CA2033360A1 - Injection moldable plastic laps - Google Patents

Injection moldable plastic laps

Info

Publication number
CA2033360A1
CA2033360A1 CA002033360A CA2033360A CA2033360A1 CA 2033360 A1 CA2033360 A1 CA 2033360A1 CA 002033360 A CA002033360 A CA 002033360A CA 2033360 A CA2033360 A CA 2033360A CA 2033360 A1 CA2033360 A1 CA 2033360A1
Authority
CA
Canada
Prior art keywords
lap
laps
injection moldable
moldable plastic
fining
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.)
Granted
Application number
CA002033360A
Other languages
French (fr)
Other versions
CA2033360C (en
Inventor
Don H. Rotenberg
Milton F. Whitmarsh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gerber Coburn Optical Inc
Original Assignee
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
Publication of CA2033360A1 publication Critical patent/CA2033360A1/en
Application granted granted Critical
Publication of CA2033360C publication Critical patent/CA2033360C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/01—Specific tools, e.g. bowl-like; Production, dressing or fastening of these tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

A lap used for the grinding, fining and polishing of glass and plastic lenses is constructed of a one-piece injection-molded reinforced polymer body. The front surface of the lap is curved and adapted to receive an abrasive pad.
The rear of the lap has a skeletal rib structure of projecting interconnected ribs. Polymers suitable for forming the lap include various crystalline polymers and copolymers having adequate chemical resistance, strength, rigidity and thermal resistance.
CA002033360A 1990-01-03 1990-12-28 Injection moldable plastic laps Expired - Lifetime CA2033360C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US46037890A 1990-01-03 1990-01-03
US460,378 1990-01-03

Publications (2)

Publication Number Publication Date
CA2033360A1 true CA2033360A1 (en) 1991-07-04
CA2033360C CA2033360C (en) 2001-10-30

Family

ID=23828473

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002033360A Expired - Lifetime CA2033360C (en) 1990-01-03 1990-12-28 Injection moldable plastic laps

Country Status (6)

Country Link
EP (1) EP0436315A3 (en)
JP (1) JPH04135153A (en)
AU (1) AU641962B2 (en)
BR (1) BR9006670A (en)
CA (1) CA2033360C (en)
ZA (1) ZA918B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140782A (en) * 1990-10-29 1992-08-25 Honore Mecteau Tool and method for forming a lens
US5779529A (en) * 1996-11-25 1998-07-14 Bizer Industries Thermoplastic optical lap with reinforced webbing
CN112207877B (en) * 2020-09-07 2022-04-26 中国工程物理研究院激光聚变研究中心 Method for generating spiral groove on surface of asphalt polishing disc in annular polishing

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098028A (en) * 1977-04-21 1978-07-04 American Optical Corporation Adaptor for lens surfacing tool
US4148160A (en) * 1977-12-05 1979-04-10 American Optical Corporation Lens surfacing tool and tool holder
US4377057A (en) * 1978-06-14 1983-03-22 Lortone, Inc. Hand cabbing apparatus
US4382803A (en) * 1980-07-31 1983-05-10 Rowland, Incorporated Tools for optical lenses
DE3712148A1 (en) * 1986-11-28 1988-06-09 Klaus Kassner Bearing body
FR2612823B1 (en) * 1987-03-27 1994-02-25 Essilor Internal Cie Gle Optique TOOL WITH SELF-CONFORMING PRESSURE ON THE SURFACE OF AN OPHTHALMIC LENS AND USABLE IN PARTICULAR AS AN APPLICATOR OR POLISHING PAD

Also Published As

Publication number Publication date
JPH04135153A (en) 1992-05-08
ZA918B (en) 1992-08-26
AU641962B2 (en) 1993-10-07
EP0436315A2 (en) 1991-07-10
EP0436315A3 (en) 1991-12-11
BR9006670A (en) 1991-10-01
AU6801490A (en) 1991-07-04
CA2033360C (en) 2001-10-30

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry
MKEX Expiry

Effective date: 20101228