US3632031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Actuator mechanism
Assignee: Plessey Overseas Ltd
•
Filing: 1970-02-06
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Granted: 1972-01-04
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Expires: 1990-02-06
Abstract
Abstract An actuator mechanism comprising a pair of opposed rollers between which an elongate member is fed, each of the rollers being provided with a friction band extending over at least part of its circumference contact between each roller and said member being made through the respective friction band, with at least one of said rollers being caused to be rotated to effect longitudinal movement of the elongate member.
Inventors
- 👤 John R Gurner
- 👤 Leslie A Henman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:08
CPC Classifications
F; F16; F16H; F16H19/00; F16H19/02; F16H19/06; F16H19/0663
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
130 words
An actuator mechanism comprising two pivoted arm members the pivotal axes of which are disposed parallel to one another, said members being spaced apart in a direction perpendicular to the direction of said pivotal axes, two opposed roller assemblies each comprising two rollers between which roller assemblies an elongate member to be moved is adapted to be positioned, one roller assembly being carried by each pivoted arm member, a friction band extending over at least part of the circumference of each roller, through which band each roller is adapted to make contact with the elongate member, spring means for causing corresponding rollers of each roller assembly to be urged together, and drive means for causing each of said rollers to be rotated thereby to effect longitudinal movement of said member.
Claim 2
Dependent Claim
130 words
An actuator mechanism comprising two pivoted arm members the pivotal axes of which are disposed parallel to one another, said members being spaced apart in a direction perpendicular to the direction of said pivotal axes, two opposed roller assemblies each comprising two rollers between which roller assemblies an elongate member to be moved is adapted to be positioned, one roller assembly being carried by each pivoted arm member, a friction band extending over at least part of the circumference of each roller, through which band each roller is adapted to make contact with the elongate member, spring means for causing corresponding rollers of each roller assembly to be urged together, and drive means for causing each of said rollers to be rotated thereby to effect longitudinal movement of said member.
Claim 3
Dependent Claim
27 words
An actuator mechanism according to claim 1, comprising a drive roller associated with each roller assembly and motor means for causing said drive rollers to be rotated.
Claim 4
Dependent Claim
31 words
An actuator mechanism according to claim 2, in which each drive roller is rotatable about the pivotal axis of the arm member carrying the roller assembly with which it is associated.
Claim 5
Dependent Claim
64 words
An actuator mechanism according to claim 3, in which each of the rollers of the two roller assemblies is provided with a circumferential friction band, and in which each drive roller is effective for driving one of the rollers with which it is associated, the said one of the rollers being effective for driving the other of the rollers with which it is associated.
Claim 6
Dependent Claim
20 words
An actuator mechanism according to claim 4, in which the drive between rollers takes the form of a chain drive.
Claim 7
Dependent Claim
85 words
An actuator mechanism according to claim 3, in which each of the rollers is provided with a number of transverse grooves around its circumference and in which the rollers of each roller assembly and the drive roller associated therewith are interconnected by means of an endless toothed belt, teeth of said belt engaging with said grooves in said rollers, the part of the belt in contact with each roller forming the friction band by means of which it is adapted to contact the elongate member.
Claim 8
Dependent Claim
31 words
An actuator mechanism according to claim 1, comprising drive release means for causing corresponding rollers of each roller assembly to be prised apart to facilitate initial insertion of the elongate member.
Claim 9
Dependent Claim
45 words
An actuator mechanism according to claim 7, in which the drive release means comprises a further roller attached to each of the pivoted arm members, and screw means located in an end plate of said mechanism for causing the further rollers to be forced apart.
Claim 10
Dependent Claim
31 words
An actuator mechanism according to claim 1, in which each of the rollers of the two rolleR assemblies is provided with a circumferential groove for locating and guiding the elongate member.
Claim 11
Dependent Claim
20 words
An actuator mechanism according to claim 1, in which the elongate member takes the form of a rod or tube.
Claim 12
Dependent Claim
28 words
An actuator mechanism according to claim 1, comprising microswitch means operable in conjunction with the elongate member for determining the longitudinal position thereof relative to said actuator mechanism.
References Cited (Backward Citations)
US1224046A
Cited
US3462058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |