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Patent No. 6637447

Beerbrella

A small umbrella which may be removably attached to a beverage container in order to shade the beverage container from the direct rays of the sun.

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Class 74/424.85 - Roller return path in shaft


Subclass of Class 74 - Machine element or mechanism
Definition: Subject matter in which a portion of the closed loop path
No. of patents: 12
Last issue date: 03/04/2008


NumberTitleIssue Date
7337883Linear electromechanical screw actuator for a parking brake
The actuator comprises a tubular nut (22) coupled by means of an external thread (21) to the casing (12) of the actuator. The nut has an internal thread (23) opposite the external thread, for engaging a threaded rod (11) which is p...
03/04/2008
7305902Ball screw device
A ball screw device comprises a screw shaft, a nut externally mounted on the screw shaft, and a multiplicity of balls interposed between thread grooves of the screw shaft and the nut. The screw shaft has a ball circulation groove for coupling downstream and upstream...
12/11/2007
7249533Ball screw device
A ball screw device comprises a nut having a thread groove in the inner peripheral surface thereof, a screw shaft having a thread groove in the outer peripheral surface thereof and a plurality of balls interposed between the respective thread grooves. In the screw s...
07/31/2007
7121379Steering unit for an electric vehicle
A steering unit of an electric vehicle is equipped with an electric motor having a tubular output shaft, through which a steering rod is assembled connected to the same output shaft by means of a recirculating ball screw-nut screw coupling so as to control the steer...
10/17/2006
7062987Ball bearing and a continuously variable speed transmission of belt type
A ball screw in a continuously variable speed transmission has an axially immovable pulley half (2) and axially movable pulley half (3) both mounted on a rotary shaft (4). The axially movable pulley half (3) is moved by a ball screw (2...
06/20/2006
6898994Ball nut and screw assembly
A ballscrew and ball nut assembly with complimentary threads providing a ball raceway having a ball re-circulation path within the screwshaft of the ballscrew provided on the peripheral surface of a screwshaft insert and including end passages which communicate with...
05/31/2005
6538455Coupling for a reflectivity-measuring device
A coupling for a reflectivity-measuring device connects a first shaft of a reflectivity-measuring device with a second shaft of a motor. The first shaft inserts into a first hole of a main portion of the coupling, and the second shaft inserts into a secon...
03/25/2003
6202498Screw with recirculating ball arrangement
An axial displacement arrangement in the form of a ball screw and nut achieves a highly compact configuration by effecting ball recirculation entirely within the ball screw shaft. The ball recirculation portion of the ball screw shaft is axially short wit...
03/20/2001
5899114Differential ball screw and nut assembly and method of obtaining relative linear motion differentially
A differential ball screw and nut assembly has an axially and rotatably fixed nut with an internal helical groove having a first lead to cooperate with a tubular ball screw having an external helical groove with a corresponding lead to provide a first rac...
05/04/1999
4366723Recirculating-ball drive
A recirculating-ball drive has a ball nut centered on an axis and formed with an internal helical groove and receiving a spindle centered on the axis also and rotatable in the nut about the axis. This spindle is formed with an external helical groove of s...
01/04/1983
4258584Ball circulation screw gear
A worm gear is provided having a rotary worm screw which drives a reciprocal ball nut by means of a ball chain with coacting helical channeling effecting a raceway between the worm screw and ball nut. The invention resides in providing a ball return membe...
03/31/1981
 
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