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| Number | Title | Issue Date |
| 7604159 | Method and calculator for converting concrete reinforcing materials to an equivalent quantity of concrete reinforcing fibers Method for converting a first type of concrete reinforcing material to an equivalent quantity of concrete reinforcing fibers for designing a reinforced concrete slab. Fibers may be steel or other materials. User determines whether a slab to be reinforced is a lightl... | 10/20/2009 |
| 7363738 | Planar display device with sliding reveal member or members Display devices for, e.g., advertising purposes, are provided wherein at least one member slides relative to at least one other member to a “reveal” position so as to display new and different information. In one embodiment, two sheath members move relative to a... | 04/29/2008 |
| 7361021 | Jet lag forecaster Alertness level is predicted on computers or sliding charts by relationship of sleep drives and wake drives, which are separately moved relative to destination time and time zone differential. Wake drives are moved with home time. Sleep drive is moved with bedtime a... | 04/22/2008 |
| 7350311 | Pipe cutting template A universal reusable template for cutting ends of cylindrical objects such as pipes, in preparation for joining the cylindrical objects to other cylindrical bodies. The template is formed as a flat flexible bendable sheet with magnetic properties allowing the sheet ... | 04/01/2008 |
| 7290350 | Devices, systems, and methods for framing The invention is adapted particularly for simplifying the difficult task of measuring the openings of picture frame mats, and then transferring those measurements to a mitering machine for the purpose of accurately cutting, to the proper length, a piece of picture f... | 11/06/2007 |
| 7219068 | Method and system for product optimization A method and computer-implemented system for optimizing a product. Based on the “voice of the customer”, aspects of the product that are critical to the customer satisfaction, and target values, therefore, are identified. Aspects are characterized in terms of th... | 05/15/2007 |
| 6969793 | Piano key finder and chord indicator An instructional device for use by music students is constructed as an outer sleeve having a slide member fitted within it. The outer sleeve has first and second sets of openings and is imprinted with a representation of a piano keyboard. The slide member has alphab... | 11/29/2005 |
| 6954328 | Multi-layer housing structure with tuned layers using hypothetical modeling Apparatus and method for reducing generation of acoustic noise in a disc drive. A multi-layer disc drive housing structure includes a housing layer, a plurality of rigid damping layers and a corresponding plurality of interposed visco-elastic damping layers. Charact... | 10/11/2005 |
| 6915950 | Device and method for chronic wound condition treatment A device and method for chronic wound treatment is disclosed. The device is in the form of a slide rule which instructs the user regarding a recommended course of treatment based on the healing phase condition and moisture condition of the wound. ... | 07/12/2005 |
| 6330970 | Global time calculator A global time calculator includes an insert and a sleeve. The insert is marked on both its sides (or on a single page slide insert on one side) with vertical columns of incremental time designations, and may or may not contain a stop mechanism. The insert... | 12/18/2001 |
| 6254713 | Method for producing a composite-like information carrier A method for producing a composite layer-like information carrier with an upper and a lower cover layer (6) and a center intermediate layer (6), having two parallel separating slits extending through it in the longitudinal direction, so that a sliding ton... | 07/03/2001 |
| 6129388 | Slide chart with slide-stop flaps A slide chart in which the sleeve and the slide have mutually engaging flaps which click past one another upon insertion of the slide into the sleeve but engage to prevent withdrawal of the slide from the sleeve.... | 10/10/2000 |
| 6006986 | Global time calculator A global time calculator includes an insert and a sleeve. The insert is marked on both its sides (or on a single page slide insert on one side) with vertical columns of incremental time designations, and may or may not contain a stop mechanism. The insert... | 12/28/1999 |
| 5837981 | Signal outputting device of optical ruler A signal outputting device of optical ruler is disclosed. It includes a first guide seat formed with an internal axial chamber for receiving a reflecting plate therein, a second guide seat including a slide block axially movable within the chamber and a r... | 11/17/1998 |
| 5731572 | Six sigma calculator A slide rule permits rapid calculations of parameters used in the Six Sigma quality analysis program. For a given number of defects per product and a known number of parts per product (opportunities), the device permits rapid calculation of the number of ... | 03/24/1998 |
| 5717193 | Method and apparatus for determining the exponential powers of "i" The present invention provides methods and apparatus for readily determining the value of the imaginary number "i" raised to different exponential powers. Calculations pertaining to the imaginary "i" are commonly encountered in engineering, mathematical a... | 02/10/1998 |
| 5708260 | Slide-rule calculator for computing a salary replacement value A retirement calculator for calculating a salary replacement value independent of current salary and a method of computing a total salary replacement value are disclosed. The retirement calculator is made up of a sleeve having an open end and a plurality ... | 01/13/1998 |
| 5569896 | Method and apparatus for determining the exponential powers of "i" The present invention provides methods and apparatus for readily determining the value of the imaginary number "i" raised to different exponential powers. Calculations pertaining to the imaginary "i" are commonly encountered in engineering, mathematical a... | 10/29/1996 |
| 5449890 | Slide calculator with liner A slide calculator includes a sleeve having a plurality of windows for presenting data from three variables arranged in matrices of rows and columns. Opposite sides of the sliding card include data with the rows and columns interchanged. The sleeve surrou... | 09/12/1995 |
| 5401942 | Device for calculating no decompression dive times A new device including a new arrangement of dive tables is disclosed for planning non-decompression dives. The invention utilizes two separate scales, movable relative to one another. The first scale shows the pressure group scale, the bottom time or resi... | 03/28/1995 |
| 5310995 | Stairway calculator A slide rule comprises, to calculate the parameters of a stairway to be installed between lower and upper floor surfaces, (a) a first scale on a stationary body denoting the number of risers, (b) a second scale on a first slide denoting the elevation of t... | 05/10/1994 |
| 5148006 | Mechanical device for determining the modulus and loss factor of a damping material based upon temperature and frequency A device for providing the modulus and loss factor values of a damping material based upon temperature and frequency which includes (i) an insert having (a) temperature isotherms on one side, and (b) graphs of the modulus and loss factor values for the da... | 09/15/1992 |
| 4994657 | Estate and gift tax estimator An estate and gift tax estimator having a two-sided pocket part consisting of separate layers of semi-rigid material, whereby each layer is provided with a series of windows for viewing an insert card which is slideably engaged between the two layers defi... | 02/19/1991 |
| 4994656 | Logic design slide rule A logic design slide rule comprises, in a preferred embodiment, front and rear cover plates coupled together; interior slide channels formed between the covers; and a plurality of slides disposed between the covers and able to move horizontally from left ... | 02/19/1991 |
| 4960029 | Musical scale determining device A musical scale determining device which takes the form of a conventional slide rule configuration. The device includes a sheet material body. Upon both the front and back surface are printed conventional musical notes in specific arrangements. A cursor i... | 10/02/1990 |
| 4798940 | Manual calculator for analog and digital numbers A manual calculator useful in registering and converting whole and fractional numbers from one numbering system to another numbering system in which a plurality of slide members are arranged in an array within a cover, with each said slide member being mo... | 01/17/1989 |
| 4785164 | Slide calculator for background lighting There is disclosed herein a slide calculator for determination of flash-to-background distance for studio photography when using color filters over the flash. By use of the calculator, known factors, such as lens f-stop, film speed, flash guide number (GN... | 11/15/1988 |
| 4775779 | Slide rule for selecting material for constructing bearing A slide rule for selecting bearing materials has a base plate, a fixed cursor having first, second and third portions spaced apart from one another and fixedly attached to the base plate, a first sliding ruler slidably mounted between the first and second... | 10/04/1988 |
| 4772780 | Slide calculator for photographic lighting The object of the invention is to provide a slide calculator to make the determination of flash-to-subject working distances (WD) easy and accurate for amateur and professional photographers. Light sources other than flash can be used. The calculator uses... | 09/20/1988 |
| 4750398 | Chord speller A chord speller is provided and consists of a housing with a vertical slide member and a horizontal slide member intersecting and overlapping the vertical slide member. The horizontal slide member has a plurality of musical notes thereon while the vertica... | 06/14/1988 |
| 4678893 | Method and means for determining the ease with which a cow may give birth to a calf The present invention comprises a method and device for determining the ease with which a cow may give birth to a calf. It includes a slide rule having two movable slides and a fixed slide. The fixed slide includes a predicted calving score scale at one e... | 07/07/1987 |
| 4634147 | Redeemable coupon A refund coupon redeemable at a cash value at retail stores when a proof-of-purchase comprising a portion of a given product's packing packaging is affixed to the coupon. The coupon includes coupon indemnification indicia thereof corresponding to product ... | 01/06/1987 |
| 4585927 | Apparatus for predicting the exact time of currents in terms of the year, month, day and hour Apparatus for presenting tidetable data in a form visually readable to the average person in terms of the year, month, day and hour of occurrence, exacting information regarding current flow, i.e. the direction of current flow, the relative strength of cu... | 04/29/1986 |
| 4538055 | Slide rule A slide-rule is obtained by superpositioning and connecting three plates (1, 2, 3) into the middle one of which slots (20, 21) are milled, and thereafter cutting off the boundary areas (5, 6, 7, 8), including the boundary areas (5, 6) of the middle plate ... | 08/27/1985 |
| 4454410 | Multi-variable analog computer An analog computer for solving and displaying an answer to a multivariable problem includes a bottom plate upon which a matrix of the solution set to the problem appears. Overlying the bottom plate is a series of aperture plates, corresponding in number t... | 06/12/1984 |
| 4425499 | Decision tree graphical computer A graphical logic computer is formed by apertured parameter slides that are moved back and forth in an envelope between an apertured cover member and a back panel. The cover member has an event network with paths that branch from and connect event windows... | 01/10/1984 |
| 4390778 | Calculator for determining optimum tone reproduction A mid-tone calculator for determining density reproduction to maximize color reproduction in a lithograph tone process. The calculator includes a base having a longitudinal guideway therein, an original density scale thereon and a density compression scal... | 06/28/1983 |
| 4368044 | Bowler's approach starting location calculating device A calculating device for a bowling game whereby a bowler can readily ascertain an optimum approach starting location for throwing a bowling ball along a path which will maximize the number of pins knocked down. The calculating device comprises a first mem... | 01/11/1983 |
| 4352978 | Analog balance A calculating device comprising a rockable cradle having a number of parallel grooves formed in its upper surface, each of which supports a beam provided on at least one of its faces with a calculating scale so that the beam has sliding movement within th... | 10/05/1982 |
| 4272107 | Tide time indicator A tidal time indicator for determining tide times at various locations on a specific stretch of coastline comprises a pair of complementary charts. One of the charts is in the form of a map having index marks representing the various locations and which m... | 06/09/1981 |
