US4621436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Position detecting apparatus
Assignee: Sokkisha Co Ltd
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Filing: 1985-06-18
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Granted: 1986-11-11
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Expires: 2005-06-18
Abstract
Abstract A position detecting apparatus for generating a position detection signal when the sensor comes into contact with a workpiece is equipped with a swivel mechanism which allows the sensor to move in any direction within a constant range at the time of contact. This swivel mechanism comprises a metal cylinder for supporting the sensor, a mechanism for moving in the vertical direction guided by a center shaft supported by a swivel bearing, and a mechanism for moving the metal cylinder and center shaft in the horizontal direction. When the sensor contacts the workpiece, a display, for example, is lit up by a position detection circuit.
Inventors
- 👤 Masahiro Kurimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:57
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/004; G01B7/008; G01B7/012
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
176 words
A position detecting apparatus comprising: a housing having an opening in a wall thereof; a rod received within said opening and having one end tiltably coupled to said housing and its other end projecting from said housing; a conductive hollow shaft slidably accommodating said rod therein and having one end inside said housing and another end projecting further from said housing than the other end of said rod, said hollow shaft being movable from a rest position to a second position in which its one end is advanced further into said housing; first resilient means coupled between said housing and said hollow shaft for urging said hollow shaft to its rest position; means for retaining said hollow shaft in its rest position; second resilient means provided in said opening between said housing and said hollow shaft to oppose lateral movement of the hollow shaft; a conductive contact element engaging the other end of said hollow shaft; and position detection circuit means coupled to said contact element for generating a signal when said element contacts a workpiece.
Claim 2
Dependent Claim
176 words
A position detecting apparatus comprising: a housing having an opening in a wall thereof; a rod received within said opening and having one end tiltably coupled to said housing and its other end projecting from said housing; a conductive hollow shaft slidably accommodating said rod therein and having one end inside said housing and another end projecting further from said housing than the other end of said rod, said hollow shaft being movable from a rest position to a second position in which its one end is advanced further into said housing; first resilient means coupled between said housing and said hollow shaft for urging said hollow shaft to its rest position; means for retaining said hollow shaft in its rest position; second resilient means provided in said opening between said housing and said hollow shaft to oppose lateral movement of the hollow shaft; a conductive contact element engaging the other end of said hollow shaft; and position detection circuit means coupled to said contact element for generating a signal when said element contacts a workpiece.
Claim 3
Dependent Claim
20 words
A position detecting apparatus according to claim 1, wherein said conductive contact element is a metal with a ball shape.
Claim 4
Dependent Claim
32 words
A position detecting apparatus according to claim 2, wherein said hollow shaft is a hollow metal cylinder the tip of which has a shape corresponding to the shape of said contact element.
Claim 5
Dependent Claim
32 words
A position detecting apparatus according to claim 1, wherein said position detection circuit means comprises display means for displaying the position detection when said contact element comes into contact with said workpiece.
Claim 6
Dependent Claim
26 words
A position detecting apparatus according to claim 1, further comprising a swivel bearing secured to said housing and connected to the one end of said rod.
Claim 7
Dependent Claim
30 words
A position detecting apparatus according to claim 5, wherein said retaining means comprises a flange on the one end of said hollow shaft, said flange being larger than said opening.
Claim 8
Dependent Claim
18 words
A position detecting apparatus according to claim 6, further comprising an insulator between said flange and the housing.
Claim 9
Dependent Claim
21 words
A position detecting apparatus according to claim 6, wherein said first resilient means is compressed between said swivel bearing and saidhousing.
Claim 10
Dependent Claim
30 words
A position detecting apparatus according to claim 6, wherein said first resilient means is a spring having one end connected to the flange and another end coupled to the housing.
Claim 11
Dependent Claim
21 words
A position detecting apparatus according to claim 9, wherein said second resilient means comprises an elastic ring around said hollow shaft.
Claim 12
Dependent Claim
20 words
A position detecting apparatus according to claim 9, further comprising a linear bearing between said rod and said hollow shaft.
Claim 13
Dependent Claim
21 words
A position detecting apparatus according to claim 1, wherein said second resilient means comprises an elastic ring around said hollow shaft.
Claim 14
Dependent Claim
20 words
A position detecting apparatus according to claim 1, further comprising a linear bearing between said rod and said hollow shaft.
References Cited (Backward Citations)
GB903385A
Cited
GB1348367A
Cited
GB1589297A
Cited
US4279080A
Cited
GB2094478A
Cited
GB2089251A
Cited
US4447958A
Cited
EP0068899A2
Cited
US4549356A
Cited
US4530160A
Cited
US4530159A
Cited
DE3234470A1
Cited
US4535543A
Cited
GB2129133A
Cited
US4547971A
Cited
DE3331160A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-10 | 1990-05-12 | 1990-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-10 | 1994-05-12 | 1994-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-10 | 1998-05-12 | 1998-11-11 | $7700.00 | Window Closed / Lapsed |