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...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 6129042 | Process and machine for coating ophthalmic lenses In a process and machine for coating a surface of an ophthalmic lens, the lens is manually loaded by the operator to a wash/dry station within an enclosure of the coating machine. Thereafter, the machine computer controls the entire process. The machine i... | 10/10/2000 |
| 6109276 | Method and apparatus for cleaning ophthalmic lenses and blocks A process and machine for cleaning ophthalmic lenses and blocks heats a washing solution in a wash tank and a rinsing solution in a rinse tank to approximately 140° F. Ultrasonic wave agitation is then initiated in the solutions. A set of lenses or block... | 08/29/2000 |
| 5996596 | Method and apparatus for cleaning ophthalmic lenses and blocks A process and machine for cleaning ophthalmic lenses and blocks heats a washing solution in a wash tank and a rinsing solution in a rinse tank to approximately l40° F. Ultrasonic wave agitation is then initiated in the solutions. A set of lenses or block... | 12/07/1999 |
| 5988191 | Holder for ophthalmic lenses and lens blocks A holder for suspending ophthalmic lenses and lens blocks of various diameters from a rod in a lens and block cleaning machine has a frame with a horizontal base member and a pair of upright members extending upwardly, one from each end of the base member... | 11/23/1999 |
| 5928063 | Pneumatically assisted unidirectional arcuate diaphragm conformal tool A tool for polishing/fining an ophthalmic lens has a housing with an interior open at the ends thereof. Resiliently elastic diaphragms with central spherical work surfaces extend across the ends of the housing. A cluster of rods extends longitudinally in ... | 07/27/1999 |
| 5841662 | Method and apparatus for chucked work piece recognition A recognition apparatus and method are provided for identifying the type of work piece loaded onto the rotating shaft chuck of an ophthalmic product generator. A digital electronic system supplies signals which control the angular displacement of the chuc... | 11/24/1998 |
| 5800255 | Lap adapter A unitary lap blank has a front polishing portion and a rear disk portion contoured for coupling the disk to a chuck of the lathe and also to a chuck of the polishing machine. Preferably, the disk has a circular channel in its face opposed to its base and... | 09/01/1998 |
| 5785580 | Compression sleeve opthalmic lens chuck An ophthalmic lens block and lens generating machine compression sleeve chuck are provided such that the block is of diameter suitable for the lens edging step of the lens generating process. The lens generating chuck consists of a plurality of concentric... | 07/28/1998 |
| 5762546 | Pneumatically assisted conformal tool for an ophthalmic lens finer/polisher A conformal tool for fining/polishing ophthalmic lenses has a rigid base, a substantially air impervious elastic membrane and a bladder conformable to a surface of the lens to be fined/polished. The perimeters of the base, the membrane and the bladder are... | 06/09/1998 |
| 5746436 | Air pressurized chuck An air pressurized chuck has a spindle journalled in a housing for rotation about a longitudinal axis. One means is mounted in a penultimate portion of the spindle and rotatable therewith for longitudinally reciprocating along the axis in one direction in... | 05/05/1998 |
| 5662518 | Pneumatically assisted unidirectional conformal tool A tool for polishing/fining an ophthalmic lens has a housing with an interior open at planar ends thereof. A cluster of rods is longitudinally aligned in sliding abutment within the housing, each rod of the cluster extending from one planar end of the hou... | 09/02/1997 |
| 5649856 | Tear-away block for an ophthalmic lens A block for coupling an ophthalmic lens to at least two machine chucks is molded, preferably using adhesive material in a liquid or gel state, as a unitary member of diameter less than a diameter of the lens with concentric inner and outer portions separa... | 07/22/1997 |
| 5648025 | Method for making light cured ophthalmic lens blocks A machine and process for making an ultraviolet cured block for an ophthalmic lens are provided in which a lens is placed at an input port to the machine by an operator. Data related to the lens is fed to or stored in the machine from either a keyboard or... | 07/15/1997 |
| 5625267 | Constant delay filtering for synchronized motion on multiple axes In a linear feedback servo control system, the motion profile for each axis is pre-filtered before it is introduced to the servo loop for that axis. The motion profile is pre-filtered by a filter having an inverse amplitude response to the amplitude respo... | 04/29/1997 |
| 5610823 | Method for spindle speed optimization of motion profile A method of speed optimization of a spindle component of a machine having multiple synchronized components moving along multiple axes over a motion profile. The method including a first step further including: obtaining a motion error value of a synchrono... | 03/11/1997 |
