Source: http://www.google.com/patents/US8094121?dq=6,418,462
Timestamp: 2017-12-15 04:43:32
Document Index: 709021238

Matched Legal Cases: ['Application No. 92128428', 'Application No. 92128428', 'Application No. 92128428', 'Application No. 038134829', 'application No. 2003', 'Application No. 2003']

Patent US8094121 - Multi-axis joystick and transducer means therefore - Google Patents
The invention relates to improved multi-axis joysticks and associated multi-axis optical displacement measurement means. The joystick may comprise elements movable with respect to each other in at least, e.g., three degrees of freedom and comprise ionically conductive elements that are utilized to generate...http://www.google.com/patents/US8094121?utm_source=gb-gplus-sharePatent US8094121 - Multi-axis joystick and transducer means therefore
Publication number US8094121 B2
Application number US 12/349,359
Also published as CN1692401A, CN1692401B, EP1514257A1, EP1514257A4, US7474296, US8816962, US20050162389, US20090213073, US20120162076, US20130265233, US20150153842, WO2003088204A1
Publication number 12349359, 349359, US 8094121 B2, US 8094121B2, US-B2-8094121, US8094121 B2, US8094121B2
Inventors Henry K. Obermeyer, Fritz H. Obermeyer, Leslie Obermeyer
Original Assignee Henry K. Obermeyer, Fritz H. Obermeyer
Patent Citations (144), Non-Patent Citations (173), Referenced by (84), Classifications (19), Legal Events (2)
US 8094121 B2
FIG. 10 b is an additional cross section view of the embodiment of FIG. 10 a.
FIGS. 11 a, 11 b, 11 c and 11 d are plan, cross-sectional, perspective, and exploded views respectively of an example magnetic flux sensor embodiment of the present invention.
FIG. 15 b is an exploded view of the embodiment of FIG. 15 a.
FIG. 15 c is an assembled, transparent view of the embodiment of FIG. 15 a
FIG. 15 d is another exploded view of the embodiment of FIG. 15 a.
FIG. 15 e is sectional view similar to FIG. 15 a.
FIG. 18 b is another elevation view of the sensor element depicted in FIG. 18 a.
FIG. 18 c is a plan view of the sensor element depicted in FIG. 18 a,
FIG. 18 d is a perspective view of the sensor element depicted in FIG. 18 a.
FIG. 18 e is a representative equivalent circuit of the sensor element depicted in FIG. 18 a.
FIGS. 19 a, 19 b, 19 c, and 19 d are respectively, a perspective view, an elevation view, another elevation view, and a plan view of a sensor assembly in accordance with yet another elastomeric embodiment of the present invention.
FIG. 19 e is a representative equivalent circuit of the sensor assembly of the elastomeric embodiment of the present invention as it is depicted in FIGS. 19 a, 19 b, 19 c, and 19 d.
FIGS. 20 a and 20 b are plan view and sectional elevation view of one of several electrolyte filled elastomeric embodiments of the present invention.
FIG. 21 b is a view of a single transducer subassembly of the transducer assembly depicted in FIGS. 21 a, 21 d, 21 e, and 21 f.
FIG. 21 c is section A-A taken through FIG. 21 b.
FIG. 40 b is a cross sectional view of the sensing element of FIG. 40 a.
FIG. 49 b is a sectional elevation view of the embodiment shown in FIG. 49 a
FIG. 49 c is an exploded view of the embodiment shown in FIG. 49 a.
FIG. 49 d is a perspective view of a portion of FIG. 49 a.
FIG. 50 a is a cutaway view of one embodiment of the present invention featuring a monolithic optical position transducer.
FIG. 50 b is an exploded view of the embodiment of FIG. 50 a.
FIG. 50 c is a perspective view of the monolithic position transducer from FIG. 50 b.
FIG. 51 b is a bottom view of the embodiment of FIG. 51 a.
FIG. 51 c is an end view of the embodiment of FIG. 51 a.
FIG. 51 d is a side view of the embodiment of FIG. 51 a.
FIG. 51 e is a top view of the embodiment of FIG. 51 a.
FIG. 51 f and FIG. 51 g are perspective views of the embodiment of FIG. 51 a.
FIG. 54 b is a partial edge view of the embodiment of FIG. 54 a
Referring now to FIG. 5, mirror assembly and active grip 1 may incorporate truncated mirror facets 2 a, 2 b, 2 c, 2 d, 2 e, and 2 f. Light from emitter 4 may follow paths 14 which may impinge of the edges of mirror facets 2 a, 2 b, 2 c, 2 d, 2 e, and 2 f. That light which strikes said mirror facets may reach photo detectors 5 a, 5 b, 5 c, 5 d, 5 e and 5 f. That portion of light which strikes light absorbent surface 41 may not reach said detectors. This arrangement is thus sensitive to the relative movement of the edges of mirror facets 2 a, 2 b, 2 c, 2 d, 2 e, and 2 f.
Referring now to FIG. 6, a monolithic photo transducer package is shown comprised of casing 44, photo detectors 42 a, 42 b, 42 c, 42 d, 42 e, and 42 f, photo emitter 43, and electrical connection 45. Such a monolithic transducer may be more robust than printed circuit board mounted transducers and may thus not be subject to optical misalignment due to handling during manufacture or due to high g forces due to being dropped on the floor for example. The monolithic package may also be advantageously used to grind flush and thereby remove the collimating lenses that are standard as-manufactured features of many discrete photo transducer components. Although not depicted in FIG. 6, such a monolithic package may also be configured to retain a spring used to support the active grip.
Referring to FIGS. 18 a, 18 b, 18 c, and 18 d, various views are shown of another Embodiment of an elastomeric sensing element 60 of this invention. Upper electrical terminals are designated 61 a, 61 b, and 61 c. Lower electrical terminals are designated 62 a, 62 b, and 62 c. This embodiment may be superior to the embodiment of FIGS. 15 a through 15 e due to a reduced or eliminated electrical current through equivalent resistances 71 a, 71 b, 71 c, 71 d, 71 e, and 71 f as depicted in FIG. 17. Additionally, the mechanical stiffness along the various axes may be readily tailored by controlling the shapes and angles of the elastomeric “legs” 70 a, 70 b, 70 c, 70 d, 70 e, and 70 f.
Referring to FIG. 18 e, a representative equivalent circuit is shown wherein variable resistances 70 a through 70 f represent the resistances of the “legs” of the same designation in FIGS. 18 a through 18 d.
Referring to FIGS. 19 a, 19 b, 19 c, and 19 d, various views are shown of yet another embodiment of the current invention wherein a plurality of discrete elastomeric sensing elements 75 a, 75 b, 75 c, 75 d, 75 e, and 75 f may replace the single elastomeric sensing element 60 of the preceding figures. Electrical terminals 72 a through 72 f and 73 a through 73 f may fix said elastomeric sensing elements to upper circuit board 66 and lower circuit board 67. The upper circuit board 66 and lower circuit board 67 may be fixed to a grip and pedestal or base portion as depicted in other views. The size and shape of the discrete sensing elements may be selected to optimize the stiffness characteristics, strength, and ergonomic feel along each axis.
Referring to FIG. 19 e, a representative equivalent circuit is shown corresponding to the plurality of elastomeric sensing elements of FIGS. 19 a through 19 d.
Referring to FIG. 20 a and FIG. 20 b, a plan view and cross section view, respectively, are shown of another embodiment of the present invention wherein a cavity 76 containing an electrically conducting liquid or gel, hereinafter referred to simply as “electrolyte”, may be provided within a deformable elastomeric structure 77. A deformable element containing an ionically conducting liquid may hereafter be referred to as a deformable liquid element. A deformable element containing an ionically conducting gel may hereafter be referred to as a deformable gel element. Such deformable elements may be deformed with respect to electrical resistance by elongation, shortening, dilation, narrowing, electrode shading, etc. A plurality of electrical terminals 81 a, 81 b, 81 c, 82 a, 82 b, and 82 c may provide for connection of appropriate electrical circuitry for measurement of electrical resistance along various axes. Upper electrical terminals 81 a, 81 b, and 81 c are preferably equally spaced 120 degrees apart and are preferably angularly offset from lower electrical terminals 82 a, 2 b, and 82 c, which are also equally spaced 120 degrees apart. The outer rim of elastomeric structure 77 may be radially stiffened by insert 78. A cover 80 may be used to shield electrical terminals 81 a, 81 b, and 81 c. Retainer 79 may be used to fix elastomeric structure 77 to pedestal 63.
Referring now to FIG. 40 b, a cross sectional view is shown of the sensing element of FIG. 40 a.
Referring now to FIG. 46, a cross section is shown of an embodiment of the present invention similar to the embodiment shown in FIGS. 15 a through 15 e.
Referring now to FIG. 47, an example electrical signal scheme is shown wherein a three phase excitation Voltage represented by Voltages A, B, and C is applied to one set of terminals such as 61 a, 61 b, and 61 c of the embodiment of FIGS. 15 a through 15 e. Six degree of freedom position information may be obtained, for example, by measurement of the Voltage and phase angle of Voltages D, E, and F as would be available for measurement at terminals 62 a, 62 b, and 62 c in the embodiment of FIGS. 15 a through 15 e.
a → A = ( g x + θ ¨ · r A , g y + V A 2 r A )
a → B = ( g x + θ ¨ · r B , g y + V B 2 r B )
V A 2 r A
V B 2 r B
are tangential velocities. | g|={square root over (gx 2+gy 2)}, so finding gy gives: gx={square root over (g2−gy 2)}thus:
θ = arctan ( g y g x ) = arctan ( g y g 2 - g y 2 )
a A , y = ( g y + ( r A · θ . ) 2 r A ) = g y + r A · θ . 2
a B , y = ( g y + ( r B · θ . ) 2 r B ) = g y + r B · θ . 2
⇒ ( g y + r 1 · θ . 2 ) - r A r B ( g y + r 2 · θ . 2 ) = ( 1 - r 1 r 2 ) g y
g y = a A , y - r A r B a B , y 1 - r A r B ⇒ θ = arctan ( a A , y - r A r B a B , y 1 - r A r B g 2 - ( a A , y - r A r B a B , y 1 - r A r B ) 2 )
θ . = a A , y - g y r A = a B , y - g y r B
θ ¨ = a A , x - g x r A = a A , x - g 2 - [ a A , y - r A r B a B , y 1 - r A r B ] 2 r A
θ ¨ = a A , x - a B , x ( r A - r B )
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International Classification G06F3/033, G09G5/08, G09G5/00, G05G9/047
Cooperative Classification G06F3/0338, G09G5/00, G01D5/285, G05B2219/35419, G05G9/04737, G05G2009/04755, G05G2009/04759, G05G9/047, A63F2300/105, A63F2300/1043, G06F3/016
European Classification G05G9/047, G06F3/0338
Owner name: OBERMEYER, HENRY K., COLORADO
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Owner name: OBERMEYER, FRITZ R., COLORADO