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Patent No. 6718554

Hands free towel carrying system

A hands free towel carrying system for coupling a towel to a user to prevent loss, theft or contamination.

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Class 92/113 - Relatively movable elongated part within stem


Subclass of Class 92 - Expansible chamber devices
Definition: Apparatus including an elongated member which is movable
No. of patents: 44
Last issue date: 04/19/2011


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NumberTitleIssue Date
7926412Retractable assembly for analytical measurements technology
A retractable assembly, comprising: an assembly housing; a linear drive in the assembly housing; and a tubular holder), movably guided between a measuring position and a service position by means of the linear drive, for fluid-sealed reception of a sensor, with whic...
04/19/2011
7395749Pneumatic cylinder
A pneumatic cylinder having a cushioning valve assembly. A tubular body is capped by a pair of cylinder heads. A hollow cylinder rod having a piston assembly and cushioning valve assembly is seated within the tubular body for reciprocating action therein. The piston...
07/08/2008
7243593Loader assembly, combination motor vehicle and loader assembly, hydraulic cylinders and methods for operating a loader assembly
Hydraulic cylinders that are ported at one end are disclose. ...
07/17/2007
7234386Three chamber hydraulic cylinder for an active vehicle suspension with integrated load leveling
A hydraulic actuator for an active of semi-active vehicle suspension system has a cylinder with a piston therein. A piston rod is attached to the piston and extends out of the cylinder. First and second chambers are formed on opposites sides of the piston enabling t...
06/26/2007
7197975Piston-cylinder unit
Piston-cylinder unit including a working cylinder; a piston attached to a piston rod and installed with freedom of axial displacement in the working cylinder; and fastening elements, at least one of which is screwed into a threaded bore in the piston rod, where the ...
04/03/2007
6948417Fluid cylinder with swivel joint
A fluid cylinder with a swivel joint which is more improved with high utility is provided. To this end, in the fluid cylinder, a flow passage (R2b) leading to a chamber (1F) at the rod side of the cylinder is provided inside a rod (3), an...
09/27/2005
6131502Cavity jacket for plunger piston
A device for inhibiting glass from falling into an annular cavity formed between a plunger piston and an inner piston telescopically journalled within a longitudinal cavity within the plunger piston includes a rigid sleeve mountable to the plunger piston,...
10/17/2000
6041690Pneumatic control unit for at least partial opening of a movable body part of a motor vehicle
A pneumatic drive unit is provided for partially opening a vehicle body part such as a trunk lid. The pneumatic drive unit includes a working chamber which in use applies pressure to move a control member which engages a contact surface of the vehicle bod...
03/28/2000
5477771Hydraulic cylinder assembly
A LDT dry well consisting of a stainless steel tube closed at one end and welded to an adapter piece on the opposite end is attached is threaded into the rear of the cylinder and the stainless steel well extends into the cylinder. Inside the tube, the LDT...
12/26/1995
5325763Internal check valve
An internal check valve for use in a linear hydraulic motor in the form of a piston-cylinder unit including a cylinder body (38) reciprocally slidable on a piston component (40). The piston component (40) includes a tubular piston rod (52) and a piston he...
07/05/1994
5322004Telescoping fluid actuator
A telescoping fluid actuator assembly including a housing having a plurality of concentrically disposed fluid actuators disposed therein. Each fluid actuator includes a cylindrical housing enclosing a piston and piston rod. Fluid passage means is provided...
06/21/1994
5301598Piston-cylinder unit for producing and transmitting compressive forces
A piston-cylinder unit for producing and transmitting compressive forces onto adjusting elements which are guided so as to be slidable on a straight line. The piston-cylinder unit includes a push rod mounted so as to be capable of oscillating transversely...
04/12/1994
5205200Hydraulic booster device for linear actuator
A linear actuator used in moving, for example, gate valves, sluice gates and the like, wherein an increased thrust is required during initial movement. The present invention includes, as part of the linear actuator, a novel booster piston movably disposed...
04/27/1993
5038669RAM piston with internal reservoir and check valve
A double-cylinder construction which can be used not only in large-sized compression molding machines but also in small-sized or medium-sized compression molding machines. In the double-cylinder construction of the present invention, a ram slidably fitted...
08/13/1991
5038672Hydraulic rotary actuating apparatus
The apparatus includes a steeped axially displaceable piston in a stepped cylinder housing, and a rotary shaft is axial fixed relative to the housing and extends into the piston reduced diameter end portion. The piston reduced diameter portion and the hou...
08/13/1991
5036752Hydraulic actuator having fail-safe feature with energy absorbing sleeve
Hydraulic actuator comprises a piston-cylinder which has a fail-safe feature in the form of a lost motion coupling between the cylinder head and portions of the cylinder. The coupling comprises a constraining rod which is secured to the cylinder at the op...
08/06/1991
5014599Two piece hydraulic piston assembly with swaged piston-sleeve joint
A piston and piston support rod assembly in which the piston is formed as a sheet metal stamping. A central sleeve is attached to the end wall of the stamped piston by a swaging operation performed on an annular section of the end wall. An undercut area o...
05/14/1991
4907495Pneumatic cylinder with integral concentric hydraulic cylinder-type axially compact brake
A composite hydraulic cylinder apparatus which has a pneumatic cylinder mechanism, a braking oil hydraulic cylinder mechanism associated concentrically with the pneumatic cylinder mechanism, an oil passage for communicating between the front chamber and t...
03/13/1990
4602481Fluid actuator for binary selection of output force
The actuator (12) comprises three main parts, an outer casing (20), a movable piston (28) and a fixed piston (36). A stepped outer portion (50, 52, 54) of the movable piston (28) cooperates with a stepped cavity (40, 42, 44) in the casing (20) to define a...
07/29/1986
4522113Device for accommodating bending of a cable
