top of page
  • Writer's pictureianhandricks

United States Patent No. 4,619,082

28th October 1986

United States Patent

Ian L. Handricks

Patent Number: 4,619,082

Date of Patent: Oct. 28, 1986


INVENTOR: Ian L. Handricks, Chalgrove, England

Assignee: Contact Lens Supplies Limited, England

Appl. No.: 663,780

Filed: Oct. 23, 1984

Foreign Application Priority Data

Oct. 24, 1983 [GB] United Kingdom 8328365

Int. CU B24B 1/00

U.S. CI. Sl/284 R; 51/216 LP

Field of Search 51/284 R, 284 E, 326, 51/216 LP, 217 L, 229, 237 R, 277; 264/1.1, 2.7;

82/1 C, ll

References Cited


1,911,153 5/1933 Hill 51/284

3.030,859 4/1962 Elliot, Jr. 51/284

3.064.531 11/1962 Bullock 51/284

3,100,955 8/1963 Kratt 51/237 R

3,662,040 5/1972 Urbach et al 51/284

Primary Examiner Frederick R. Schmidt

Assistant Examiner Robert A. Rose

Attorney, Agent, or Firm Welsh & Katz, Ltd.


A contact lens is manufactured by a method involving machining a first face and a reference surface on a blank; mounting the blank in a work holder adapted for accurate mounting on a lathe such that the blank is held with its first face accurately positioned relative to a datum point on the lathe; and machining a second face on the blank. Such method avoids the need for skilled operatives and enables easy manufacture of accurately dimensioned contact lenses.

20 views0 comments

Recent Posts

See All
bottom of page