Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Closure checks – Pneumatic
Patent
1996-08-25
1998-11-17
Mah, Chuck
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Closure checks
Pneumatic
16 82, 292338, E05F 300
Patent
active
058360506
DESCRIPTION:
BRIEF SUMMARY
CROSS-REFERENCE TO RELATED APPLICATIONS
This is an application pursuant to 35 U.S.C. 371 of International Application PCT/DE95/01689 filed 30 Nov. 1995 published as WO96/17182 Jun. 6, 1996.
BACKGROUND OF THE INVENTION
Field of the Invention
The invention, in general, relates to an arresting device for a pivotable lid of a vehicle and more particularly, to a device selectively limiting the extent to which a vehicular door may be opened.
It is commonly known to accomplish the opening movement of a vehicle lid, such as the lid of a trunk (boot) or hood (bonnet) by means of a pneumatic pressure strut. A soon as the lid is unlatched it is pushed upwardly by the force of the pneumatic strut, until it has reached its maximum open terminal position.
A pneumatic pressure strut having a lever associated with it which is arrestable at various lengths at an arresting device is known from German patent DE 43 02 502 C.. (as well as German laid-open patent specification DE 43 06 882 A1). In the arrangements disclosed therein the piston rod of the pneumatic strut is concurrently maintained at the corresponding extended positions. The lever extends in parallel to the pneumatic strut across the entire surface of the rear hatch and is latched by a complex centrifugal element when the hatch is manually stopped during its upward pivoting movement. If it is not stopped in this manner, the hatch will pivot upwardly to the full extensible length of the pneumatic strut.
In German utility model DE 89 15 891 U, there is described a pneumatic pressure strut having a sleeve pushed over its cylinder which sleeve may releasably be arrested on the cylinder in two positions. This does not affect the length to which the piston rod may be extended.
The extension lever at one end of a pneumatic pressure strut described in German laid-open patent specification DE 40 00 862 Al allows for but one additional open pivotal position of a rear hatch.
Changing in the length of a fully extended pneumatic pressure strut is also known from German utility model DE 78 33 766 U and laid-open patent specification DE 41 07 382 A1, in which the end of a piston rod is slidable in a connecting threaded sleeve with either the piston rod or the threaded sleeve having to be rotated, and following adjustment, further rotation has to be prevented. This does not provide for a simple way of arresting in different positions.
From German patent DE 25 55 062 C3 an arresting device for the rear hatch of a vehicle is known which includes a pneumatic pressure strut, the piston of which may be arrested at different extended positions relative to the length of a cylinder, thus maintaining the rear hatch in different open positions. For this purpose, the usual piston of a common pneumatic strut has been altered in a complex manner by the addition to the piston, within the cylinder, of a force-actuated latching member, for controlling the latching. For this type of application, the use of commercially available pneumatic pressure struts at vehicle rear hatches is then no longer possible.
Changing the angular disposition of a hatch moved by a pneumatic strut by means of a telescoping tube extendible from a cylinder is known from German laid-open specification 32 25 974 A1.
OBJECT OF THE INVENTION
It is an object of the invention to make an arresting device in which a piston rod may be arrested at the cylinder by simple means and whereby an unintentional excessive pivotal opening movement of the rear hatch may be prevented.
The arresting device in accordance with the invention makes possible movement of different lengths of the piston rod of a pneumatic pressure strut for stopping a vehicle hatch, when necessary, before it has reached its maximum open angular disposition. For this purpose, a commercially available and, therefore, inexpensive pneumatic strut may be utilized. The frictional connection of an arresting member arranged on the cylinder to a complementary member movable with the piston rod leads to a simple and, therefore, economic structure which because of i
REFERENCES:
patent: 3711892 (1973-01-01), Tabor
patent: 4078779 (1978-03-01), Molders
patent: 4339843 (1982-07-01), Burnett, Jr.
patent: 4564973 (1986-01-01), Kordes
patent: 4596383 (1986-06-01), Howard
patent: 4807855 (1989-02-01), Schuitema
patent: 4925230 (1990-05-01), Shelton
patent: 5507070 (1996-04-01), Spyche et al.
patent: 5592780 (1997-01-01), Checkovich
Rumez Werner
Sumser Siegfried
Hormann Karl
Mah Chuck
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