US3774946A - Door or panel latch assembly - Google Patents
Door or panel latch assembly Download PDFInfo
- Publication number
- US3774946A US3774946A US00185297A US3774946DA US3774946A US 3774946 A US3774946 A US 3774946A US 00185297 A US00185297 A US 00185297A US 3774946D A US3774946D A US 3774946DA US 3774946 A US3774946 A US 3774946A
- Authority
- US
- United States
- Prior art keywords
- panel
- latch
- shaft
- threaded shaft
- latch member
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B17/00—Accessories in connection with locks
- E05B17/0025—Devices for forcing the wing firmly against its seat or to initiate the opening of the wing
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B65/00—Locks or fastenings for special use
- E05B65/006—Locks or fastenings for special use for covers or panels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/0886—Sliding and swinging
- Y10T292/0887—Operating means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/20—Clamps
- Y10T292/221—Screw and nut
Definitions
- a rotary operated latch assembly having a latch member mounted on a threaded shaft for axial movement along the shaft and pivotal movement about the shaft, the latch assembly being mounted onto a panel member whereby rotation of the threaded shaft results in the latch member moving toward or away from the panel member engaging or disengaging with a door or panel frame during said movement,
- the present invention relates to a door latch assembly of the type which is adaptable for mounting along the edges of a door or panel member which overlaps a wall or frame wherein the latching member is swingable over the inside frame of the door or panel opening to lock the panel against the frame.
- the present invention is particularly concerned with a latch assembly having a latch member mounted on a threaded shaft for axial movement along the shaft and pivotal movement about the shaft, the latch member being provided with stop means to cooperate with pivotal movement of the latch member for engaging and disengaging relationships with a coextensive panel member, such as a door frame.
- Door latch assemblies adaptable for mounting along the edges of a door member which overlap walls or frames are well known in the art. Several of these assemblies are designed for the latching member to be swingable over the inside wall or frame. However, these assemblies have been found complex in construction and erection, requiring elaborate installation arrangements on door or panel members.
- a panel or door latch assembly for latching overlapping coextensive panels, the latch assembly being mounted along the edges of one of the panels. It is further recognized that it is desirable to provide a latch assembly for use with a panel that fits outside a panel frame, the assembly having a latch member swingable over the inside of the frame. Also, it is recognized that it is desirable to have door latch assemblies which are economical and easily constructed for use in fluid treating equipment, particularly air filtration equipment.
- the present invention advantageously provides a straightforward arrangement of a door latch assembly to be used in association with a door or panel closure member to give a fluid tight seal between the edge of a door or panel member and a door or panel frame in a housing.
- the present invention provides a latch assembly for latching the overlapping edges of first and second coextensive panels
- a bracket having a base portion and two leg portions, the bracket being fixedly attached to the first panel; a threaded shaft adapted to project in a freely rotatable manner through aligned apertures in the first panel and at least one of the legs of the bracket; a latch member having an internally threaded aperture therein adaptable for mounting onto the threaded shaft for axial movement along the shaft member and pivotal movement about the axis of the shaft'member, the latch member being adaptable for engaging relationship with the second panel, the second panel having edges coextensive with the edges of the first panel; and resilient means communicating with the latch and adaptable for exerting sufficient tension on the latch to provide pivotal movement of the latch in the direction of rotation of the shaft.
- FIG. 1 is a perspective view ilustrating the closure of an opening in an air handling unit using a plurality of door latch assemblies of the present invention
- FIG. 2 is an enlarged cross-sectional view of a door latch assembly taken along the plane through 2-2 of FIG. 1;
- FIG. 3 is an enlarged exploded perspective illustration of a door latch assembly of the present invention.
- a panel member 1 is provided for covering an opening in wall 2 of an air cleaning equipment housing 10 utilizing a plurality of door latch assemblies 3.
- the door latch assemblies 3, hereinafter described, are provided at selected locations along the edges of panel member 1 for latching panel member 1 to the coextensive panel member or panel frame 5 of wall 2.
- FIGS. 2 and 3 there is illustrated one door latch assembly 3 mounted on a panel member 1 to permit the latch to engage with a panel frame 5.
- Latch assembly 3 is attached to panel member 1 by means of fasteners, such as rivets 4.
- the latch assembly 3 includes a U-shaped bracket 7, screw 6, a coil spring 8, a latch member 9, a nut 11, and a pin 12.
- U-shaped bracket 7 is provided with a pair of spaced apertures 18 in leg 24 for receiving fasteners 4 for attaching the bracket 7 to the panel member 1.
- Bracket 7 is further provided with unthreaded intermediate aperture 13 in leg 24 and unthreaded aperture 14 in opposed leg 26, the apertures 13 and 14 being in axial alignment for receiving screw 6 therethrough, screw 6 being freely rotatable in apertures 13 and 14.
- Screw 6 has an enlarged non-threaded center parted head 22 of a diameter sufficient to prevent movement of head 22 through an axially aligned aperture (not shown) in panel memberl. Screw 6 is further provided with a threaded shaft portion 21 of a diameter adaptable for passing through the aperture (not shown) in panel member 1 and aligned apertures 13 and 14.
- Latch member 9 a polyhedron having opposed spaced parallel surfaces of trapezoidal configuration, is provided with an internally threaded aperture 16, a first contact surface 29, and a second surface 30 including a contact edge 31.
- Aperture 16 is adapted to receive shaft 21 in threaded engagement therewith for axial movement of latch member 9 thereon.
- the second surface 30 including contact edge 311, contact surface 31 being the transversely extending edge connecting the apexes of the trapezoidal surfaces, is adapted to move angularly toward the base 28 upon axial movement of latch member 9 toward frame 5, latch member 9 being adaptable for pivotal movement with one face thereof engaging with extremity of right angle lip 27 of frame 5.
- the first contact surface 29, contact surface 29 being one of the surfaces opposite the contact edge 31 is adapted to move angularly toward the base 28 upon axial movement of latch member 9 along shaft 21 away from panel frame 5. Furthermore, trapezoidal configured latch member 9 is sized so that when surface 29 is in contact with base 28 the latch member 9 is in nonlatching position, but when edge 31 is in contact with base 28 the latch member 9 is in latching position.
- Coil spring 8 through which screw 6 passes is adaptable for positioning between and communicating with leg 24 of U-shaped bracket 7 and the latch member 9.
- Spring 8 is further adapted for exerting sufficient tension on latch member 9 to provide pivotal movement of latch member 9 in the direction of the rotation of the shaft 21.
- Screw engaged with the threaded shaft 21 is a castle or hex nut 1 1.
- a through aperture 17 is provided at the extremity of threaded shaft 21 transverse of the shaft 21 for receiving pin 12.
- Pin 12 is of a preselected length greater than the distance through the aperture 17 and is provided to limit axial movement of the nut 11 upon rotation of threaded shaft 21.
- U-shaped bracket 7 is attached to the panel member 1 by fasteners 4, the fasteners 4 being inserted through spaced apertures 18 in the leg 24 of U-shaped bracket 7.
- Screw 6 is inserted through washer 23, an aperture (not shown) in panel member 1, and aperture 13 in leg 24 of U-shaped bracket 7, the aperture 13 being in axial alignment with the aperture (not shown) in panel member 1 and adapted for receiving screw 6 for freely rotatable movement therein.
- Coil spring 8 being adapted to be received by the threaded shaft 21 of screw six, is placed onto threaded shaft 21.
- Latch member 9, having an aperture 16 therein with internal threads for receiving shaft 21 in threaded engagement therethrough is positioned for receiving the threaded shaft 21 upon rotating shaft 21.
- threading of latch member 9 and shaft 21 is preselected for combination with a preselected trapezoidal shape of latch member 9 so that when the shaft 21 is rotated for axial movement of latch member 9 along shaft 21 toward lip 27, latch member 9 moves pivotally in a direction so that edge 31 contacts base 28 and when the shaft 21 is rotated for axial movement of latch member 9 away from lip 27, latch member 9 moves pivotally in a direction so that surface 29 contacts base 28.
- the threaded shaft 21 is passed through the aperture 16 a preselected distance past latch member 9. Shaft 21 is passed through non-threaded aperture 14 of the leg 26 of U-shaped bracket 7, aperture 14 being adapted for receiving shaft 21 for freely rotatable movement therein. Nut 11 is screw engaged with the threaded shaft 21 and the nut l 1 is rotated on the threaded shaft 21 until it is properly aligned with aperture 17. Pin 12 is then inserted through aperture 17 to hold the nut 11 on the threaded shaft 21.
- screw 6 In sealing an opening in a wall, screw 6 is rotated with latch member 9 moving axially along shaft 21 until latch member 9 contacts lip 27 and pivotally until the edge 31 is in communication with the base 28 of U- shaped bracket 7.
- a gasket 19 is provided on the outside of wall 2 for fluid tight sealing between panel member 1 and wall 2 when latch member 9 is drawn tight against lip 27 of frame 5.
- the means for limiting axial movement of the threaded shaft 21 is the center-parted head 22 of screw 6 at one end and nut 11 in communicative relation with leg 26 at the other.
- other means may be used for limitation of axial movement of shaft 21.
- a latch assembly for latching the overlapping edges of first and second coextensive panels comprising a U-shaped bracket having a base portion and two leg portions, said bracket having one leg fixedly attached to said first panel; a threaded shaft projecting in a freely rotatable manner through aligned apertures in said first panel and said legs of said bracket; a latch member having an internaly threaded aperture therein mounted onto said threaded shaft for axial movement along said shaft and pivotal movement about the axis of said shaft member, said latch member being adaptable for engaging with a second panel, said second panel, said second panel having edges coextensive with the edges of said first panel; and resilient means directly communicating with said latch member and adaptable for exerting sufficient tension on said latch member to provide pivotal movement of said latch member in the direction of rotation of said shaft, said latch member being a polyhedron having opposed spaced parallel surfaces of trapezoidal configuration with a transversely extending contact edge connecting the apexes of said trapezoidal surfaces, said polyhedron further having
- the latch assembly of claim 1 including means limiting said threaded shaft in its axial movement through said first panel.
- the means limiting said threaded shaft in its movement through said first panel includes a nut and a pin at the end of said threaded shaft opposite the end extending through said panel, said nut being screw engaged with said threaded shaft, said pin being inserted transversely through said threaded shaft and aligned with said nut preventing axial movement of said nut upon rotational movement of said threaded shaft; and an enlarged nonthreaded head at the end of said threaded shaft extending through said first panel, said head being of a diameter sufficient to prevent movement through said aperture in said first panel.
- latch member assembly of claim 1 said latch being of trapezoidal configuration and adapted to be in a non-latching position when said first contact surface is in contact with said base and a latching position when said contact edge of said second surface is in contact with said base.
- latch member assembly of claim 1 said latch being adapted for pivotal movement of said second surface including said contact edge toward said base when said shaft is rotated for axial movement of said latch in the direction toward said base when said shaft is rotated for axial movement of said latch in the direction away from said second panel.
Landscapes
- Hinges (AREA)
Abstract
Description
Claims (7)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18529771A | 1971-09-30 | 1971-09-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3774946A true US3774946A (en) | 1973-11-27 |
Family
ID=22680406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00185297A Expired - Lifetime US3774946A (en) | 1971-09-30 | 1971-09-30 | Door or panel latch assembly |
Country Status (1)
Country | Link |
---|---|
US (1) | US3774946A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4070048A (en) * | 1976-07-06 | 1978-01-24 | Philip Young | Releasable window guard |
US4707021A (en) * | 1986-11-04 | 1987-11-17 | Deere & Company | Enclosure panel for tractor |
US5226716A (en) * | 1991-08-09 | 1993-07-13 | Gould Inc. | Locking device for electronic module |
FR2715428A1 (en) * | 1994-01-27 | 1995-07-28 | Mecelec Ind | Safety lock for electricity, gas telephone or water control boxes |
US20080203736A1 (en) * | 2004-12-17 | 2008-08-28 | Dieter Ramsauer | Lock With A Turning And Drawing Bolt |
US8048186B2 (en) | 2009-04-02 | 2011-11-01 | General Electric Company | Filter retention systems and devices |
US8105409B2 (en) | 2009-01-30 | 2012-01-31 | General Electric Company | Filter retention system |
US10119469B2 (en) | 2016-09-15 | 2018-11-06 | General Electric Company | Method and apparatus for modularized inlet silencer baffles |
US10385778B2 (en) | 2017-01-06 | 2019-08-20 | General Electric Company | System and method for an improved inlet silencer baffle |
US10550766B2 (en) | 2017-01-06 | 2020-02-04 | General Electric Company | System and method for an improved inlet silencer baffle |
US10722990B2 (en) | 2016-09-15 | 2020-07-28 | General Electric Company | Method for installing and removing modularized silencer baffles |
US20200291689A1 (en) * | 2019-03-12 | 2020-09-17 | Wistron Corporation | Lock mechanism and holding structure for electronic device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB189714803A (en) * | 1897-06-18 | 1897-07-24 | Benjamin Williams | Improvements in Fasteners for Windows. |
US1826817A (en) * | 1929-01-30 | 1931-10-13 | Crouse Hinds Co | Fastener for boxes |
FR862487A (en) * | 1939-08-29 | 1941-03-07 | Funke August | Locking device improvements |
GB906388A (en) * | 1960-07-23 | 1962-09-19 | Bertram Thomas Engineers Ltd | Improvements in devices for securing doors in the closed position |
US3360910A (en) * | 1966-05-31 | 1968-01-02 | Envirco Inc | Filter framing system |
-
1971
- 1971-09-30 US US00185297A patent/US3774946A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB189714803A (en) * | 1897-06-18 | 1897-07-24 | Benjamin Williams | Improvements in Fasteners for Windows. |
US1826817A (en) * | 1929-01-30 | 1931-10-13 | Crouse Hinds Co | Fastener for boxes |
FR862487A (en) * | 1939-08-29 | 1941-03-07 | Funke August | Locking device improvements |
GB906388A (en) * | 1960-07-23 | 1962-09-19 | Bertram Thomas Engineers Ltd | Improvements in devices for securing doors in the closed position |
US3360910A (en) * | 1966-05-31 | 1968-01-02 | Envirco Inc | Filter framing system |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4070048A (en) * | 1976-07-06 | 1978-01-24 | Philip Young | Releasable window guard |
US4707021A (en) * | 1986-11-04 | 1987-11-17 | Deere & Company | Enclosure panel for tractor |
US5226716A (en) * | 1991-08-09 | 1993-07-13 | Gould Inc. | Locking device for electronic module |
FR2715428A1 (en) * | 1994-01-27 | 1995-07-28 | Mecelec Ind | Safety lock for electricity, gas telephone or water control boxes |
US20080203736A1 (en) * | 2004-12-17 | 2008-08-28 | Dieter Ramsauer | Lock With A Turning And Drawing Bolt |
US8191941B2 (en) * | 2004-12-17 | 2012-06-05 | Dieter Ramsauer | Lock with a turning and drawing bolt |
US8105409B2 (en) | 2009-01-30 | 2012-01-31 | General Electric Company | Filter retention system |
US8048186B2 (en) | 2009-04-02 | 2011-11-01 | General Electric Company | Filter retention systems and devices |
US10119469B2 (en) | 2016-09-15 | 2018-11-06 | General Electric Company | Method and apparatus for modularized inlet silencer baffles |
US10722990B2 (en) | 2016-09-15 | 2020-07-28 | General Electric Company | Method for installing and removing modularized silencer baffles |
US10385778B2 (en) | 2017-01-06 | 2019-08-20 | General Electric Company | System and method for an improved inlet silencer baffle |
US10550766B2 (en) | 2017-01-06 | 2020-02-04 | General Electric Company | System and method for an improved inlet silencer baffle |
US20200291689A1 (en) * | 2019-03-12 | 2020-09-17 | Wistron Corporation | Lock mechanism and holding structure for electronic device |
US11879272B2 (en) * | 2019-03-12 | 2024-01-23 | Wistron Corporation | Lock mechanism and holding structure for electronic device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CITICORP NORTH AMERICA, INC., NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:SNYDERGENERAL CORPORATION, A MN CORP.;REEL/FRAME:005013/0592 Effective date: 19881117 |
|
AS | Assignment |
Owner name: ALLIS-CHALMERS CORPORATION, 1126 S. 70TH STR., W. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN AIR FILTER COMPANY, INC.;REEL/FRAME:005063/0240 Effective date: 19881117 Owner name: SNYDERGENERAL CORPORATION, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ALLIS-CHALMERS CORPORATION;REEL/FRAME:005091/0514 Effective date: 19881117 |
|
AS | Assignment |
Owner name: SNYDERGENERAL CORPORATION A CORP. OF DELAWARE Free format text: RELEASE BY SECOND PARTY OF A SECURITY AGREEMENT RECORDED AT REEL 5013 FRAME 592.;ASSIGNOR:CITICORP NORTH AMERICA, INC. A CORP. OF DELAWARE;REEL/FRAME:006104/0270 Effective date: 19920326 |