Patent US1808542A successfully refreshed from Google Patents.
Patent JPS6433254A successfully refreshed from Google Patents.
US3885448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control lever and linkage system
Assignee: Caterpillar Inc
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Filing: 1974-03-11
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Granted: 1975-05-27
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Expires: 1994-03-11
Abstract
Abstract There is disclosed a control lever and linkage system comprising a control lever operatively connected by means of a flexible wire to a remotely positioned control element. The control lever comprises a rotatable shaft mounted in the sidewall of an enclosed housing and having a first arm externally of the housing for manipulation by an operator and a second arm internally of the housing operatively connected to the end of the control wire. The opposite end of the control wire extends into a second remotely positioned housing and is therein connected to a control element to be actuated.
Inventors
- 👤 Duane E Beals
- 👤 William W Blake
- 👤 Paul C Rosenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:01
CPC Classifications
G; G05; G05G; G05G7/00; G05G7/02; G05G7/10; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20402; Y10T74/2042; Y10T74/20528
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
154 words
A sealed control lever and linkage system comprising in combination: at least one manually manipulatable control lever; at least one remotely located movable control element; linkage means including an enclosed flexible cable comprising an outer guide sleeve and an inner flexible wire element slidably mounted within said sleeve for connecting said control lever to said remotely located control element; a first housing sealingly enclosing one end of said cable and one end of said control lever, said lever including a shaft rotatably journaled in one wall of said housing and having a first arm secured to said shaft externally of said housing for manual manipulation and a second arm secured to said shaft internally of said housing and detachably secured to one end of said flexible wire element; and a second housing sealingly enclosing the other end of said cable and the connection of said flexible wire element to said remotely located control element.
Claim 2
Dependent Claim
154 words
A sealed control lever and linkage system comprising in combination: at least one manually manipulatable control lever; at least one remotely located movable control element; linkage means including an enclosed flexible cable comprising an outer guide sleeve and an inner flexible wire element slidably mounted within said sleeve for connecting said control lever to said remotely located control element; a first housing sealingly enclosing one end of said cable and one end of said control lever, said lever including a shaft rotatably journaled in one wall of said housing and having a first arm secured to said shaft externally of said housing for manual manipulation and a second arm secured to said shaft internally of said housing and detachably secured to one end of said flexible wire element; and a second housing sealingly enclosing the other end of said cable and the connection of said flexible wire element to said remotely located control element.
Claim 3
Dependent Claim
103 words
The control lever and linkage system of claim 1 wherein: said remotely located control element includes a lever for transferring motion of said flexible wire element to the outside of said second housing for connection to another control element, said lever comprising a shaft rotatably journaled in said second housing and having a first arm secured to one end of said shaft inside said housing and a second arm secured to the other end of said shaft outside said housing, so that the sole function of said second housing is for sealing said other end of said cable against dust and the like.
Claim 4
Dependent Claim
103 words
The control lever and linkage system of claim 1 including a sealed third housing, and wherein said second housing comprises a tubular member detachably secured to the end of said outer guide sleeve and telescopically received in a bore in said third housing and detachably secured thereto; and detachable connecting means for connecting said flexible wire to said remotely located control element within said tubular member so that said detachable connecting means is sealed against dust and the like within said second housing and is accessible for disconnecting when said second housing is detached and removed from said bore of said third housing.
Claim 5
Dependent Claim
28 words
The control system of claim 1 wherein said control element is a slidable element and the connection of the wire thereto is within a said second sealed housing.
Claim 6
Dependent Claim
22 words
The control system of claim 4 comprising a tubular member connecting said guide sleeve to said second housing supporting said control element.
Claim 7
Dependent Claim
19 words
The control system of claim 2 comprising a plurality of control levers, said levers including co-axially disposed rotatable shafTs.
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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |