse teeth, and can cut soft and hard woods.
  • a single wood saw blade cannot be optimized to cut both hard and soft stock. If it cuts hard stock well, it will tend to cut soft stock slowly. If it cuts stock well, it will tend to cut hard stock with difficulty.
  • Our invention allows optimization of applied pressure to the stock being cut with a simple adjustment of pitch between the handle and blade of the saw.
  • Two directional forces are necessary in using a handsaw.
  • One force is oriented parallel to the stroke of the saw to move the teeth through the stock.
  • the other force is oriented perpendicular to the stroke of the saw to push the teeth into engagement with the stock with each successive stroke.
  • the line (or curve) of the teeth on a handsaw determines the direction of the stroke for the saw.
  • the pitch on the handle governs the ratio of pressure devoted to parallel force versus perpendicular force.
  • the pitch on the handle is fixed relative to the stroke direction because the handle is fixedly mounted to the blade.
  • Our handsaw design allows the handle pitch to be changed to optimize cutting of softer or harder stocks, thus improving saw performance for a wider range of applications.
  • the degree of pitch is indicated in our preferred embodiment with “Heavy” indicating high relative perpendicular force applied and “light” indicating low relative perpendicular force applied. Variations in terminology could, of course, be used.

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Veterinary Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)
  • Dental Preparations (AREA)

Abstract

The principles of our invention can be applied to both push-saws and pull-saws. More points could, of course, be used. A change in the pitch changes the ratio between forces applied parallel and perpendicular to the stroke direction, and therefore determines how aggressive the saw will behave. For hard stock, a less aggressive behavior is more efficient, decreasing the forces applied perpendicular to the stroke direction. For soft stock, a more aggressive behavior is more efficient, increasing the forces applied perpendicular to the stroke direction and decreasing the number of strokes necessary to cut through a particular piece of stock. Furthermore, the preferred embodiment of our invention allows multiple saw blades to be used with each saw for cutting a variety of materials (wood, metal, plastics, etc.).

Description

  • Many kinds of handsaws are available on the market today. Most of the design variations have to do with blade or handle type to best fit a particular type of job. A wood saw might have relatively coarse teeth, and can cut soft and hard woods. However, a single wood saw blade cannot be optimized to cut both hard and soft stock. If it cuts hard stock well, it will tend to cut soft stock slowly. If it cuts stock well, it will tend to cut hard stock with difficulty.
  • Our invention allows optimization of applied pressure to the stock being cut with a simple adjustment of pitch between the handle and blade of the saw.
  • Two directional forces are necessary in using a handsaw. One force is oriented parallel to the stroke of the saw to move the teeth through the stock. The other force is oriented perpendicular to the stroke of the saw to push the teeth into engagement with the stock with each successive stroke.
  • The line (or curve) of the teeth on a handsaw determines the direction of the stroke for the saw. The pitch on the handle governs the ratio of pressure devoted to parallel force versus perpendicular force. For typical handsaw designs, the pitch on the handle is fixed relative to the stroke direction because the handle is fixedly mounted to the blade. Our handsaw design allows the handle pitch to be changed to optimize cutting of softer or harder stocks, thus improving saw performance for a wider range of applications. The degree of pitch is indicated in our preferred embodiment with “Heavy” indicating high relative perpendicular force applied and “light” indicating low relative perpendicular force applied. Variations in terminology could, of course, be used.

Claims (2)

1. The preferred embodiment of this invention allows the handle pitch to be adjusted without the need for tools.
2. As claimed in claim 1, the handle has a pivot point, about which it can be rotated to two or three preset points to change the pitch (see enclosed drawings).
US10/906,474 1983-10-28 2005-02-22 Handsaw with Pressure_Controlled handle Abandoned US20050126011A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/906,474 US20050126011A1 (en) 1983-10-28 2005-02-22 Handsaw with Pressure_Controlled handle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/546,472 US4554336A (en) 1983-10-28 1983-10-28 Urethane modified orthodontic adhesive
US10/906,474 US20050126011A1 (en) 1983-10-28 2005-02-22 Handsaw with Pressure_Controlled handle

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US06/546,472 Continuation US4554336A (en) 1983-10-28 1983-10-28 Urethane modified orthodontic adhesive

Publications (1)

Publication Number Publication Date
US20050126011A1 true US20050126011A1 (en) 2005-06-16

Family

ID=24180574

Family Applications (2)

Application Number Title Priority Date Filing Date
US06/546,472 Expired - Fee Related US4554336A (en) 1983-10-28 1983-10-28 Urethane modified orthodontic adhesive
US10/906,474 Abandoned US20050126011A1 (en) 1983-10-28 2005-02-22 Handsaw with Pressure_Controlled handle

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US06/546,472 Expired - Fee Related US4554336A (en) 1983-10-28 1983-10-28 Urethane modified orthodontic adhesive

Country Status (1)

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US (2) US4554336A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005040896A1 (en) * 2005-08-29 2007-03-01 Irwin Industrial Tools Gmbh Hand saw for work piece, has handle for operating hand saw, and saw blade connected with handle and including cutting edge, where cutting edge cuts in area of quarter length, close to handle, of saw blade
CN102896617A (en) * 2012-09-26 2013-01-30 冯毅胜 Three-in-one arm saw

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703120A1 (en) * 1986-07-25 1988-01-28 Bayer Ag URETHANE GROUPS CONTAINING (METH) ACRYLIC ACID DERIVATIVES FROM TRICYCLO (5.2.1.0 (UP ARROW) 2 (UP ARROW) (UP ARROW). (UP ARROW) (UP ARROW) 6 (UP ARROW)) DECANES
DE3703130A1 (en) * 1986-07-25 1988-01-28 Bayer Ag URETHANE GROUPS CONTAINING (METH) ACRYLIC ACID DERIVATIVES
US4792577A (en) * 1987-07-16 1988-12-20 Johnson & Johnson Consumer Products, Inc. Stain-resistant no-mix orthodontic adhesive
DE3743782A1 (en) * 1987-12-23 1989-07-13 Bayer Ag ESTER URETHANE (METH) ACRYLIC ACID DERIVATIVES
US5362769A (en) * 1992-05-07 1994-11-08 Ormco Corporation Orthodontic adhesives
US5269682A (en) * 1993-01-22 1993-12-14 Tp Orthodontics, Inc. Method for identifying and removing orthodontic bonding adhesive
JPH09504572A (en) * 1994-11-04 1997-05-06 ザ カー コーポレイション Radiation curable molding composition
US6068852A (en) * 1997-10-11 2000-05-30 Polytherapeutics, Inc. Polymeric composition for sealing and shielding animal skin
US6387982B1 (en) 1998-11-23 2002-05-14 Dentsply Detrey G.M.B.H. Self etching adhesive primer composition and polymerizable surfactants
US7776940B2 (en) 2005-12-20 2010-08-17 3M Innovative Properties Company Methods for reducing bond strengths, dental compositions, and the use thereof
US7896650B2 (en) 2005-12-20 2011-03-01 3M Innovative Properties Company Dental compositions including radiation-to-heat converters, and the use thereof
US8026296B2 (en) 2005-12-20 2011-09-27 3M Innovative Properties Company Dental compositions including a thermally labile component, and the use thereof
DE102006060983A1 (en) * 2006-12-20 2008-06-26 Heraeus Kulzer Gmbh Dental composites with tricyclo [5.2.1.02.6] decane derivatives
US20080286724A1 (en) 2007-05-18 2008-11-20 Ormco Corporation Orthodontic adhesives
TWI648301B (en) * 2016-03-31 2019-01-21 Ｌｇ化學股份有限公司 Compound, curable composition comprising the same, display panel and display device
DE102022116577A1 (en) 2022-07-04 2024-01-04 Mühlbauer Technology Gmbh Monomer mixture for producing a dental material

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US155950A (en) * 1874-10-13 Improvement in hand-saws
US257978A (en) * 1882-05-16 Saw-handle
US327776A (en) * 1885-10-06 eisenhardt
US703334A (en) * 1902-03-17 1902-06-24 E C Atkins & Company Compass-saw.
US1119787A (en) * 1913-10-13 1914-12-01 Henry T P James Handle for handsaws.
US1531131A (en) * 1923-11-19 1925-03-24 William G Price Saw handle
US2146777A (en) * 1936-11-09 1939-02-14 Levi W Strong Saw handle
US2478347A (en) * 1947-08-08 1949-08-09 Richard R Warrington Combination handsaw and measuring tool
US2621689A (en) * 1949-04-19 1952-12-16 Rose Gringer Protractor saw
US2747631A (en) * 1954-02-18 1956-05-29 Knut G Behlefeldt Angularly adjustable saw
US2762407A (en) * 1954-12-24 1956-09-11 American Saw & Tool Company Saw with adjustable saw blade
US5722168A (en) * 1996-07-29 1998-03-03 Huang; Jung Hua Saw blade securing mechanism
US6516525B2 (en) * 2001-07-02 2003-02-11 Chin-Pao Liu Handsaw

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891523A (en) * 1970-01-19 1975-06-24 Dainippon Ink & Chemicals Photopolymerizable, isocyanate-containing prepolymers
GB1401805A (en) * 1972-03-15 1975-07-30 Amalgamated Dental Co Ltd Dental filling materials
US3907865A (en) * 1973-06-20 1975-09-23 Kansai Paint Co Ltd Photopolymerizable vinylurethane monomer
US4271223A (en) * 1978-11-02 1981-06-02 Minnesota Mining And Manufacturing Company Plastic film label stock
US4394494A (en) * 1980-07-04 1983-07-19 Lion Corporation Dental filling material
US4380432A (en) * 1980-09-03 1983-04-19 Scientific Pharmaceuticals Method for adhering structures to teeth

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US155950A (en) * 1874-10-13 Improvement in hand-saws
US257978A (en) * 1882-05-16 Saw-handle
US327776A (en) * 1885-10-06 eisenhardt
US703334A (en) * 1902-03-17 1902-06-24 E C Atkins & Company Compass-saw.
US1119787A (en) * 1913-10-13 1914-12-01 Henry T P James Handle for handsaws.
US1531131A (en) * 1923-11-19 1925-03-24 William G Price Saw handle
US2146777A (en) * 1936-11-09 1939-02-14 Levi W Strong Saw handle
US2478347A (en) * 1947-08-08 1949-08-09 Richard R Warrington Combination handsaw and measuring tool
US2621689A (en) * 1949-04-19 1952-12-16 Rose Gringer Protractor saw
US2747631A (en) * 1954-02-18 1956-05-29 Knut G Behlefeldt Angularly adjustable saw
US2762407A (en) * 1954-12-24 1956-09-11 American Saw & Tool Company Saw with adjustable saw blade
US5722168A (en) * 1996-07-29 1998-03-03 Huang; Jung Hua Saw blade securing mechanism
US6516525B2 (en) * 2001-07-02 2003-02-11 Chin-Pao Liu Handsaw

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005040896A1 (en) * 2005-08-29 2007-03-01 Irwin Industrial Tools Gmbh Hand saw for work piece, has handle for operating hand saw, and saw blade connected with handle and including cutting edge, where cutting edge cuts in area of quarter length, close to handle, of saw blade
US20090300926A1 (en) * 2005-08-29 2009-12-10 Irwin Industrial Tool Company Gmbh Hand saw
US9205501B2 (en) 2005-08-29 2015-12-08 Irwin Industrial Tool Company Hand saw
CN102896617A (en) * 2012-09-26 2013-01-30 冯毅胜 Three-in-one arm saw

Also Published As

Publication number Publication date
US4554336A (en) 1985-11-19

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STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION