US4040509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Autonomous group for mechanical control of machines
Assignee: Individual
•
Filing: 1975-11-24
•
Granted: 1977-08-09
•
Expires: 1995-11-24
Abstract
Abstract Motor rotated cams each actuate a lever and each lever is connected by a flexible non-extensible member, cable or chain, to the element of the machine to be controlled. A spring loaded bell crank lever is provided for each flexible non-extensible member and the non-extensible member passes over a pulley mounted at one end of an arm of the bell crank lever. Each arm of the bell crank lever actuates an electric switch connected to a motor whereby if the tension in the flexible non-extensible member increases or decreases excessively the appropriate one of the switches is opened to stop the motor.
Inventors
- 👤 Jean Leon Missioux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:18
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/225; F; F16; F16H; F16H25/00; F16H25/08; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18288
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
177 words
Transmission group for mechanical control of machines comprising an independent assembly including at least one rotating shaft, at least two cams removably mounted on said shaft, a pivoted lever engaging each of said cams, a non-extensible flexible member connected to each of said levers and to the machine to be controlled outside of the group, said non-extensible flexible members transmitting the cyclical movement of said cams to the machines to be controlled, security means reacting to variations of tension in said non-extensible flexible members to stop the control group upon occurrence of an excessible variation of tension in said non-extensible flexible members between said levers and the machines to be controlled, a housing for the independent transmission group, a driving motor in said housing rotating said shaft, a base for the transmission group, said housing including at least two walls removably mounted on said base and disposed opposite each other and two vertical spaced parallel plates within said walls and secured to said base, said two vertical walls supporting said shaft, said shaft extending across said base.
Claim 2
Dependent Claim
177 words
Transmission group for mechanical control of machines comprising an independent assembly including at least one rotating shaft, at least two cams removably mounted on said shaft, a pivoted lever engaging each of said cams, a non-extensible flexible member connected to each of said levers and to the machine to be controlled outside of the group, said non-extensible flexible members transmitting the cyclical movement of said cams to the machines to be controlled, security means reacting to variations of tension in said non-extensible flexible members to stop the control group upon occurrence of an excessible variation of tension in said non-extensible flexible members between said levers and the machines to be controlled, a housing for the independent transmission group, a driving motor in said housing rotating said shaft, a base for the transmission group, said housing including at least two walls removably mounted on said base and disposed opposite each other and two vertical spaced parallel plates within said walls and secured to said base, said two vertical walls supporting said shaft, said shaft extending across said base.
Claim 3
Dependent Claim
24 words
A transmission group as described in claim 1, said cams being secured to said shaft by keys and nuts and adjacent said vertical plates.
Claim 4
Dependent Claim
28 words
A transmission group as described in claim 1, including a driving sprocket on said shaft between said vertical plates and driving means connecting said pinion to said motor.
Claim 5
Dependent Claim
52 words
Transmission group as described in claim 1, each of said levers including two vertical spaced plates independently pivoted on a horizontal axis and mounted adjacent an upper part of said vertical plates and cam followers mounted between said vertical plates and at the level of said shaft for engagement by said cams.
Claim 6
Dependent Claim
18 words
A transmission group as described in claim 1, including spring means applying tension to said non-extensible flexible members.
Claim 7
Dependent Claim
138 words
A transmission group as described in claim 1, said security means including for each of said non-extensible flexible members a bell crank lever, a first and a second arm for said bell crank lever, a pulley mounted for rotation at an end of the first of said arms, said non-extensible flexible member passing over said pulley, said first bell crank arm supporting said pulley rotating against a spring, a first electric switch actuated by said first bell crank arm upon the occurrence of a loss of tension in said non-extensible flexible member to open said switch, said second of said bell crank arms acting against a spring, a second electric switch for said second bell crank arm, said second bell crank arm opening said second electric switch upon the occurrence of excessive tension in said non-extensible flexible member.
Claim 8
Dependent Claim
26 words
A transmission group as described in claim 1, including a plurality of said shafts and driving means between said motor and said plurality of said shafts.
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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) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |