DE4326313A1 - Method and arrangement for the electrical release of mechanically stored power for unlocking - Google Patents

Method and arrangement for the electrical release of mechanically stored power for unlocking

Info

Publication number
DE4326313A1
DE4326313A1 DE4326313A DE4326313A DE4326313A1 DE 4326313 A1 DE4326313 A1 DE 4326313A1 DE 4326313 A DE4326313 A DE 4326313A DE 4326313 A DE4326313 A DE 4326313A DE 4326313 A1 DE4326313 A1 DE 4326313A1
Authority
DE
Germany
Prior art keywords
electrical
unlocking
arrangement according
further characterized
release
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE4326313A
Other languages
German (de)
Inventor
Rolf Neusel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE4326313A priority Critical patent/DE4326313A1/en
Publication of DE4326313A1 publication Critical patent/DE4326313A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B77/00—Vehicle locks characterised by special functions or purposes
    • E05B77/02—Vehicle locks characterised by special functions or purposes for accident situations
    • E05B77/12—Automatic locking or unlocking at the moment of collision
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B65/00—Locks or fastenings for special use
    • E05B65/10—Locks or fastenings for special use for panic or emergency doors
    • E05B65/104—Locks or fastenings for special use for panic or emergency doors actuated in response to heat, e.g. with fusible element, bimetal, memory shape or swelling material
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G15/00—Mechanical devices for initiating a movement automatically due to a specific cause

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Lock And Its Accessories (AREA)

Abstract

The object of the invention is the mechanical unlocking, for example, of door locks on motor vehicles following the end of an accident. For this purpose, the necessary mechanical energy is obtained by means of the release of a pre-tensioned spring. Release is carried out as a result of severing a fusible point by means of a short electrical fusing current surge, which is taken from an electrical store. Vibration sensor, retriggerable switching electronics, store and reverse flow diode can be assigned individually to each fusing point and thus to each door lock, since these parts are of small construction and are cheap. As a result, in the case of failure of the on-board power supply, caused by an accident, each door lock can be unlocked independently of the others. This is only possible since only very short-term low electrical energy is needed for the fusion process, while the energy released in the pre-tensioned spring effects the mechanical unlocking actuation.

Description

BekanntesKnown

Zur Entriegelung insbesondere von Fahrzeugtüren im Falle eines Unfallgeschehens sind mehrere Verfahren und Anordnungen bekannt geworden, denen jedoch meist erhebliche Nachteile anhaften. Die wesentlichsten Nachteile sind vorzeitige Entriegelung noch während des Bewegungsablaufs, Versagen der Entriegelung wegen Bordnetzausfall und unbegründete Entriegelung durch Erschütterungen, die nicht durch Unfall verursacht sind.For unlocking vehicle doors in particular In the event of an accident, there are several procedures and orders have become known to those usually have considerable disadvantages. The The main disadvantages are premature unlocking still during the course of movement, failure of the Unlocking due to electrical system failure and unfounded Unlocked by shocks that are not by Accident.

ErfindungsgedankeInvention idea

Die Entriegelung muß für jede Tür einzeln und mit jeder Tür zugeordnetem System erfolgen, ohne daß der Ausfall des elektrischen Bordnetzes den Ent­ riegelungsvorgang stören kann. Die Entriegelung darf nicht schon während des unfallbedingten Bewegungs­ ablaufs erfolgen, sondern erst nach Eintritt der endgültigen Ruhelage.The release must be done individually and with each door system assigned to each door without the failure of the electrical system on board the Ent locking process can interfere. The release must not already be during the accident-related movement process, but only after the final rest position.

Die Erfindung benennt dazu folgende Bestandteile und Funktionen:To this end, the invention names the following components and functions:

Die mechanische Entriegelung muß mit Mitteln erfolgen, die zufolge ihrer Einfachheit das Minimum an Stör­ anfälligkeit sowohl aus zeitbedingten Einflüssen, wie etwa Korrosion, wie aus unfallbedingten Gründen verwirklichen. Dazu ist vorgesehen, eine mechanische Feder derart zu spannen, daß die in ihr gespeicherte Leistung ausreicht, einen wie auch immer gearteten Riegel zu lösen, wenn die Arretierung der gespannten Feder elektrisch freigegeben wird. Die einfachste vorgesehen Bewirkung der Freigabe ist mittels einer Sollschmelzstelle vorgesehen. Die Feder wird in der gespannten Lage gehalten durch eine Schmelzstelle, die derart ausgelegt ist, daß der kurzzeitige aber starke Entladestrom eines elektrischen Speichers das Abschmelzen und damit einfachst die Freigabe bewirkt. Als elektrischer Speicher ist - je nach Aufwandsrahmen und angestrebter Lebensdauer - ein chemischer Kondensator, ein nichtchemischer Konden­ sator oder eine aufladbare Anordnung von Zellen bekannter Art vorgesehen. Wegen optimaler Konstanz ist ein MP Kondensator zu bevorzugen.The mechanical unlocking must be done by means which due to their simplicity, the minimum of sturgeon vulnerability from both time-related influences, such as corrosion, such as for accident reasons realize. For this purpose, a mechanical Tension the spring so that the stored in it Performance is sufficient, any type Release latch when locking the cocked Spring is released electrically. The easiest The intended effect of the release is by means of a Target melting point provided. The spring is in the tense position held by a melting point, which is designed so that the short-term strong discharge current of an electrical storage the melting and thus simply the release causes. As electrical storage is - depending on  Expense framework and desired lifespan - a chemical condenser, a non-chemical condenser sator or a rechargeable array of cells known type provided. Because of optimal constancy an MP capacitor is preferable.

Für die elektrische Freigabe der Feder ist auch die Anwendung einer durch den Entladestromstoß betätigende Sperrklinke vorgesehen. Dabei sind jedoch mehrere, der Sollschmelzstelle nicht anhaftende Fehler­ quellen unvermeidbar, so zum Beispiel Klemmen, Korrosion, Verkleben, Verbiegen.For the electrical release of the spring is also the Application of an actuating by the discharge current surge Pawl provided. However, there are several defects not adhering to the target melting point swell inevitable, for example clamps, Corrosion, sticking, bending.

Da die Entriegelung nicht vorzeitig erfolgen darf, ist eine elektrische Anordnung vorgesehen, die erst um einige Sekunden nach Ende des unfallbedingten Bewegungsablaufs das Entriegelungssignal liefert. Dazu ist eine sogenannte rücktriggerbare elektri­ sche Anordnung vorgesehen, die bewirkt, daß beispielsweise mehrere innerhalb der vorgesehenen Verzögerungszeit aufeinander folgende Stöße jeweils den Neubeginn der Verzögerungszeit bewirken und damit die Abgabe des Entriegelungssignals solange verhindern, bis kein weiterer Stoß mehr erfolgt ist. Damit ist sichergestellt, daß nicht während des Unfallablaufs, mag er auch über längere Zeit erfolgen, entriegelt werden kann. Der elektrische Speicher liefert so lange den Betriebsstrom für diese elektrische Anordnung. Damit ist die Unabhängigkeit vom Bordnetzausfall gegeben.Since the release must not take place prematurely, an electrical arrangement is provided, the first by a few seconds after the end of the accident Movement sequence provides the unlock signal. This is a so-called retriggerable electri cal arrangement provided that causes for example several within the intended Delay time of successive impacts each cause the delay time to restart and thus the release of the unlock signal as long prevent until there is no further impact is. This ensures that not during of the course of the accident, he likes it for a long time can be unlocked. The electric one Storage supplies the operating current for this electrical arrangement. So that's it Independence from electrical system failure.

Die Zusammenfassung der beschriebenen Bauteile auch mit je einem Sensor in eine geschlossene Baugruppe ist wegen der hohen Funktionssicherheit vorgesehen. Jede mit einer solchen kompakten Baugruppe zur Entriegelung gesicherte Tür funktioniert so unabhängig von möglicher Systemzerstörung an anderer Tür oder zentraler Stelle. The summary of the described components also with one sensor each in a closed assembly is intended because of the high level of functional reliability. Each with such a compact assembly Unlocking secured door works like this regardless of possible system destruction on others Door or central location.  

Die für die Erfindung benannten Bauteile sind im Stand der Technik so allgemein bekannt, daß eine detaillierte Darstellung für den einschlägig gebildeten Fachmann nicht erforderlich ist. Da auch bereits eine Vielzahl von sogenannten Crash-Sensoren bekannt ist, deren Prinzipien vom räumlich kleinen Piezokeramik­ element bis zum einfachen Kugelkontakt reichen, ist der Sensor nicht Gegenstand der Erfindung.The components named for the invention are in State of the art so well known that a detailed illustration for the relevant educated Expert is not required. Since already one A large number of so-called crash sensors are known their principles of spatially small piezoceramic element to simple ball contact, the sensor is not the subject of the invention.

Bei der Vielzahl der bekannten Verriegelungssysteme erfaßt die Erfindung lediglich die Bereitstellung der mechanischen Energie zur Entriegelung in der einfachen und störungssicheren Ausführung.With the multitude of known locking systems the invention only covers the provision the mechanical energy for unlocking in the simple and fail-safe design.

Da es aus mehreren Gründen günstig sein kann, den Speicherkondensator mit einer höheren als der Bord­ netzspannung aufzuladen, ist die Anwendung von elektronischer Spannungsverdoppelung sowie die Integration derselben in der Baugruppe vorgesehen. Dies ist - ganz besonders im Hinblick auf EMV - elektromagnetische Verträglichkeit - als Anspruch bedeutend.Because it can be cheap for several reasons Storage capacitor with a higher than the board charging the mains voltage is the application of electronic voltage doubling as well Integration of the same is provided in the assembly. This is - especially with regard to EMC - electromagnetic compatibility - as a requirement significant.

Claims (6)

1. Verfahren und Anordnung zur elektrischen Freigabe mechanisch gespeicherter Leistung, enthaltend einen Sensor und ein elektrisches System zur Verarbeitung und Verzögerung, dadurch gekenn­ zeichnet, daß die Leistung einer mechanisch vor­ gespannten Feder durch das Schmelzen einer Soll­ schmelzstelle freigegeben wird und die Entriegelung betätigt.1. The method and arrangement for the electrical release of mechanically stored power, comprising a sensor and an electrical system for processing and delay, characterized in that the power of a mechanically pre-tensioned spring is released by melting a desired melting point and actuates the unlocking. 2. Verfahren und Anordnung nach Anspruch 1 weiterhin dadurch gekennzeichnet, daß ein elektrischer Speicher, ein Kondensator oder eine aufladbare Zelle, über eine Rückflußdiode aus dem Bordnetz aufgeladen wird, daß die gespeicherte elektrische Energie das elektrische System und die Verzögerung speist und das Schmelzen der Sollschmelzstelle bewirkt, und daß diese gespeicherte elektrische Energie auch bei Ausfall des Bordnetzes mit Sicher­ heit ausreichend dimensioniert ist.2. The method and arrangement according to claim 1 further characterized in that an electrical Memory, a capacitor or a rechargeable Cell, via a reflux diode from the vehicle electrical system is charged that the stored electrical Energy the electrical system and the delay feeds and the melting of the target melting point causes, and that this stored electrical Safe energy even if the on-board electrical system fails dimensioned sufficiently. 3. Verfahren und Anordnung nach vorgehenden Ansprüchen, weiterhin dadurch gekennzeichnet, daß die Leistung der mechanisch vorgespannten Feder vom kurzzeitigen Entladestromstoß des elektrischen Speichers mittels einer elektromagnetisch betätigten Klinke freigegeben wird.3. Method and arrangement according to the preceding claims, further characterized in that the performance the mechanically preloaded spring from the short-term Discharge current surge of the electrical storage means released an electromagnetically operated jack becomes. 4. Verfahren und Anordnung nach vorgehenden Ansprüchen, weiterhin dadurch gekennzeichnet, daß damit vorzugs­ weise die Entriegelung von Kraftfahrzeugtüren im Schadensfalle ausgeführt wird. 4. Method and arrangement according to the preceding claims, further characterized in that preferred as the unlocking of motor vehicle doors in Damage trap is executed.   5. Verfahren und Anordnung nach vorgehenden Ansprüchen, weiterhin dadurch gekennzeichnet, daß Spannungs­ verdoppler vorgesehen sind, die den elektrischen Speicher auf eine höhere Spannung als die Bord­ netzspannung aufladen und daß die elektrischen und elektronischen Bauteile mit dieser höheren Spannung betrieben werden.5. The method and arrangement according to the preceding claims, further characterized in that voltage doublers are provided, the electrical Store on a higher voltage than the board charge mains voltage and that the electrical and electronic components with this higher Voltage operated. 6. Verfahren und Anordnung nach vorgehenden Ansprüchen, weiterhin dadurch gekennzeichnet, daß die Soll­ schmelzstelle durch einen Draht gebildet ist, der einerseits an der gespannten Feder und andererseits an einer isolierten Klemme befestigt ist, und der aus einer Reserverolle nötigenfalles nach einem zufälligen Schmelzen und Entriegeln nachgezogen und verklemmt wird.6. The method and arrangement according to the preceding claims, further characterized in that the target melting point is formed by a wire, the one hand on the tensioned spring and on the other hand attached to an insulated clamp is, and if necessary from a reserve role after a random melting and unlocking is tightened and jammed.
DE4326313A 1993-08-05 1993-08-05 Method and arrangement for the electrical release of mechanically stored power for unlocking Withdrawn DE4326313A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4326313A DE4326313A1 (en) 1993-08-05 1993-08-05 Method and arrangement for the electrical release of mechanically stored power for unlocking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4326313A DE4326313A1 (en) 1993-08-05 1993-08-05 Method and arrangement for the electrical release of mechanically stored power for unlocking

Publications (1)

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DE4326313A1 true DE4326313A1 (en) 1995-02-09

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Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19611578A1 (en) * 1996-03-23 1997-09-25 Bayerische Motoren Werke Ag Electric window raising circuit arrangement with mechanical child-protection system for rear-door windows
WO1998038422A1 (en) 1997-02-28 1998-09-03 Filterwerk Mann+Hummel Gmbh Process and device for altering an opening
DE19725416C1 (en) * 1997-06-17 1999-01-21 Huf Huelsbeck & Fuerst Gmbh Rotary latch lock, in particular for motor vehicles
DE19745689A1 (en) * 1997-10-16 1999-04-22 Bayerische Motoren Werke Ag Device in vehicles with functional elements in group and bus systems for current consumers
US7617752B2 (en) 2000-09-29 2009-11-17 Sd3, Llc Contact detection system for power equipment
US7640837B2 (en) 2000-08-14 2010-01-05 Sd3, Llc Table saw with improved safety system
US7640835B2 (en) 2000-08-14 2010-01-05 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US7644645B2 (en) 2002-01-16 2010-01-12 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US7661343B2 (en) 1999-10-01 2010-02-16 Sd3, Llc Brake mechanism for power equipment
US7681479B2 (en) 2000-08-14 2010-03-23 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US7707920B2 (en) 2003-12-31 2010-05-04 Sd3, Llc Table saws with safety systems
US7712403B2 (en) 2001-07-03 2010-05-11 Sd3, Llc Actuators for use in fast-acting safety systems
US7784507B2 (en) 2000-09-29 2010-08-31 Sd3, Llc Router with improved safety system
US7789002B2 (en) 2000-09-29 2010-09-07 Sd3, Llc Table saw with improved safety system
US7827890B2 (en) 2004-01-29 2010-11-09 Sd3, Llc Table saws with safety systems and systems to mount and index attachments
US7832314B2 (en) 2000-08-14 2010-11-16 Sd3, Llc Brake positioning system
US7836804B2 (en) 2003-08-20 2010-11-23 Sd3, Llc Woodworking machines with overmolded arbors
US7845258B2 (en) 2003-08-20 2010-12-07 Sd3, Llc Brake cartridges for power equipment
US7895927B2 (en) 1999-10-01 2011-03-01 Sd3, Llc Power equipment with detection and reaction systems
US7900541B2 (en) 2001-11-13 2011-03-08 Sd3, Llc Detection system for power equipment
US7921754B2 (en) 2000-08-14 2011-04-12 Sd3, Llc Logic control for fast-acting safety system
US7991503B2 (en) 2003-12-31 2011-08-02 Sd3, Llc Detection systems for power equipment
US8011279B2 (en) 2000-08-14 2011-09-06 Sd3, Llc Power equipment with systems to mitigate or prevent injury
US8061245B2 (en) 2000-09-29 2011-11-22 Sd3, Llc Safety methods for use in power equipment
US8065943B2 (en) 2000-09-18 2011-11-29 Sd3, Llc Translation stop for use in power equipment
US8100039B2 (en) 2000-08-14 2012-01-24 Sd3, Llc Miter saw with safety system
US8413559B2 (en) 2000-08-14 2013-04-09 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US8459157B2 (en) 2003-12-31 2013-06-11 Sd3, Llc Brake cartridges and mounting systems for brake cartridges
US8640583B2 (en) 2003-05-13 2014-02-04 Robert Bosch Gmbh Safety detection and protection system for power tools
US9724840B2 (en) 1999-10-01 2017-08-08 Sd3, Llc Safety systems for power equipment
US9927796B2 (en) 2001-05-17 2018-03-27 Sawstop Holding Llc Band saw with improved safety system
US11098849B2 (en) 2016-05-31 2021-08-24 Sawstop Holding Llc Detection systems for power tools with active injury mitigation technology
US20220074235A1 (en) * 2020-09-05 2022-03-10 Ryan Joongi Cho Automatic door opening device using thermal expansion of shape memory alloy

Cited By (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19611578A1 (en) * 1996-03-23 1997-09-25 Bayerische Motoren Werke Ag Electric window raising circuit arrangement with mechanical child-protection system for rear-door windows
DE19611578B4 (en) * 1996-03-23 2008-03-06 Bayerische Motoren Werke Ag Circuit arrangement for windows of vehicles
WO1998038422A1 (en) 1997-02-28 1998-09-03 Filterwerk Mann+Hummel Gmbh Process and device for altering an opening
DE19708212A1 (en) * 1997-02-28 1998-09-03 Mann & Hummel Filter Method and arrangement for changing an opening
DE19725416C1 (en) * 1997-06-17 1999-01-21 Huf Huelsbeck & Fuerst Gmbh Rotary latch lock, in particular for motor vehicles
DE19745689A1 (en) * 1997-10-16 1999-04-22 Bayerische Motoren Werke Ag Device in vehicles with functional elements in group and bus systems for current consumers
US8408106B2 (en) 1999-10-01 2013-04-02 Sd3, Llc Method of operating power equipment with detection and reaction systems
US7895927B2 (en) 1999-10-01 2011-03-01 Sd3, Llc Power equipment with detection and reaction systems
US8196499B2 (en) 1999-10-01 2012-06-12 Sd3, Llc Power equipment with detection and reaction systems
US9969014B2 (en) 1999-10-01 2018-05-15 Sawstop Holding Llc Power equipment with detection and reaction systems
US7661343B2 (en) 1999-10-01 2010-02-16 Sd3, Llc Brake mechanism for power equipment
US8291797B2 (en) 1999-10-01 2012-10-23 Sd3, Llc Table saw with improved safety system
US9925683B2 (en) 1999-10-01 2018-03-27 Sawstop Holding Llc Table saws
US9724840B2 (en) 1999-10-01 2017-08-08 Sd3, Llc Safety systems for power equipment
US9522476B2 (en) 1999-10-01 2016-12-20 Sd3, Llc Power equipment with detection and reaction systems
US10335972B2 (en) 1999-10-01 2019-07-02 Sawstop Holding Llc Table Saws
US7788999B2 (en) 1999-10-01 2010-09-07 Sd3, Llc Brake mechanism for power equipment
US7832314B2 (en) 2000-08-14 2010-11-16 Sd3, Llc Brake positioning system
US7681479B2 (en) 2000-08-14 2010-03-23 Sd3, Llc Motion detecting system for use in a safety system for power equipment
US7640837B2 (en) 2000-08-14 2010-01-05 Sd3, Llc Table saw with improved safety system
US8490527B2 (en) 2000-08-14 2013-07-23 Sd3, Llc Power equipment with systems to mitigate or prevent injury
US8438958B2 (en) 2000-08-14 2013-05-14 Sd3, Llc Detection system for power equipment
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US9038515B2 (en) 2000-08-14 2015-05-26 Sd3, Llc Logic control for fast-acting safety system
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US8522655B2 (en) 2000-08-14 2013-09-03 Sd3, Llc Logic control for fast-acting safety system
US8006595B2 (en) 2000-08-14 2011-08-30 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US8011279B2 (en) 2000-08-14 2011-09-06 Sd3, Llc Power equipment with systems to mitigate or prevent injury
US7640835B2 (en) 2000-08-14 2010-01-05 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US8100039B2 (en) 2000-08-14 2012-01-24 Sd3, Llc Miter saw with safety system
US8079292B2 (en) 2000-08-14 2011-12-20 Sd3, Llc Detection system for power equipment
US8191450B2 (en) 2000-08-14 2012-06-05 Sd3, Llc Power equipment with detection and reaction systems
US8065943B2 (en) 2000-09-18 2011-11-29 Sd3, Llc Translation stop for use in power equipment
US7789002B2 (en) 2000-09-29 2010-09-07 Sd3, Llc Table saw with improved safety system
US8186255B2 (en) 2000-09-29 2012-05-29 Sd3, Llc Contact detection system for power equipment
US7617752B2 (en) 2000-09-29 2009-11-17 Sd3, Llc Contact detection system for power equipment
US8061245B2 (en) 2000-09-29 2011-11-22 Sd3, Llc Safety methods for use in power equipment
US7784507B2 (en) 2000-09-29 2010-08-31 Sd3, Llc Router with improved safety system
US9927796B2 (en) 2001-05-17 2018-03-27 Sawstop Holding Llc Band saw with improved safety system
US7712403B2 (en) 2001-07-03 2010-05-11 Sd3, Llc Actuators for use in fast-acting safety systems
US7900541B2 (en) 2001-11-13 2011-03-08 Sd3, Llc Detection system for power equipment
US7644645B2 (en) 2002-01-16 2010-01-12 Sd3, Llc Apparatus and method for detecting dangerous conditions in power equipment
US8640583B2 (en) 2003-05-13 2014-02-04 Robert Bosch Gmbh Safety detection and protection system for power tools
US9702504B2 (en) 2003-05-13 2017-07-11 Robert Bosch Tool Corporation Safety detection and protection system for power tools
US7845258B2 (en) 2003-08-20 2010-12-07 Sd3, Llc Brake cartridges for power equipment
US7836804B2 (en) 2003-08-20 2010-11-23 Sd3, Llc Woodworking machines with overmolded arbors
US8122807B2 (en) 2003-12-31 2012-02-28 Sd3, Llc Table saws with safety systems
US8489223B2 (en) 2003-12-31 2013-07-16 Sd3, Llc Detection systems for power equipment
US7866239B2 (en) 2003-12-31 2011-01-11 Sd3, Llc Elevation mechanism for table saws
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US9623498B2 (en) 2003-12-31 2017-04-18 Sd3, Llc Table saws
US8459157B2 (en) 2003-12-31 2013-06-11 Sd3, Llc Brake cartridges and mounting systems for brake cartridges
US7991503B2 (en) 2003-12-31 2011-08-02 Sd3, Llc Detection systems for power equipment
US8087438B2 (en) 2003-12-31 2012-01-03 Sd3, Llc Detection systems for power equipment
US8498732B2 (en) 2003-12-31 2013-07-30 Sd3, Llc Detection systems for power equipment
US7827890B2 (en) 2004-01-29 2010-11-09 Sd3, Llc Table saws with safety systems and systems to mount and index attachments
US10052786B2 (en) 2004-01-29 2018-08-21 Sawstop Holding Llc Table saws with safety systems and systems to mount and index attachments
US8505424B2 (en) 2004-01-29 2013-08-13 Sd3, Llc Table saws with safety systems and systems to mount and index attachments
US10882207B2 (en) 2004-01-29 2021-01-05 Sawstop Holding Llc Table saws with safety systems and systems to mount and index attachments
US11098849B2 (en) 2016-05-31 2021-08-24 Sawstop Holding Llc Detection systems for power tools with active injury mitigation technology
US11940095B2 (en) 2016-05-31 2024-03-26 Sawstop Holding Llc Detection systems for power tools with active injury mitigation technology
US20220074235A1 (en) * 2020-09-05 2022-03-10 Ryan Joongi Cho Automatic door opening device using thermal expansion of shape memory alloy

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