Patent US4831290A successfully refreshed from Google Patents.
US4831290A
Expired / Lapsed
US
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Linear unit for handling equipment
Assignee: Robert Bosch GmbH
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Filing: 1987-05-08
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Granted: 1989-05-16
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Expires: 2007-05-08
Abstract
Abstract A linear unit for handling equipment of industrial production is proposed, the longitudinally displaceably borne tool support (2 and 19) of which is designed as a gear rack of a linear motor (11 to 18 and 22 to 24) serving for driving the support.
Inventors
- 👤 Heinz Clauss
- 👤 Peter Drexel
- 👤 Gerhard Gosdowski
- 👤 Andreas Kettner
- 👤 Ernst Leisner
- 👤 Udo Schwarze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:44
CPC Classifications
H; H02; H02K; H02K41/00; H02K41/02; H02K41/03; H02K41/031; B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/56; B23Q1/58; Y; Y10; Y10S; Y10S29/00; Y10S29/057; Y10T; Y10T29/00; Y10T29/51; Y10T29/5152; Y10T29/5154; Y10T29/5157
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
71 words
A linear unit for handling equipment of industrial production, comprising: an electromagnetic linear drive unit including a magnetizable motor stator (17,24) and a motor rotor (2), said motor rotor being formed as a tool support (2), said stator being formed so as to longitudinally and displaceably guide said tool support (2), said tool support being formed as a gear rack having at least a portion composed of a magnetically conductive material.
Claim 2
Dependent Claim
71 words
A linear unit for handling equipment of industrial production, comprising: an electromagnetic linear drive unit including a magnetizable motor stator (17,24) and a motor rotor (2), said motor rotor being formed as a tool support (2), said stator being formed so as to longitudinally and displaceably guide said tool support (2), said tool support being formed as a gear rack having at least a portion composed of a magnetically conductive material.
Claim 3
Dependent Claim
30 words
The linear unit as defined in claim 1, wherein said tool support (2) has bearing surfaces, said gear rack having a toothing (12, 13, 22) fitted between said bearing surfaces.
Claim 4
Dependent Claim
37 words
The linear unit as defined in claim 1, wherein said tool support (2) is displaceable by said drive unit in a predetermined direction, said magnetically conductive material forming a strip (11) that extends in said predetermined direction.
Claim 5
Dependent Claim
65 words
The linear unit as defined in claim 2, wherein said tool support (2) has an outer periphery and is displaceable by said drive unit in a predetermined direction, said magnetically conductive material forming a strip (11), said toothing being formed as webs (12) running perpendicular to said predetermined direction in said strip, said strip (11) being fixed on said outer periphery of said tool support.
Claim 6
Dependent Claim
19 words
The linear unit as defined in claim 4, wherein said strip (11) is adhesively fixed to said tool support.
Claim 7
Dependent Claim
32 words
The linear unit as defined in claim 4, wherein said webs (12) are formed as punchouts in said strip (11) and extend perpendicular to said predetermined direction and are equally spaced apart.
Claim 8
Dependent Claim
36 words
The linear unit as defined in claim 2, wherein said tool support (2) is displaceable by said drive unit in a predetermined direction, said toothing (22) having milled teeth that run transverse to said predetermined direction.
Claim 9
Dependent Claim
36 words
The linear unit as defined in claim 2, wherein said tool support (2) is displaceable by said drive unit in a predetermined direction, said toothing (22) having sawed teeth that run transverse to said predetermined direction.
Claim 10
Dependent Claim
44 words
The linear unit as defined in claim 1, wherein said tool support is has a periphery formed with a plurality of peripheral portions with toothings, said drive unit includes a plurality of motor stators each associated with a respective one of said peripheral portions.
Claim 11
Dependent Claim
22 words
The linear unit as defined in claim 1, wherein said tool support is formed as a tube (19) with a cylindrical cross-section.
Claim 12
Dependent Claim
106 words
A linear unit for handling equipment of industrial production comprising an electromagnetic linear drive unit including a magnetizable motor stator (17, 24) and a motor rotor (2), said motor rotor being formed as a tool support (2), said stator being formed so as to longitudinally and displaceably guide said tool support (2), said tool support being formed as a gear rack having at least a portion composed of a magnetically conductive material, said strip having one side with a plurality of longitudinal slots (14) which lie one behind the other in said predetermined direction so as to serve as a magnetic shield for a position indicator.
Claim 13
Dependent Claim
106 words
A linear unit for handling equipment of industrial production comprising an electromagnetic linear drive unit including a magnetizable motor stator (17, 24) and a motor rotor (2), said motor rotor being formed as a tool support (2), said stator being formed so as to longitudinally and displaceably guide said tool support (2), said tool support being formed as a gear rack having at least a portion composed of a magnetically conductive material, said strip having one side with a plurality of longitudinal slots (14) which lie one behind the other in said predetermined direction so as to serve as a magnetic shield for a position indicator.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-15 | 1992-11-14 | 1993-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-15 | 1996-11-14 | 1997-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-15 | 2000-11-14 | 2001-05-16 | $7700.00 | Window Closed / Lapsed |