| 5582085 | Dynamic infeed control with workpiece oscillation for segmenting swarf in a lathe application A dynamic infeed control is used to segment swarf produced in a lathing operation into short manageable segments. The preferred dynamic method for segmenting the swarf is to add a sine wave motion to the nominal infeed motion. The amplitude of the sine wa... | 12/10/1996 |
| 5577950 | Conformal tool operating apparatus and process for an ophthalmic lens finer/polisher A tool for fining/polishing an opthalmic lens has a spindle and a pliant casing containing a conformable filler connected to the spindle for rotation therewith. A pliant pad adhered to the casing has a plurality of slots extending from its perimeter towar... | 11/26/1996 |
| 5567198 | Compression sleeve ophthalmic lens chuck An ophthalmic lens block and lens generating machine compression sleeve chuck are provided such that the block is of diameter suitable for the lens edging step of the lens generating process. The lens generating chuck consists of a plurality of concentric... | 10/22/1996 |
| 5542876 | V-profile grinding wheel A grinding wheel for V-profiling ophthalmic lenses of various diameters, powers and thicknesses has a V-shaped groove circumferentially thereabout which defines a forward V surface and a rear V surface meeting at a nadir of the groove. A rear flat surface... | 08/06/1996 |
| 5512004 | Lens edging machine bevel control process An improved process for positioning a bevel along the edge of an opthamalic lens computes point-to-wheel data definitive of a planar relationship between the lens and the wheel, stores the point-to-wheel data, computes corrected horizontal displacement da... | 04/30/1996 |
| 5489954 | Lens projecting device A lens projector is provided for use with a lens blocking device having an LCD target display plane disposed beneath a work surface and a tower having an upper portion extending above the work surface with a eyepiece therethrough. The lens projector inclu... | 02/06/1996 |
| 5377456 | Eyeglass frame measuring cradle In accordance with the invention a holder is provided for an eyeglass frame having a pair of lens rims spaced apart by a bridge. A pair of supports are fixed in spaced apart relationship on a base plate and a cradle is journalled between the supports to r... | 01/03/1995 |
| 5320006 | Methods and apparatus for producing ophthalmic lenses An initial curvature is cut into a lens blank in a lens making machine, such as a lathe, and the curvature is subsequently finished by a finishing tool. The finishing tool has curve characteristics which correspond to those of a prescription within a pres... | 06/14/1994 |
| 5283980 | Lens blocker A computer is used to calculate the location of a target, customize the target to conform to the lens, frame and patient characteristics of each individual job and automatically compensate for parallax in the apparatus. A convenient open work surface is p... | 02/08/1994 |
| 5181345 | Lens grinding method and apparatus A lens grinding apparatus is capable of generating, in a lens blank, a power curve less than three diopters and having both a base characteristic and a cross curve characteristic. A plate is pivotably mounted on a base means, a first slide is slidably mou... | 01/26/1993 |
| 5157875 | Apparatus for cutting and shaping material An apparatus for cutting and shaping a material is disclosed which includes securing means for securing an adaptor having a lens blank or a semi finished lens is fixed thereto to apparatus for working. The securing means comprises a generally cylindrical ... | 10/27/1992 |
| 5105584 | Lens cutting assembly and method and apparatus for effecting rapid replacement of lens cutting tools Quick-change methods and apparatus enable the cutting tool of a lens cutting machine to be exchanged with minimal down time of the machine. A replacement cutting tool is gauged in an off-machine gauging mechanism while the machine is able to continue an o... | 04/21/1992 |
| 4993195 | Lens cutting methods for effecting rapid replacement of lens cutting tools Quick-change methods and apparatus enable the cutting tool of a lens cutting machine to be exchanged with minimal down time of the machine. A replacement cutting tool is gauged in an off-machine gauging mechanism while the machine is able to continue an o... | 02/19/1991 |
| 4928433 | Apparatus for effecting rapid replacement of lens cutting tools Quick-change methods and apparatus enable the cutting tool of a lens cutting machine to be exchanged with minimal down time of the machine. A replacement cutting tool is gauged in an off-machine gauging mechanism while the machine is able to continue an o... | 05/29/1990 |
| 4866884 | Lens grinding methods and apparatus A lens grinding machine includes a grinding tool mounted on a tool support, and a lens holder mounted in a tailstock assembly. The lens is positioned for grinding by advancing the tailstock assembly into engagement with the tool support. A push-back membe... | 09/19/1989 |
| 4623708 | Prepolymerization of monomer compositions containing diethylene glycol bis(allyl carbonate) A prepolymerization step prior to casting reduces shrinkage during polymerization of a composition containing diethylene glycol bis(allyl carbonate) with up to 40% of a vinyl ester, preferably vinyl acetate, and one or more free radical type initiators. T... | 11/18/1986 |
