Patent US4513228A successfully refreshed from Google Patents.
Patent EP0393994A2 successfully refreshed from Google Patents.
EP0393994A2
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EP
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A linear driving apparatus
Assignee: Sharp Corp
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Filing: 1990-04-17
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Granted: —
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Expires: 2010-04-17
Abstract
Abstract In a linear motor comprises one or more moving units provided to move linearly on a base frame, one or more magnetic field forming members to opposed each of the moving units, and moving means provided on said magnetic forming members for moving the magnetic forming members on the base frame by reaction force occurring when the moving units are driven, whereby vibration acting on the base frame at the time of moving of the linear motor can be cancelled by the motion of the magnetic field forming members.
Inventors
- 👤 Hiroshi Ishii
- 👤 Hiroyuka Sawai
- 👤 Masaaki Ozaki
- 👤 Toshiaki Kagawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 19:51
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/70; G03F7/70691; G03F7/70766; B; B41; B41J; B41J19/00; B41J19/18; B41J19/20; B41J19/30; B41J19/305; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/522; G03B27/525; G03B27/526; G03F7/70758; G03F7/708; G03F7/70858; G03F7/709; G03G; G03G15/00; G03G15/04; G11; G11B; G11B33/00; G11B33/02; G11B33/08; H; H02; H02K; H02K41/00; H02K41/02; H02K41/03; H02K41/031; G03G15/043; G03G15/0435
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
61 words
A linear driving apparatus comprising one or more moving units provided to move linearly on a base frame, one or more magnetic field forming members to opposed each of the moving units, and moving means provided on said magnetic forming members for moving the magnetic forming members on the base frame by reaction force occurring when the moving units are driven.
Claim 2
Dependent Claim
61 words
A linear driving apparatus comprising one or more moving units provided to move linearly on a base frame, one or more magnetic field forming members to opposed each of the moving units, and moving means provided on said magnetic forming members for moving the magnetic forming members on the base frame by reaction force occurring when the moving units are driven.
Claim 3
Dependent Claim
26 words
The linear driving apparatus according to claim 1, wherein said apparatus further comprises retraction means for retracting said magnetic field forming members to the home position.
Claim 4
Dependent Claim
41 words
The linear driving apparatus according to claim 2, wherein said retracting means is formed by a motor to move the magnetic field forming members in response to the signal representing the movement of the magnetic field forming members or moving unit.
Claim 5
Dependent Claim
88 words
A linear driving apparatus comprising a base frame, a magnetic field forming member constituted to move relatively linearly with respect to the base frame, and a movable member which is disposed on said magnetic field forming member and constituted to move relatively linearly with respect to the base frame by said magnetic field forming member, being so constituted as to absorb the repelling force formed on said magnetic field forming member when said relative linear movement of said movable member takes place by said magnetic field forming member.
Claim 6
Dependent Claim
88 words
A linear driving apparatus comprising a base frame, a magnetic field forming member constituted to move relatively linearly with respect to the base frame, and a movable member which is disposed on said magnetic field forming member and constituted to move relatively linearly with respect to the base frame by said magnetic field forming member, being so constituted as to absorb the repelling force formed on said magnetic field forming member when said relative linear movement of said movable member takes place by said magnetic field forming member.
Claim 7
Dependent Claim
104 words
A linear driving apparatus in which drive force due to magnetic fluxes caused by a magnetic field forming member is applied to a movable member so that a movable object to be moved is linearly moved alternately, comprising: first guide means for slidably shifting said movable member in the direction of said drive force; second guide means for slidably shifting said magnetic field forming member with its length shorter than the distance of the movement of said movable object in parallel with the direction of said drive force; and drive means for linearly driving said magnetic field forming member along said second guide means.
Claim 8
Dependent Claim
104 words
A linear driving apparatus in which drive force due to magnetic fluxes caused by a magnetic field forming member is applied to a movable member so that a movable object to be moved is linearly moved alternately, comprising: first guide means for slidably shifting said movable member in the direction of said drive force; second guide means for slidably shifting said magnetic field forming member with its length shorter than the distance of the movement of said movable object in parallel with the direction of said drive force; and drive means for linearly driving said magnetic field forming member along said second guide means.
Claim 9
Dependent Claim
82 words
A linear driving apparatus for linearly driving an object to be driven, said apparatus being provided on a vibration eliminating table placed on the floor surface interposed by a pneumatic spring or other vibration absorbing member, for linearly driving an object to be moved by applying a steering force to the movable element under the magnetic flux from the magnetic field forming member, said magnetic field forming member being freely linearly movable in the anti-steering force direction on said vibration eliminating table.
Claim 10
Dependent Claim
82 words
A linear driving apparatus for linearly driving an object to be driven, said apparatus being provided on a vibration eliminating table placed on the floor surface interposed by a pneumatic spring or other vibration absorbing member, for linearly driving an object to be moved by applying a steering force to the movable element under the magnetic flux from the magnetic field forming member, said magnetic field forming member being freely linearly movable in the anti-steering force direction on said vibration eliminating table.
Claim 11
Dependent Claim
59 words
Apparatus for linearly moving a displaceable member relative to a base member by means of a magnetic field produced by a magnetic field forming unit, wherein the force of reaction applied to said unit when a moving force is applied to the displaceable member is at least partly absorbed by movement of said unit relative to said base member.
Claim 12
Dependent Claim
59 words
Apparatus for linearly moving a displaceable member relative to a base member by means of a magnetic field produced by a magnetic field forming unit, wherein the force of reaction applied to said unit when a moving force is applied to the displaceable member is at least partly absorbed by movement of said unit relative to said base member.
References Cited (Backward Citations)
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