192 clutches and power-stop control – Clutches – Automatic
Patent
1998-10-15
2000-08-01
Marmor, Charles A
192 clutches and power-stop control
Clutches
Automatic
192 842, 192 843, F16D 334
Patent
active
060953004
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Technical Field
The invention relates to a device for the operation of an instrument, for example an axle.
2. State of Art
Different blocking bearings for the operation of an axle are known. Reversible operation of axle are also known. See for example U.S. Pat. No. 1,860,492 or DE-C-349 678 indicating devices for the operation of a motor axle by means of an electro-magnetically vibrated, oscillating arm which is mounted on bearings on the axle. The axis can be reversibly operated by means of two electro-magnetically vibrating arms, and the devices comprise coupling devices in the form of elastic bands between the axle and the driving device.
SUMMARY OF THE INVENTION
The object of the present invention is to obtain a new and better driving device, which is simple and cheap and which can transmit a forwards and backwards movement of a driving part to a preferably stepwise rotary motion of an instrument using a blocking element which can be controlled to be clamped for clockwise or anti-clockwise rotation or disengagement.
The invention is mainly characterized by the arrangement of a driving part which can be moved in one of two directions within an operation range. The device is such that the driving part can be engaged to or disengaged from the instrument by means of one or more carrier elements, which are situated in one or more specially designed spaces between the driving part and the instrument. The carrier element, which can consist of a ball or a roller, can be guided to take different positions in the space, which is designed in such a way that in the disengagement position the carrier element is not in operation in relation to the driving part and the instrument, and in the engagement position the carrier element is more or less in blocking engagement with the driving part and the instrument when the driving part is moved in one direction but is disengaged when the driving part is moved in the other direction. By these means the mechanical force can be transmitted to the instrument when the driving part is moved in one direction or is disengaged, respectively, when the driving part is moved in said other direction and vice versa. In the last mentioned case, the force transmitted to the instrument decreases or stops.
According to another characteristic of the invention, the carrier element is arranged to co-operate with surfaces in the space of the driving part or the instrument to obtain the blocking engagement between them when the driving part is moved in the direction in question.
Another characteristic of the invention is that the device is designed for a reversible operation. In the space, several engagement positions are arranged which have a friction engagement, between the driving part and the instrument and which are effective in different directions. There are also guiding means to force the carrier element in one of said positions which can be changed externally.
The other characteristics appear from the accompanying claims.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described in greater detail with reference to examples of embodiments shown in the drawings.
FIG. 1 illustrates how a driving part can be engaged to or disengaged from an instrument to be operated by means of balls/rollers in different positions in a space.
FIG. 2 illustrates the driving part, the instrument and the ball/roller holder with an actuating part.
FIG. 3 illustrates a first embodiment showing how the actuating part can be angularly adjusted.
FIG. 4 illustrates a second embodiment showing how the actuating part can be angularly adjusted.
FIG. 5 illustrates a third embodiment showing how the actuating part can be angularly adjusted.
FIG. 6 illustrates a fourth embodiment showing how the actuating part can be angularly adjusted.
FIG. 7 illustrates a fifth embodiment showing how the actuating part can be angularly adjusted.
FIG. 8 illustrates an additional embodiment of the invention.
DETAILED DESCRIPTION OF THE INVENTION
In FIG. 1, a driving part 1 is shown, wh
REFERENCES:
patent: 1860492 (1932-05-01), Butler
patent: 2394085 (1946-02-01), Loughridge
patent: 2860750 (1958-11-01), Avanzati
patent: 3586143 (1971-06-01), Hutchinson
patent: 4003457 (1977-01-01), Dahlstrom
patent: 4457416 (1984-07-01), Kutzler
patent: 4881624 (1989-11-01), Ulmann
patent: 5494232 (1996-02-01), Hirano et al.
patent: 5499559 (1996-03-01), Lin
Marmor Charles A
Rodriguez Saul
Sem Drive AB
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