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EP0403787A2
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EP
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Mechanical transmission shifting mechanism
Assignee: Eaton Corp
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Filing: 1990-05-15
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Granted: —
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Expires: 2010-05-15
Abstract
Abstract An improved fluid operated (X-Y) shifting mechanism (100) is provided for shifting gears or clutches of a mechanical change gear transmission.. Mechanism (100) features a shift finger (4) that is secured to a shaft (6) that is moved in an axial (Y-Y) direction by at least one piston (12) and is pivoted in a substantially transverse (X-X) direction by at least one pistion (28), the piston (12) having a bore (10) in which an end of shaft (6) is supported and operative to rotate relative thereto to substantially lessen rotational inertia in encountered shifting in the (Y-Y) direction particularly during cold weather.
Inventors
- 👤 Paul Roland Peterson
- 👤 Robert Jay Bailey
- 👤 Lloyd Alan Waling
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 15:01
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/26; F16H61/28; F16H61/30; F16H2061/307; F16H61/2807; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19251; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19423; Y10T74/19428; Y10T74/19433; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20024
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
175 words
An improved (X-Y) shifting mechanism (100) for shifting change gears of a mechanical change gear transmission of the type having a plurality of shift rails selectively engageable by pivotal movement of a shift finger (4) that is fixedly secured to a shaft member (6) and is pivoted in a first (X-X) direction by at least one first fluid-operated piston (28) operatively connected thereto and is moved in a second axial (Y-Y) direction substantially transverse to the (X-X) direction by at least one second fluid-operated piston (12) operatively connected to the shaft member to effect the gear shift selected, said improvement characterized by said shaft member (6) operative to move the shift finger (4) in the (Y-Y) direction by having an end thereof supported in an open-ended bore (10) therein adapted to enable the shaft member to rotate relative said second piston (12) and thereby lessen rotational inertia and friction encountered in pivoting the shift finger (4) in the (X-X) direction while enabling said second piston (12) to move the shift finger in the (Y-Y) direction.
Claim 2
Dependent Claim
175 words
An improved (X-Y) shifting mechanism (100) for shifting change gears of a mechanical change gear transmission of the type having a plurality of shift rails selectively engageable by pivotal movement of a shift finger (4) that is fixedly secured to a shaft member (6) and is pivoted in a first (X-X) direction by at least one first fluid-operated piston (28) operatively connected thereto and is moved in a second axial (Y-Y) direction substantially transverse to the (X-X) direction by at least one second fluid-operated piston (12) operatively connected to the shaft member to effect the gear shift selected, said improvement characterized by said shaft member (6) operative to move the shift finger (4) in the (Y-Y) direction by having an end thereof supported in an open-ended bore (10) therein adapted to enable the shaft member to rotate relative said second piston (12) and thereby lessen rotational inertia and friction encountered in pivoting the shift finger (4) in the (X-X) direction while enabling said second piston (12) to move the shift finger in the (Y-Y) direction.
Claim 3
Dependent Claim
35 words
The mechanism of claim 1 including at least one fluid sealing member disposed between the shaft member (6) and the piston (12) surface surrounding the bore (10) in which the shaft member (6) is supported.
Claim 4
Dependent Claim
13 words
The mechanism of claim 2 wherein the sealing member is an elastomeric ring.
Claim 5
Dependent Claim
31 words
The mechanism of claim 1 having two first fluid-operated pistons (28,30) operative to cooperate with each other and pivot the shift finger (4) in the (X-X) direction according to pre-selected conditions.
Claim 6
Dependent Claim
42 words
The mechanism of claim 1 having two fluid-operated pistons (6,12) operative to cooperate with each other and move the shift finger axially in the (Y-Y) direction with one of said pistons having the bore (10) therein which the shaft member is supported.
Claim 7
Dependent Claim
12 words
A mechanical change gear transmission having the shifting mechanism of claim 4.
Claim 8
Dependent Claim
11 words
A mechanical gear transmission having the shifting mechanism of claim 1.
References Cited (Backward Citations)
No citation records indexed.
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