US3857299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control mechanisms for gear boxes
Assignee: Turner Manufacturing Co Ltd
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Filing: 1973-03-01
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Granted: 1974-12-31
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Expires: 1993-03-01
Abstract
Abstract A control mechanism for a gear box comprises a body in which is mounted a control rod which can be moved axially as well as angularly by means of an external control lever, the control rod carrying an actuating member arranged to engage with one of a number of independently movable plates arranged transversely of the length of the control rod axial movement of the rod between successive positions aligning the actuating member with respective ones of said plates and angular movement of the rod causing the actuating member to produce linear movement of the plate aligned therewith and the plates being connected to operating elements arranged to engage gear ratios selector devices in the associated gear box.
Inventors
- 👤 W Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:13
CPC Classifications
F; F16; F16H; F16H63/00; F16H63/02; F16H63/30; F16H63/08; F16H63/20; F16H2063/202; F16H2063/3076; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20085; Y10T74/20122
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
207 words
A control mechanism for a gear box comprising a body, a control rod in the body and connectible to an external control lever, the control rod carrying an actuating member and being movable angularly as well as axially in the body, the body containing a number of independently movable plates which are arranged transversely of the length of the control rod, axial movement of the rod between successive positions serving to align the actuating member with respective plates, and angular movement of the rod causing the actuating member to produce linear movement of a plate which is aligned therewith, said plates having respective operating elements arranged to engage gear ratio selector devices in the gear box, said plates being identical and each of which is symmetrical about a first plane containing the axis of the control rod and containing the center of a shaped hole through which the control rod passes, each of said plates having pairs of tongues arranged to engage gear ratio selector devices, said tongues being disposed symmetrically on a respective plate at opposite sides of said first plane, said control rod having portions which are alternatively engageable with a recess formed in the periphery of said hole through which said control rod passes.
Claim 2
Dependent Claim
207 words
A control mechanism for a gear box comprising a body, a control rod in the body and connectible to an external control lever, the control rod carrying an actuating member and being movable angularly as well as axially in the body, the body containing a number of independently movable plates which are arranged transversely of the length of the control rod, axial movement of the rod between successive positions serving to align the actuating member with respective plates, and angular movement of the rod causing the actuating member to produce linear movement of a plate which is aligned therewith, said plates having respective operating elements arranged to engage gear ratio selector devices in the gear box, said plates being identical and each of which is symmetrical about a first plane containing the axis of the control rod and containing the center of a shaped hole through which the control rod passes, each of said plates having pairs of tongues arranged to engage gear ratio selector devices, said tongues being disposed symmetrically on a respective plate at opposite sides of said first plane, said control rod having portions which are alternatively engageable with a recess formed in the periphery of said hole through which said control rod passes.
Claim 3
Dependent Claim
30 words
A control mechanism as claimed in claim 1, in which the plates are mounted in parallel with one another and are perpendicular to the longitudinal axis of the control rod.
Claim 4
Dependent Claim
75 words
A control mechanism as claimed in claim 1 in which each of the plates is also symmetrical about a second plane perpendicular to said first plane, except for the shaped hole for the control rod and each plate has four sets of elements engageable with a member on the body whereby movement of the plate away from a selected position is resisted, orientation of the plate determining which of the four sets is so engageable.
Claim 5
Dependent Claim
32 words
A control mechAnism as claimed in claim 3, in which the sets of elements are respective sets of notches engageable by a spring loaded detent carried in the body of the mechanism.
Claim 6
Dependent Claim
24 words
A control mechanism as claimed in claim 1 wherein the control rod has means whereby linear movement is always restricted to a single plate.
Claim 7
Dependent Claim
48 words
A control mechanism as claimed in claim 5, in which the means for restricting linear movement to a single plate comprises interengaging formations on the control rod and plates whereby angular movement of the control rod produces no movement of any of the plates but said single plate.
Claim 8
Dependent Claim
27 words
A control mechanism as claimed in claim 1 wherein the control rod is moved by a control lever engaged in a cranked portion of the control rod.
Claim 9
Dependent Claim
24 words
A control mechanism as claimed in claim 7, which the control rod is adaptable for alternative types of engagement means with the control lever.
Claim 10
Dependent Claim
24 words
A control mechanism as claimed in claim 1 in which the control rod is urged by spring means in at least one axial direction.
Claim 11
Dependent Claim
43 words
A control mechanism as claimed in claim 9, in which the spring means comprises two springs of which, over a portion of the travel of the control rod, only one is operatively stressed and over a further portion both springs are operatively stressed.
Claim 12
Dependent Claim
24 words
A control mechanism as claimed in claim 1 in which the control rod actuates an electrical switch at a predetermined position in its travel.
Claim 13
Dependent Claim
20 words
A control mechanism as claimed in claim 11, in which axial movement of the control rod actuates the electrical switch.
Claim 14
Dependent Claim
23 words
A control mechanism as claimed in claim 11, in which axial or angular movement of the control rod can actuate the electrical switch.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |