US5229742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joystick
Assignee: Kyocera Corp
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Filing: 1991-06-17
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Granted: 1993-07-20
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Expires: 2011-06-17
Abstract
Abstract A control stick is supported in an outer case such that it can be swung in two orthogonal directions. A moving member is fitted to the lower portion of the control stick through a coil spring. The lower end of the moving member is urged by the coil spring to a rotation-symmetrical cup-shaped inside surface of a guide case so as to make pressure contact with the inside surface. The curvature of the inside surface is determined so as to provide such a relationship that a contraction length of the coil spring is proportional to a square root of a tilt angle of the control stick from its neutral position.
Inventors
- 👤 Tsutomu Miyamoto
- 👤 Chikara Saitoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:47
CPC Classifications
G; G05; G05G; G05G5/00; G05G5/05; G05G9/00; G05G9/02; G05G9/04; G05G9/047; G05G9/04785; H; H01; H01C; H01C10/00; H01C10/04; H01C10/14; G05G2009/04703; G05G2009/04714; G05G2009/04718; G05G2009/0474; G05G2009/04748; G05G2009/04766
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
115 words
A joystick comprising: a control stick supported in an outer case such that the control stick can be swung in two orthogonal directions; a coil spring; a moving member coaxially fitted to a lower portion of the control stick through the coil spring; and a guide member having a rotation-symmetrical cup-shaped inside surface to which a lower end of the moving member is urged by the coil spring so as to make pressure contact with the inside surface, the inside surface having a curvature which provides such a relationship that a contraction length of the coil spring is proportional to a square root of a tilt angle of the control stick from its neutral position.
Claim 2
Dependent Claim
115 words
A joystick comprising: a control stick supported in an outer case such that the control stick can be swung in two orthogonal directions; a coil spring; a moving member coaxially fitted to a lower portion of the control stick through the coil spring; and a guide member having a rotation-symmetrical cup-shaped inside surface to which a lower end of the moving member is urged by the coil spring so as to make pressure contact with the inside surface, the inside surface having a curvature which provides such a relationship that a contraction length of the coil spring is proportional to a square root of a tilt angle of the control stick from its neutral position.
Claim 3
Dependent Claim
19 words
A joystick according to claim 1, wherein the moving member includes a rotary spherical member at the lower end.
Claim 4
Dependent Claim
81 words
A joystick, comprising: a frame; a control stick pivotally supported by the frame; a guide member having a guide surface spaced from the control stick; and a spring having at least a portion positioned between the control stick and the guide member guide surface; wherein the guide surface is shaped so as to cause the spring to contract a distance which is proportional to the square root of the pivot angle of the control stick as the control stick is pivoted.
Claim 5
Dependent Claim
81 words
A joystick, comprising: a frame; a control stick pivotally supported by the frame; a guide member having a guide surface spaced from the control stick; and a spring having at least a portion positioned between the control stick and the guide member guide surface; wherein the guide surface is shaped so as to cause the spring to contract a distance which is proportional to the square root of the pivot angle of the control stick as the control stick is pivoted.
Claim 6
Dependent Claim
112 words
A joystick, comprising: a frame; a control stick pivotally supported by the frame and having a central position; a guide member having a non-circular guide surface spaced from the control stick; and spring means coupled to the control stick for resiliently engaging the guide member surface so as to exert a holding force on the control stick as the control stick is pivoted, said holding force being directed to return the control stick to the central control position; position the non-circular guide surface is shaped so that the holding force exerted by the spring means is substantially independent of the pivot angle of the control stick as the control stick is pivoted.
Claim 7
Dependent Claim
112 words
A joystick, comprising: a frame; a control stick pivotally supported by the frame and having a central position; a guide member having a non-circular guide surface spaced from the control stick; and spring means coupled to the control stick for resiliently engaging the guide member surface so as to exert a holding force on the control stick as the control stick is pivoted, said holding force being directed to return the control stick to the central control position; position the non-circular guide surface is shaped so that the holding force exerted by the spring means is substantially independent of the pivot angle of the control stick as the control stick is pivoted.
Claim 8
Dependent Claim
116 words
A joystick, comprising: a control stick; a frame pivotally supporting the control stick so as to allow pivotal motion of the control stick in at least two orthogonal directions; a guide member having a rotationally symmetric and cup-shaped guide surface spaced from the control stick; a spring coupled at one end to the control stick; and an engagement member coupled to the other end of the spring and engaging the guide member guide surface; wherein the guide surface is shaped so as to engage the engagement member and cause the spring to contract a distance which is proportional to the square root of the pivot angle of the control stick as the control stick is pivoted.
Claim 9
Dependent Claim
116 words
A joystick, comprising: a control stick; a frame pivotally supporting the control stick so as to allow pivotal motion of the control stick in at least two orthogonal directions; a guide member having a rotationally symmetric and cup-shaped guide surface spaced from the control stick; a spring coupled at one end to the control stick; and an engagement member coupled to the other end of the spring and engaging the guide member guide surface; wherein the guide surface is shaped so as to engage the engagement member and cause the spring to contract a distance which is proportional to the square root of the pivot angle of the control stick as the control stick is pivoted.
References Cited (Backward Citations)
US4500867A
Cited
US4733214A
Cited
US4590454A
Cited
US4587510A
Cited
US4590339A
Cited
US4795952A
Cited
US4849583A
Cited
US4763100A
Cited
US4812802A
Cited
US4825157A
Cited
US4857881A
Cited
US5050449A
Cited
US4912997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-19 | 1997-01-18 | 1997-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-19 | 2001-01-18 | 2001-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-19 | 2005-01-18 | 2005-07-20 | $7700.00 | Window Closed / Lapsed |