Saab Automobile AB

About: Saab Automobile AB is a based out in . It is known for research contribution in the topics: Radar & Signal. The organization has 760 authors who have published 890 publications receiving 11811 citations.

Quiet check valve for pulsating flow.

Abstract: A check valve (4) with spherical, spring-loaded valve head (25) is used for pulsating flows, especially in a fuel injection system for Otto engines. As a result of low flow resistance, such check valves have had a tendency to cause noise when the valve head (25) strikes down against the valve seat (11) during pulsating of the flow caused by selective opening of the fuel injection nozzles. The valve head (25) is designed with a flange (7) downstream of the valve seat (11), and this flange (7) interacts with a narrow boring (13) during the first part of the opening stroke. Consequently, a secondary throttling (12) is formed, in addition to the primary throttling between the valve head (25) and the valve seat (11), which contributes to the valve head being forced away at a distance from the valve seat. During the movement of the valve head towards the seat, the flange first comes down into the boring (13), as a result of which the continued movement of the valve head towards the seat is damped by the volume of fluid which lies between flange (7) and seat (11), as a result of which noise is prevented from occurring.

Communications unit for fitting in vehicles.

Abstract: A communications unit with a telephone receiver (1) is intended for fitting in a standardized recess (3) for radio equipment in vehicles. The communications unit permits a fitting in which the telephone receiver (1) in a first user position lies sunk and protected in the recess (3). By means of an automatic or manually initiated ejection, the telephone receiver (1) is caused to take up a second user position in which the receiver (1) is given another orientation and a more advanced position relative to the recess (3). In this second position the telephone receiver (1) can be picked up from a telephone receiver holder (20) for manual handling. The invention permits a safer handling of the telephone while driving, and without obstructing the accessibility to other vehicle controls in the vicinity of the recess (3) when the telephone receiver (1) is in its first user position.

Occupational dermatoses in a Swedish aircraft plant.

Abstract: A survey of occupational dermatoses, based on a questionnaire, clinical examination and patch testing, was carried out among 341 workers in an aircraft plant. The questionnaire was answered by 330 workers (96.8%). Present or previous skin disease was reported by 92 employees, who were all subjected to physical examination and patch testing. Patch testing was conducted with a standard series, as well as with a series of substances and products representing the work environment. Occupational contact allergies were established in 12 employees. In total, the figure for occupational skin diseases was 16.1% (55 workers), when calculated for all employees.