US3827739A - Lever attachment for door latch-operating device - Google Patents

Lever attachment for door latch-operating device Download PDF

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Publication number
US3827739A
US3827739A US32564473A US3827739A US 3827739 A US3827739 A US 3827739A US 32564473 A US32564473 A US 32564473A US 3827739 A US3827739 A US 3827739A
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Prior art keywords
door
lever
attachment
clamp portion
depending
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Expired - Lifetime
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L Overholser
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Individual
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B1/00—Knobs or handles for wings; Knobs, handles, or press buttons for locks or latches on wings
    • E05B1/0053—Handles or handle attachments facilitating operation, e.g. by children or burdened persons
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S16/00—Miscellaneous hardware, e.g. bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance
    • Y10S16/30—Knob, control lever
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00—Closure fasteners
    • Y10S292/02—Auxiliary knob slip covers, guards
    • 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
    • Y10T292/82—Knobs

Definitions

  • the door latch- [52] US. Cl. 292/347, 292/DIG. 2 operating mechanism is actuated merely by app]ica [51] 111i. Cl. E056 21/00 tion of a downward pressure to the even
  • the d i [58] held of Search 292/131?" 3 comprises a lever portion, clamp portion, face portion,
  • the present invention relates generally to doors in hospitals, homes, commercial and industrial establishments and other places wherein the door latchoperating equipment is subject to certain requirements in the interest of safety and convenience of operation. More particularly, the invention relates to improvements in lever attachments for an operating assembly for such doors that are equipped with latches.
  • a principal object of thepresent invention is to provide a simple, durable and inexpensive attachment for door knobs of a range of sizes and varied contours and which provides a lever by which the knob may be readily turned merely by applying pressure to the lever.
  • the invention contemplates a simple operating lever in conjunction with an annular clamp that is readily detachably connectable to door knobs of a range of sizes and of varied contours.
  • FIG. I is a perspective view of a form of lever attachment embodying the present invention.
  • FIG. 2 is a perspective view of the embodiment of FIG. 1 taken from the opposite side thereof;
  • FIG. 3 is a sectional view showing the embodiment of FIG. I mounted on one type of door knob
  • FIG. 4 is a view, similar to FIG. 3, showing a door knob of a different contour
  • FIG. 5 is a side elevational view, similar to FIG. 2, showing a modification of the embodiment of FIGS. 1 and 2;
  • FIG. 6 is a sectional view looking in the direction of arrows 6-6 of FIG. 5.
  • lever attachment 10 comprises a lever portion 12, a clamp portion 13 and a face portion 14.
  • the attachment may be formed of materials such as metal and/or synthetic resin (plastic) by a convenient known forming process such as casting, molding and/or welding.
  • Lever portion 12 may be of any desired length, and if desired, may be slightly curved.
  • the clamp portion is an extension of lever portion 12 and defines an inner surface that is substantially cylindrical in shape.
  • the clamp portion also includes a depending portion 15 in which a drilled hold is provided to receive threaded fastening means 16 such as screw 16a and nut 16b.
  • face portion 14 may define an opening 18 to provide access to a locking device that is sometimes centrally located relative to the front face of a door knob on which lever attachment 10 may be mounted.
  • the clamp portion 13 is made slightly larger than the corresponding diameter of the largest knob on which the lever attachment may be mounted, thus providing space for the accommodation of a plastic shim 19 so as to prevent scratching or other surface damage to the surface of a door knob on which the device is mounted.
  • the provision of shims of various sizes limits the magnitude of the movement required of the clamp portion and yet permits the device to be installed on knobs of varying sizes.
  • the modified embodiment shown in FIGS. 5 and 6 is essentially like the embodiment shown in FIGS. 1 and 2.
  • the inner surface defined by clamp portion 13 is continuous except for a very small gap defined between the upper surface 15a of the depending portion which is closely spaced apart from the lower surface 12a of the lever portion, as is best shown in FIG. 5.
  • the modified embodiment includes ribs 20 interconnecting the clamp portion 13 and the depending portion and these ribs are disposed along opposite sides of the depending portion, as is shown in FIG. 6.
  • One of the sides of each of said ribs is angularly disposed relative to the other side to provide added stiffness and rigidity to the device and to simultaneously function as a wrench to prevent turning of nut 16b.
  • a shim of suitable size is inserted within the clamp portion and the clamp portion and shim is then inserted over and onto a door knob and clamped in desired position by tightening the threaded fastening means 116.
  • the construction is such that the device can be used with almost any cross-sectional shape of door knob as is indicated in FIGS. 3 and 4.
  • the face portion 14 engages the front face of the door knob and properly positions the device relative to the door knob, and effective clamping action is achieved regardless of the particular shape or contour of the knob.
  • an operator need not exert any gripping action on the door knob and the door-latch operating mechanism can be actuated merely by applying a downward pressure on the latch portion 12.
  • An actuating attachment for door knobs of differing cross-sectional shapes comprising an actuating member having a lever portion and an integral clamp portion having a cylindrical surface connected to the lever portion for releasably gripping door knobs of varied contour,

Abstract

Lever attachment for facilitating the opening of a door is releasably attached to a door knob. The door latch-operating mechanism is actuated merely by application of a downward pressure to the lever. The device comprises a lever portion, clamp portion, face portion, and a securing means for releasably connecting the attachment to door knobs of differing sizes and configurations.

Description

nited States Patent [191 Uverholser [4 Aug. 6, 1974 LEVER ATTACHMENT FOR DOOR 2,756,088 7/1956 Sutter 292/010. 2 LATCH OPERATING DEvlCE 3,385,129 5/1968 Duncan et al. 292/350 X 3,575,453 4/1971 Hohl 292/3363 [76] Inventor: Loyal M. Overholser, 781
Bnddlewood Dayton Ohm Primary Examiner-Richard E. Moore 45430 [22] Filed: Jan. 22, 1973 [57] ABSTRACT [21] App]. No.: 325,644
Lever attachment for facilitating the opening of a door is releasabiy attached to a door knob. The door latch- [52] US. Cl. 292/347, 292/DIG. 2 operating mechanism is actuated merely by app]ica [51] 111i. Cl. E056 21/00 tion of a downward pressure to the even The d i [58] held of Search 292/131?" 3 comprises a lever portion, clamp portion, face portion,
292/350 16/121 287/53 H and a securing means for releasably connecting the at- [56] e ere Cited tgfiicigsent to door knobs of differing sizes and configu- UNITED STATES PATENTS 2,733,942 2/1956 Palmer 287/53 H 1 Clam" 6 Drawmg figures PATENTEDAUB sum SHEET 1 1f 2 PAIENTED MIG 65174 sum 2 or 2 LEVER ATTACHMENT FOR DOOR LATCH-OPERATING DEVICE BACKGROUND The present invention relates generally to doors in hospitals, homes, commercial and industrial establishments and other places wherein the door latchoperating equipment is subject to certain requirements in the interest of safety and convenience of operation. More particularly, the invention relates to improvements in lever attachments for an operating assembly for such doors that are equipped with latches.
The opening of a door in an establishment of the type referred to above ordinarily requires a turning of the door knob by a twist of the hand. Such manipulation is difficult or impossible by a person whose hands are carrying objects or are otherwise occupied. The same is true of persons suffering from common ailments such as arthritis, as well as persons who are partially paralyzed as well as other handicapped persons, especially amputees who may be unable to open such a door without assistance.
Accordingly, a principal object of thepresent invention is to provide a simple, durable and inexpensive attachment for door knobs of a range of sizes and varied contours and which provides a lever by which the knob may be readily turned merely by applying pressure to the lever.
SUMMARY In general, the invention contemplates a simple operating lever in conjunction with an annular clamp that is readily detachably connectable to door knobs of a range of sizes and of varied contours.
DESCRIPTION Other objects of the invention will become apparent from the following description taken in connection with the accompanying drawings in which:
FIG. I is a perspective view of a form of lever attachment embodying the present invention;
FIG. 2 is a perspective view of the embodiment of FIG. 1 taken from the opposite side thereof;
FIG. 3 is a sectional view showing the embodiment of FIG. I mounted on one type of door knob;
FIG. 4 is a view, similar to FIG. 3, showing a door knob of a different contour;
FIG. 5 is a side elevational view, similar to FIG. 2, showing a modification of the embodiment of FIGS. 1 and 2; and
FIG. 6 is a sectional view looking in the direction of arrows 6-6 of FIG. 5.
In accordance with the present invention, lever attachment 10 comprises a lever portion 12, a clamp portion 13 and a face portion 14. The attachment may be formed of materials such as metal and/or synthetic resin (plastic) by a convenient known forming process such as casting, molding and/or welding.
Lever portion 12 may be of any desired length, and if desired, may be slightly curved. The clamp portion is an extension of lever portion 12 and defines an inner surface that is substantially cylindrical in shape. The clamp portion also includes a depending portion 15 in which a drilled hold is provided to receive threaded fastening means 16 such as screw 16a and nut 16b.
In order to provide a degree of resiliency to the clamp portion, a certain portion thereof is spaced apart from face portion 14 by a slot portion 17, as is best shown in FIG. 1. If desired, face portion 14 may define an opening 18 to provide access to a locking device that is sometimes centrally located relative to the front face of a door knob on which lever attachment 10 may be mounted.
The clamp portion 13 is made slightly larger than the corresponding diameter of the largest knob on which the lever attachment may be mounted, thus providing space for the accommodation of a plastic shim 19 so as to prevent scratching or other surface damage to the surface of a door knob on which the device is mounted. The provision of shims of various sizes limits the magnitude of the movement required of the clamp portion and yet permits the device to be installed on knobs of varying sizes.
The modified embodiment shown in FIGS. 5 and 6 is essentially like the embodiment shown in FIGS. 1 and 2. In the modified embodiment however, the inner surface defined by clamp portion 13 is continuous except for a very small gap defined between the upper surface 15a of the depending portion which is closely spaced apart from the lower surface 12a of the lever portion, as is best shown in FIG. 5. Additionally, the modified embodiment includes ribs 20 interconnecting the clamp portion 13 and the depending portion and these ribs are disposed along opposite sides of the depending portion, as is shown in FIG. 6. One of the sides of each of said ribs is angularly disposed relative to the other side to provide added stiffness and rigidity to the device and to simultaneously function as a wrench to prevent turning of nut 16b.
From the foregoing it is believed that assembly and use and operation of the device will be readily apparent. A shim of suitable size is inserted within the clamp portion and the clamp portion and shim is then inserted over and onto a door knob and clamped in desired position by tightening the threaded fastening means 116. The construction is such that the device can be used with almost any cross-sectional shape of door knob as is indicated in FIGS. 3 and 4. The face portion 14 engages the front face of the door knob and properly positions the device relative to the door knob, and effective clamping action is achieved regardless of the particular shape or contour of the knob. Thus, an operator need not exert any gripping action on the door knob and the door-latch operating mechanism can be actuated merely by applying a downward pressure on the latch portion 12.
While a particular embodiment of the invention has been illustrated and described, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the invention, and it is intended in the appended claims to cover all such changes and modifications that fall within the true spirit and scope of the invention.
What is claimed is:
1. An actuating attachment for door knobs of differing cross-sectional shapes comprising an actuating member having a lever portion and an integral clamp portion having a cylindrical surface connected to the lever portion for releasably gripping door knobs of varied contour,
4 portion are interconnected by spaced apart ribs and wherein a surface of at least one of said ribs is angularly disposed and engaged with a portion of said connecting means.

Claims (1)

1. An actuating attachment for door knobs of differing crosssectional shapes comprising an actuating member having a lever portion and an integral clamp portion having a cylindrical surface connected to the lever portion for releasably gripping door knobs of varied contour, a member depending from said clamp portion and spaced closely adjacent the lever portion, and means connecting said depending member and said lever portion together and readily detachably connecting said cylindrical surface to a door knob, wherein said clamp portion and said depending portion are interconnected by spaced apart ribs and wherein a surface of at least one of said ribs is angularly disposed and engaged with a portion of said connecting means.
US32564473 1973-01-22 1973-01-22 Lever attachment for door latch-operating device Expired - Lifetime US3827739A (en)

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Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960396A (en) * 1974-06-17 1976-06-01 Dowa Co., Ltd. Handle for opening and closing a door
US4018465A (en) * 1975-10-20 1977-04-19 Ramler David A Door opening device
US4223931A (en) * 1979-06-25 1980-09-23 Schlage Lock Company Doorknob attachment
US4285536A (en) * 1979-11-23 1981-08-25 Tlm Industries, Inc. Universal lever handle attachment for door knob
US4397489A (en) * 1980-12-22 1983-08-09 Lind Willard H Lever adapter for door knob
US4504087A (en) * 1980-06-30 1985-03-12 Pennington Alfred C Lever attachment for a rotary door knob
US4655059A (en) * 1981-06-05 1987-04-07 Best Lock Corporation Lever handle
US4783883A (en) * 1987-02-02 1988-11-15 Alexander Szalay Lever assists for door knobs
US4875386A (en) * 1989-06-05 1989-10-24 Dickerson Daryl E Handlegrip cruise assist device
US5220697A (en) * 1991-11-04 1993-06-22 Birchfield William T Handle assembly for shower nozzle assembly
US5231731A (en) * 1992-07-28 1993-08-03 Jones Jr Robert L Lever action retrofit door handle
US5288116A (en) * 1993-04-15 1994-02-22 Leeverall, Inc. Door handle adapter and method
US5725264A (en) * 1996-10-25 1998-03-10 Villarreal; Louis B. Doorknob attachment
WO1999002804A1 (en) 1997-07-11 1999-01-21 Warshaviak Jehuda T Handle
US6154928A (en) * 1998-12-30 2000-12-05 Bel-Art Products, Inc. Gripper adapter for doorknobs
US6289557B1 (en) * 1998-12-15 2001-09-18 Barry F. Manson Sanitary door handle assembly
US6447031B1 (en) * 2000-08-11 2002-09-10 O'hanlon Edward Lever handle for attachment to a round door lock handle
US6487751B2 (en) * 2000-02-18 2002-12-03 Regis P. Renaud Door safety devices
US6669241B1 (en) 2003-01-23 2003-12-30 Drew Kelley Door latch opening system
US6751827B1 (en) * 2002-09-14 2004-06-22 Joe Fok Door knob handle
US20040256866A1 (en) * 2003-06-17 2004-12-23 Deming Robert F. Straddling doorstop with upright
US20070007778A1 (en) * 2005-07-11 2007-01-11 Francis Gomes Non-metallic reinforced door handle adapter
WO2008081429A2 (en) * 2006-12-28 2008-07-10 Ben David, Yosef Handle-mounted safety apparatus to prevent a door from slamming closed
US20090172917A1 (en) * 2008-01-07 2009-07-09 Hope Landin Access door lever
US20120054985A1 (en) * 2010-09-07 2012-03-08 John Jacob Rothschild Handle attachment for doorknobs
USD940530S1 (en) * 2020-10-14 2022-01-11 Assa Abloy Access And Egress Hardware Group, Inc. Door pull
USD940529S1 (en) * 2020-10-14 2022-01-11 ASSA ABLOY Accessories and Door Controls Group, Inc. Door pull
JP7087037B2 (en) 2020-10-09 2022-06-20 三相電機株式会社 Door lever
US20220381055A1 (en) * 2021-06-01 2022-12-01 Jay Q Innovations Inc. Assistive device for doors
US20230076904A1 (en) * 2021-09-07 2023-03-09 Gci, Inc. Accessory door handle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733942A (en) * 1956-02-07 Handle attachment means
US2756088A (en) * 1954-09-03 1956-07-24 Arvid J Sutter Doorknob extension handles
US3385129A (en) * 1966-07-07 1968-05-28 Cutler Hammer Inc Means for mounting a lever to a rotatable shaft
US3575453A (en) * 1970-03-16 1971-04-20 Philip M Hohl Easy door opener

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733942A (en) * 1956-02-07 Handle attachment means
US2756088A (en) * 1954-09-03 1956-07-24 Arvid J Sutter Doorknob extension handles
US3385129A (en) * 1966-07-07 1968-05-28 Cutler Hammer Inc Means for mounting a lever to a rotatable shaft
US3575453A (en) * 1970-03-16 1971-04-20 Philip M Hohl Easy door opener

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960396A (en) * 1974-06-17 1976-06-01 Dowa Co., Ltd. Handle for opening and closing a door
US4018465A (en) * 1975-10-20 1977-04-19 Ramler David A Door opening device
US4223931A (en) * 1979-06-25 1980-09-23 Schlage Lock Company Doorknob attachment
US4285536A (en) * 1979-11-23 1981-08-25 Tlm Industries, Inc. Universal lever handle attachment for door knob
US4504087A (en) * 1980-06-30 1985-03-12 Pennington Alfred C Lever attachment for a rotary door knob
US4397489A (en) * 1980-12-22 1983-08-09 Lind Willard H Lever adapter for door knob
US4655059A (en) * 1981-06-05 1987-04-07 Best Lock Corporation Lever handle
US4783883A (en) * 1987-02-02 1988-11-15 Alexander Szalay Lever assists for door knobs
US4875386A (en) * 1989-06-05 1989-10-24 Dickerson Daryl E Handlegrip cruise assist device
US5220697A (en) * 1991-11-04 1993-06-22 Birchfield William T Handle assembly for shower nozzle assembly
US5231731A (en) * 1992-07-28 1993-08-03 Jones Jr Robert L Lever action retrofit door handle
US5288116A (en) * 1993-04-15 1994-02-22 Leeverall, Inc. Door handle adapter and method
US5725264A (en) * 1996-10-25 1998-03-10 Villarreal; Louis B. Doorknob attachment
WO1999002804A1 (en) 1997-07-11 1999-01-21 Warshaviak Jehuda T Handle
US6035492A (en) * 1997-07-11 2000-03-14 Warshaviak; Jehuda T. Handle
US6289557B1 (en) * 1998-12-15 2001-09-18 Barry F. Manson Sanitary door handle assembly
US6154928A (en) * 1998-12-30 2000-12-05 Bel-Art Products, Inc. Gripper adapter for doorknobs
US6487751B2 (en) * 2000-02-18 2002-12-03 Regis P. Renaud Door safety devices
US6447031B1 (en) * 2000-08-11 2002-09-10 O'hanlon Edward Lever handle for attachment to a round door lock handle
US6751827B1 (en) * 2002-09-14 2004-06-22 Joe Fok Door knob handle
US6669241B1 (en) 2003-01-23 2003-12-30 Drew Kelley Door latch opening system
US20040256866A1 (en) * 2003-06-17 2004-12-23 Deming Robert F. Straddling doorstop with upright
US7431358B2 (en) 2005-07-11 2008-10-07 Bel-Art Products, Inc. Non-metallic reinforced door handle adapter
US20070007778A1 (en) * 2005-07-11 2007-01-11 Francis Gomes Non-metallic reinforced door handle adapter
WO2008081429A2 (en) * 2006-12-28 2008-07-10 Ben David, Yosef Handle-mounted safety apparatus to prevent a door from slamming closed
WO2008081429A3 (en) * 2006-12-28 2009-04-23 Ben David Yosef Handle-mounted safety apparatus to prevent a door from slamming closed
US20090172917A1 (en) * 2008-01-07 2009-07-09 Hope Landin Access door lever
US7975352B2 (en) 2008-01-07 2011-07-12 Hope Landin Access door lever
US20120054985A1 (en) * 2010-09-07 2012-03-08 John Jacob Rothschild Handle attachment for doorknobs
US8448298B2 (en) * 2010-09-07 2013-05-28 John Jacob Rothschild Handle attachment for doorknobs
JP7087037B2 (en) 2020-10-09 2022-06-20 三相電機株式会社 Door lever
USD940530S1 (en) * 2020-10-14 2022-01-11 Assa Abloy Access And Egress Hardware Group, Inc. Door pull
USD940529S1 (en) * 2020-10-14 2022-01-11 ASSA ABLOY Accessories and Door Controls Group, Inc. Door pull
US20220381055A1 (en) * 2021-06-01 2022-12-01 Jay Q Innovations Inc. Assistive device for doors
US20230076904A1 (en) * 2021-09-07 2023-03-09 Gci, Inc. Accessory door handle

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