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Class Information
Number: 74/89.23
Name: Machine element or mechanism > Mechanical movements > Reciprocating or oscillating to or from alternating rotary > Including screw and nut
Description: Subject matter including mechanical movement comprising a rotatable element having spiral threads or grooves encircling its axis of rotation and a second element enmeshed therewith for relative movement along the axis.
Sub-classes under this class:
| Class Number |
Class Name |
Patents |
| 74/89.26 |
Alternate power path operable on failure of primary |
22 |
| 74/89.25 |
Auxiliary drive (e.g., fluid piston, etc.) for load |
40 |
| 74/89.42 |
Backlash |
99 |
| 74/89.33 |
Carriage surrounded, guided, and primarily supported by member other than screw (e.g., linear guide, etc.) |
92 |
| 74/89.32 |
Carriage surrounding, guided by, and primarily supported by member other than screw (e.g., linear guide, etc.) |
106 |
| 74/89.4 |
Contamination related |
51 |
| 74/89.36 |
Deflection related |
80 |
| 74/89.38 |
Including means to selectively transmit power (e.g., clutch, etc.) |
99 |
| 74/89.37 |
Limit stop |
114 |
| 74/89.44 |
Lubrication |
45 |
| 74/89.45 |
Manually driven |
73 |
| 74/89.39 |
Means to selectively lock or retard screw or nut |
66 |
| 74/89.29 |
Plural inputs, single output |
37 |
| 74/89.35 |
Plural screws in series (e.g., telescoping, etc.) |
56 |
| 74/89.43 |
Pressurized fluid introduced between nut and screw |
11 |
| 74/89.34 |
Shaft moves through rotary drive means |
68 |
| 74/89.24 |
Shaft shorter than nut |
18 |
| 74/89.27 |
Single input split into two intermediate outputs that are subsequently superposed into a single output |
9 |
| 74/89.28 |
Single input, plural outputs |
59 |
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7592769 |
Electric cylinder |
Sep. 22, 2009 |
| 7584677 |
Trailer jack lock |
Sep. 8, 2009 |
| 7584678 |
Power transmission method and device having load sensing thrust augmentation mechanism |
Sep. 8, 2009 |
| 7578211 |
Leadscrew drive with annular-shell leadscrew |
Aug. 25, 2009 |
| 7578212 |
Force amplifier |
Aug. 25, 2009 |
| RE40870 |
Adjusting element device |
Aug. 18, 2009 |
| 7562594 |
Electric actuator capable of converting rotational motion to a linear motion |
Jul. 21, 2009 |
| 7562595 |
Dust proof sliding device |
Jul. 21, 2009 |
| 7533590 |
Screwing and rolling head for the application of pre-threaded caps |
May. 19, 2009 |
| 7530280 |
Micro actuator |
May. 12, 2009 |
| 7488110 |
End-plate for linear motion slider and linear motion slider in use with the end-plate |
Feb. 10, 2009 |
| 7481126 |
Precision table |
Jan. 27, 2009 |
| 7444894 |
Linear actuator with wear-resistant ceramic bushing |
Nov. 4, 2008 |
| 7424833 |
Telescopically moving structure |
Sep. 16, 2008 |
| 7406890 |
Steering controller of vehicle |
Aug. 5, 2008 |
| 7404468 |
Elevator having second driving device |
Jul. 29, 2008 |
| 7396007 |
Positioning device for a rotationally displaceable positioning element |
Jul. 8, 2008 |
| 7389974 |
Screw, nut and cable transmission |
Jun. 24, 2008 |
| 7383800 |
Assembly for actuating apparatus |
Jun. 10, 2008 |
| 7357048 |
Ball screw drive |
Apr. 15, 2008 |
| 7353723 |
Use of an electrified pin to detect load transfer to a secondary nut in a screw actuator |
Apr. 8, 2008 |
| 7350432 |
Gearbox comprising an electromechanical actuator |
Apr. 1, 2008 |
| 7329199 |
In-line actuator apparatus and method |
Feb. 12, 2008 |
| 7303180 |
Valve actuator with split thrust bearing |
Dec. 4, 2007 |
| 7298108 |
Control system for electric actuator |
Nov. 20, 2007 |
| 7284458 |
Adjusting element device |
Oct. 23, 2007 |
| 7281443 |
Manual control device |
Oct. 16, 2007 |
| 7278331 |
Drive nut with structural extrusion drive area for vehicle seat adjuster |
Oct. 9, 2007 |
| 7201073 |
Angle adjusting device |
Apr. 10, 2007 |
| 7195384 |
Adjusting device for head light system |
Mar. 27, 2007 |
| 7189176 |
Motor-driven steering apparatus |
Mar. 13, 2007 |
| 7141897 |
Electric actuator expanded with sensor and electronic brake |
Nov. 28, 2006 |
| 7135794 |
Spring support having a height-adjustable spring plate |
Nov. 14, 2006 |
| 7127791 |
Split nut for use with a rod having dual directional screw threads about a common diameter |
Oct. 31, 2006 |
| 7100465 |
Actuator |
Sep. 5, 2006 |
| 7093510 |
Self-centering device for linear drive units |
Aug. 22, 2006 |
| 7044016 |
Ball screw |
May. 16, 2006 |
| 7040056 |
Gear shaft assembly |
May. 9, 2006 |
| 7024957 |
Lead screw for linear actuator, and method of manufacturing the same |
Apr. 11, 2006 |
| 7021001 |
Anti-pinch power window system |
Apr. 4, 2006 |
| 7004043 |
Elevated support pole with automatic electrical connection and disconnection |
Feb. 28, 2006 |
| 7000493 |
Screw device having lubricant applying portion |
Feb. 21, 2006 |
| 6983667 |
Impact micro-positioning actuator |
Jan. 10, 2006 |
| 6968752 |
Drive shaft moving device |
Nov. 29, 2005 |
| 6959620 |
Device for balancing of a radial threaded spindle eccentricity of a spindle drive |
Nov. 1, 2005 |
| 6949842 |
Centrifugal weight control for a wind or water turbine |
Sep. 27, 2005 |
| 6931955 |
Seal for ball screw and ball screw utilizing same |
Aug. 23, 2005 |
| 6932204 |
Power transmission device for a four-wheel drive vehicle |
Aug. 23, 2005 |
| 6927513 |
Electromechanical screw drive actuator |
Aug. 9, 2005 |
| 6916169 |
Drive apparatus for injection molding machine |
Jul. 12, 2005 |
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