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Class 33/31 - Right-angle guides


Subclass of Class 33 - Geometrical instruments
Definition: Devices comprising two guides at right angles to each other
No. of patents: 24
Last issue date: 03/14/2006


NumberTitleIssue Date
7010860Hand-held cutting device
A cutting device is operable with one hand for cutting a circle or an elliptical shape in a sheet of material. In a first embodiment for cutting elliptical shapes, the cutting device includes a first member for placement on the sheet material and a second member for...
03/14/2006
6962180Attachment fixture for manufacturing elliptical arches using a single-pass radius molding system
The present invention is an attachment fixture that is used in conjunction with a single-pass radius molding system to manufacture elliptical arches. The attachment fixture includes a vertical beam, a horizontal self-centering rack mounted at top end of the vertical...
11/08/2005
6668461Hand-held cutting device
A cutting device is operable with one hand for cutting a circle or an elliptical shape in a sheet of material. In a first embodiment for cutting elliptical shapes, the cutting device includes a first member for placement on the sheet material and a second...
12/30/2003
6484406Hand-held cutting devices
A cutting device is operable with one hand for cutting a circle or an elliptical shape in a sheet of material. In a first embodiment for cutting elliptical shapes, the cutting device includes a first member for placement on the sheet material and a second...
11/26/2002
6158133Oval cutter
An apparatus for rendering ovals of adjustable sizes and ellipticity upon various materials. An oval cutter comprises a clickerplate for adjusting the ellipticity of ovals in a single movement. The clickerplate can be rotated about a base using a knob mou...
12/12/2000
6052909Hand-held oval cutting device
A cutting device is operable with one hand for cutting an elliptical shape in a sheet of material. The cutting device includes an elliptically-shaped base plate for placement on the sheet material and a cutting member for simultaneous pivotal and translat...
04/25/2000
5555631Ellipse Scribe
An ellipse scribe for writing or cutting an ellipse onto or into a workpiece. Two perpendicular tracks each include a slider block which is capable of reciprocating within the tracks. The slider blocks are rotatably affixed at different points along the l...
09/17/1996
5526573Device for circumscribing circles and ellipses
A device for circumscribing selectively both circles and also ellipses of variable proportions includes a housing in which is rotatably mounted an armature. The armature is constrained to move on two axes disposed at right angles to one another, so as to ...
06/18/1996
5430946Device for circumscribing circles and ellipses
A device for circumscribing selectively both circles and also ellipses of variable proportions includes a housing in which is rotatably mounted an armature. The armature is constrained to move on two axes disposed at right angles to one another, so as to ...
07/11/1995
5189800Device for drawing elliptical curves
An elliptical curve drawing device draws an ellipse having desired minor and major axes along given central axes. The device includes a y-axis movable member movably mounted on a base plate for movement along a y-axis which extends perpendicularly to a st...
03/02/1993
5099727Mechanism and method for circumscribing oval shapes
A mechanism is provided for circumscribing oval paths, wherein a pivotably mounted element is dynamically oriented so as to maintain a functional axis thereof constantly tangent to the circumscribed path. An orienting arm attached to the mounted element i...
03/31/1992
5058282Ellipsograph
A trammel-beam ellipsograph is disclosed wherein the beam is made of two sliding elements in parallel relationship with a scribe-bearing cursor riding upon them. Each beam element is pivotably attached at one end to a slide restrained within one of two pe...
10/22/1991
4567927Apparatus for automatically forming ovals
An apparatus for forming elliptical shapes on a workpiece. The invention involves a support frame which includes a pair of uprights having cantilevered beams from which are suspended a support disk. A pair of mutually perpendicular trammel tracks are set ...
02/04/1986
4447954Ellipsograph
Drafting instrument for drawing ellipses using scribe arm and members capable of being pivotally connected at two points along the scribe arm, one of the members being constrained to move along a straight line congruent to the minor axis and the other of ...
05/15/1984
4356633Ellipsograph
An ellipse drawing device is disclosed which utilizes mounted on its lower surface a rotary arm and an elongated plate in conjunction, generating a straight line motion of a point on the elongated plate, grouped in perpendicular relation to the grooves on...
11/02/1982
4306598Ellipse cutting machine
A trammel beam carrying a pair of dove-tail shaped slider blocks rotatably carried on a pair of adjustable trammel points is attached to a workpiece support base which includes a pair of crossed right angle mutually perpendicular dove-tail tracks along wh...
12/22/1981
4244106Device for describing an ellipse
A device for describing an ellipse. An enclosed arcuate first slot extends through a cylindrical shell. A path-generating disc fits inside the shell and enables the shell to rotate relatively thereto, and to it is secured a square bottom plate having a pl...
01/13/1981
4182043Drawing instrument for an ellipse
A drawing instrument for drawing an ellipse having two arms extending to left and right associated with operating mechanisms, so that when the arms are opened by a turning force of a first arm, a center moves along the straight line C, C' at a right angle...
01/08/1980
4174572Drafting instrument
A drafting instrument for tracing curves such as ellipses. The instrument includes a base which is movable over a graphics surface. A marking element is carried by a writing arm connected with the base by linkage means which guides the marking element alo...
11/20/1979
4166320Apparatus for tracing ellipses
Apparatus for tracing elliptical curves comprising a T-shaped support member having perpendicular longitudinal and transverse branches and formed as a one piece injection molded body. The T-shaped member carries a point support on the longitudinal branch ...
09/04/1979
4148144Oval compass
An ellipse drawing instrument employing a drawing arm, and a pair of members adapted to be connected to the drawing arm at two spaced points on the drawing arm, one of the members being constrained to move along a first path and the other of said members ...
04/10/1979
4112793Device for cutting ovals in mats or glass sheets
A device for cutting ovals or circles in sheet material. A baseboard is secured adjustably atop a parallel pair of base channels by a combination of screws and coil springs. A base plate secured to one end of the baseboard supports (1) a pair of swivel-mo...
09/12/1978
4048724Ellipsograph
An ellipsograph characterized by a pair of rectilinearly slideable members disposed in 90° crossing relationship and adjustable radii crankpins for moving same, forming a pair of Scotch yokes, and a stylus carrying member slideably engaging both members ...
09/20/1977
4014101Ellipse drawing instrument
An ellipse drawing instrument which makes it possible to draw an ellipse easily and precisely without requiring special skill. The size and angle of the ellipse can be changed steplessly by a simple adjustment. It includes a base plate, a movable plate, a...
03/29/1977
 
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