A device for accommodating bending a cable or the like by remote control is proposed. It has a cylinder with a piston rod, and two holders coupled to the cylinder and the piston rod at each end thereof. The holders through which a cable runs are bent by r...
06/11/1985
4508016Rotary actuated support
A fluid-powered, rotary actuated support, including an elongated cylindrical body having ports for introducing pressurized fluid therein; a platform concentric with the cylindrical body and rotatable relative thereto; a radially extending bearing support ...
04/02/1985
4440068Hydraulic cowl door actuator with anti-vibration loading device, and assembly employing same
A single ended hydraulic actuator requiring hydraulic pressure to extend the piston for raising the cowl door of a jet engine and the like. A preload spring device carried in the piston-rod assembly produces an extend force when the actuator is retracted ...
04/03/1984
4296679Cylinder with two-stage movement, especially a welding cylinder
In a cylinder with a two-stage movement, a first piston moves in a housing, and in the first piston a second piston moves, which has a piston rod sliding in an end of the housing. On its side facing away from the piston rod, the second piston is provided ...
10/27/1981
4273063Ship stabilizer
The ship stabilizer comprises at least two retractable fins mounted on both sides of the hull of the ship, housings being formed within the hull below the floating line of the ship for engaging therein the fins in the retracted condition....
06/16/1981
4258611Vacuum motor for carburetors
A control motor of the type used to control carburetor choke valves wherein the motor has an output member acted on by a pair of springs, one of which is effective to urge the choke valve towards its closed position when the engine is not operating and th...
03/31/1981
4236442Digitally compatible servomotor
The present servomotor has a working piston in a piston cylinder. The worg piston is connected to a spindle having a relatively high pitch. The spindle is attached at one end thereof to a control disk system comprising three control disks. The two outer ...
12/02/1980
4227445Motor with multiple output members
A fluid pressure motor having a movable diaphragm assembly and an output assembly housing a plurality of output members at least some of which can move relative to the diaphragm assembly and can be connected to separate devices for control by a single dif...
10/14/1980
4218960Ram with two-part piston rod
The invention relates to a ram comprising a piston rod in two parts mounted for relative rotation. A first part extends out of the cylinder, beyond each of the heads, while the second part extends out of the cylinder only beyond one head, namely the upper...
08/26/1980
4119017Non-rotatable fluid power cylinder
A fluid power cylinder comprising a cylinder barrel, a guide rod received within the cylinder barrel and a piston slidably received within the cylinder barrel over the guide rod for rectilinear movement, means for slidably keying the piston to the guide r...
10/10/1978
4116112Fluidic amplifier
Fluidic amplifier, particularly a hydraulic linear amplifier for converting a low-energy rotary movement of a control member into a linear setting movement of the piston rod of an operating piston, wherein: the control member is connected with a threaded ...
09/26/1978
4075929Three stage thrusting device
A telescopic fluid ram or thruster utilizing pressurized gas and having an inner and outer piston that slides within a cylindrical bore including a central probe which is tapered and extends into the bore of the inner piston where it will cause the inner ...
02/28/1978
4050359Hydraulic power trim and power tilt system supply
A hydraulic system for a combined power trim and shock absorbing piston-cylinder unit of an outboard motor includes a reversible pump means having a trim-up port connected by a pressure responsive pilot valve piston cylinder units and a trim-down port thr...
09/27/1977
4036111Device for discontinuing and automatically restoring the operational function of a spring brake actuator
A manual disconnecting device is provided for disengaging the brake push rod in a spring brake actuator having a movable piston holding the spring compressed by fluid pressure during normal operation. The device once manually disconnected is automatically...
07/19/1977
4019426Hand brake for a brake cylinder
A hand brake for manually actuating brake cylinders, particularly for an air braking system on railway vehicles, has a piston tube extending from the piston of a brake cylinder and an actuating rod connected to the brake linkage positioned within the pist...
04/26/1977
4005641Apparatus for rotating and displacing in axial direction a machine element
An apparatus for selectively moving, for instance alternately or simultaneously rotating and displacing in axial direction, a machine element mounted to be rotatable and axially displaceable, comprising a motor, a hollow cylinder and a piston displaceable...
02/01/1977
3994205Device for discontinuing and automatically restoring the operational function of a spring brake actuator
An actuator for a spring brake used for parking and emergency has a spring operating on the brake push rod which will apply braking unless fluid pressure in the braking system applied to a piston overcomes spring pressure. To disable the spring brake the ...
11/30/1976
3989223Rotary motion failsafe gate valve actuator
An hydraulically operated failsafe valve actuator for use on non-rising valve stems, particularly in a subsea environment. A rotatable shaft is connected to the non-rising valve stem. In one embodiment the valve is actuated to open by a fluid pressure ope...
11/02/1976
3986438Hydraulic cylinder with integral feedback cylinder
A double-acting hydraulic cylinder includes a hollow cylinder body with a closed end and an end with a first rod opening. A first hollow piston and rod assembly, having a second rod opening at the piston end, projects through the first rod opening and sli...
10/19/1976
3977304Spring-loaded brake cylinder for a railway vehicle brake
A spring-loaded brake cylinder has a piston therein one side of which is loaded by a spring and the other side of which is subjected to a pressure medium introduced into the cylinder. The cylinder is provided with an auxiliary release device comprising a ...
08/31/1976
3977305Operating mechanism for turning an axle end
An operating mechanism for turning a butterfly valve axle or similar device has a piston/cylinder unit of which the piston is coupled to the axle and is provided with screw-thread means producing rotation of the axle as the piston is reciprocated in the c...
08/31/1976
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