US3806177A - Wear-resistant rollback - Google Patents

Wear-resistant rollback Download PDF

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Publication number
US3806177A
US3806177A US00284623A US28462372A US3806177A US 3806177 A US3806177 A US 3806177A US 00284623 A US00284623 A US 00284623A US 28462372 A US28462372 A US 28462372A US 3806177 A US3806177 A US 3806177A
Authority
US
United States
Prior art keywords
sliding element
plate
pawl
wear
cam
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
Application number
US00284623A
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English (en)
Inventor
B Rivadossi
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
Application granted granted Critical
Publication of US3806177A publication Critical patent/US3806177A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C1/00—Fastening devices with bolts moving rectilinearly
    • E05C1/08—Fastening devices with bolts moving rectilinearly with latching action
    • E05C1/12—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
    • E05C1/16—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the handle or member moving essentially in a plane substantially parallel to the wing or frame
    • E05C1/163—Cylindrical or tubular latches
    • 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
    • Y10S292/38—Plastic latch parts
    • 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
    • Y10S292/52—Rollbacks
    • 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
    • Y10T292/06—Adjustable backset
    • 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
    • Y10T292/096—Sliding
    • Y10T292/0969—Spring projected
    • Y10T292/097—Operating means
    • Y10T292/0977—Cam
    • Y10T292/0989—Plural rollback elements directionally selectively effective
    • Y10T292/0991—On a tubular member

Definitions

  • ABSTRACT [30] Foreign Application Priority Data Se t 2 1971 Italy 5197!
  • a cylinder lock comprising a sliding element with a p v longitudinal cavity within a cross-sectionally rectangu- [52] U S. Cl 292/169 23 292/1310 38 292/DIG 52 lar frame; a strong recoil spring in the cavity interme- [511 Cl Eosc n2 diate the frontal plate of the sliding element and a [58] Mei!
  • the sliding element which is engaged by the rotating cammed pawls associated with the stem of the handle for displacing the lock bolt or plunger is generally urged by a relatively weak recoil spring and, in almost all cases, the sliding element of the lock and the bolt constitute a single member and are urged by such recoil spring so that they are displaced always concurrently, even when the bolt is not acted upon directly by the handle, due to the contact of the bolt against the striking plate.
  • the cam check lock engages directly the sliding element with the result that, since both members are generally constructed of the same material, such as brass, there is an accelerated wear of the contact surfaces and a consequently undesirable rapid alteration in the normal operation of the lock.
  • the lock of the present invention comprising: a sliding element having a longitudinal cavity therein and being urged by strong recoil spring positioned between a frontal plate of the sliding element and a fixed shoulder which is integral with the body of the lock; a bolt which is engaged by a suitable pressure spring and is guided on the sliding element so as to be displaced therewith when the handle of the lock is acted upon, but retaining the ability of independent axial displacements when contacting the striking plate on the door; and a pair of wear-resistant plates, made of strong material such as, for example, case-hardened steel, said plates being positioned so as to enclose the pawl associated with the stein of the handle and, particularly, safeguarding against wear those contact surfaces between the pawl and the sliding element.
  • the main object of the present invention to provide a cylindrical lock which comprises a pressure spring capable of insuring the return of the handle of the lock to its original neutral position irrespective of the weight thereof.
  • FIG. 1 is a perspective view of the lock of the invention
  • FIGS. 2 and 3 are sectional elevational views of the assembled lock, showing the bolt displaced, respectively, outwardly and inwardly;
  • FIG. 4 is a detailed view of the section of the lock containing the wear-resistant plates.
  • FIG. 5 is a sectional view taken in the direction of arrows A-A of FIG. 4.
  • the lock of the invention comprises a cylindrical body 1 with a frontal plate 2 and formed of two halves assembled into a single entity.
  • a sliding element 3 having a substantially rectangular cross-sectional frame and defining a cavity 4.
  • a strong recoil spring 5 which operates between a frontal striking plate 6 of the sliding element 3 and a rigid shoulder 7 integral with one of the halves of the body 1.
  • a rod 8 is associated with the frontal plate 6 of the sliding element 3 with ability of axial sliding motion therewithin.
  • Rod 8 is integrally fixed to a bolt or plunger 9 of the lock and is provided with a terminal arresting ring 10 for preventing the disengagement of the rod 8-from the sliding element 3 and for allowing the axial displacement of the bolt 9 toward the inside of the lock as element 3 slides.
  • a suitable pressure spring 11 to allow the axial displacement of'the bolt 9 upon contact with the door striking plate (not shown), independently of the sliding motion of element 3.
  • a pawl 13 At the extremity 12 of the sliding element 3, opposed to the extremity near the bolt 9, there is provided a pawl 13 with a radially protruding cam 14 and with a cross-sectionally square opening 15, which opening is associated with the stem of the lock handle (not shown).
  • the pawl 13 is positioned within the cavity 4 of the sliding element 3 so that the extremities 14' of the protruding cam 14 act in conventional fashion upon the corresponding shoulders 16 provided in the sliding element 3 of the lock.
  • a wear-resistant U-shaped plate 17 constructed of a suitable material such as, for example, case-hardened steel.
  • the ends 18 of the plate 17 are folded so as to enclose therein the shoulders 16 of the sliding element 3.
  • a second wear-resistant plate 20 positioned solidly within a seat 19 provided at the base of the radial cam 14.
  • the ends 21 of this second plate 20 are folded over so as to envelope and to be in firm contact with the extremities 14' of the cam 14 as well as with the ends 18 of the plate 17.
  • the pawl l3 By acting upon the lock handle (not shown), the pawl l3 effects an angular displacement with the resultant action of the radial protruding cam 14 upon the shoul ders 16 of the sliding element 3, which consequently is displaced axially and concurrently with the bolt 9 against the spring 5.
  • the spring Upon termination of the action on the handle of the lock, the spring returns the sliding element 3 and, consequently, the stem of the handle to its original neutral position.
  • a cylinder lock comprising a cylindrical body having two halves assembled to one another into a single entity, a pawl with radially protruding cam, a sliding element within the body with shoulders acted upon by the pawl, a bolt connected with the sliding element and capable of axial displacements concurrently therewith, the improvement comprising a frame-shaped sliding element defining a cavity therein; a frontal plate on said sliding element; a shoulder provided on the body of the lock spaced from said frontal plate; a recoil spring positioned intermediate said frontal plate and said shoulder on said body; wear-resistant plates enclosing and protecting the radially protruding cam of the pawl from frictional wear against the shoulders upon which the cam acts; the pawl being positioned within said cavity and wherein a'first wear-resistant plate is mounted intermediate said sliding element and the pawl on the side opposite the cam, said first plate having its extremitiesfolded over so as to enclose the shoulders of said sliding element, and wherein a second wear
  • said bolt comprises a rod associated with said frontal plate of said sliding element so as to effect axial displacements independently of said sliding element, said rod having thereabout a pressure spring.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)
  • Sheet Holders (AREA)
  • Scissors And Nippers (AREA)
US00284623A 1971-09-02 1972-08-29 Wear-resistant rollback Expired - Lifetime US3806177A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT5197/71A IT940304B (it) 1971-09-02 1971-09-02 Serratura tubolare perfezionata

Publications (1)

Publication Number Publication Date
US3806177A true US3806177A (en) 1974-04-23

Family

ID=11119184

Family Applications (1)

Application Number Title Priority Date Filing Date
US00284623A Expired - Lifetime US3806177A (en) 1971-09-02 1972-08-29 Wear-resistant rollback

Country Status (7)

Country Link
US (1) US3806177A (enrdf_load_stackoverflow)
JP (2) JPS4836000A (enrdf_load_stackoverflow)
CA (1) CA961891A (enrdf_load_stackoverflow)
ES (1) ES183536Y (enrdf_load_stackoverflow)
FR (1) FR2152059A5 (enrdf_load_stackoverflow)
GB (1) GB1366779A (enrdf_load_stackoverflow)
IT (1) IT940304B (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5211432A (en) * 1992-07-08 1993-05-18 Lin Jui C Latch unit for door locks
GB2295196A (en) * 1994-11-17 1996-05-22 Keiper Recaro Gmbh Co Device for locking an armrest pivoted to a vehicle seat
GB2404419A (en) * 2003-07-25 2005-02-02 Gainsborough Hardware Ind Ltd Latch comprising master cam and slave cam providing actuation of latch from small rotation of master cam

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58196067U (ja) * 1982-06-18 1983-12-27 石川島建材工業株式会社 ナツト等の締め付け装置
AT381756B (de) * 1983-07-25 1986-11-25 Sfs Stadler Ag Beschlag zum loesbaren feststellen von fensterund tuerfluegeln od. dgl.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2759751A (en) * 1955-02-08 1956-08-21 Kaiser Fred Door latch mechanism
US2803957A (en) * 1956-04-09 1957-08-27 Harry F George Latching mechanism
US2846255A (en) * 1954-06-28 1958-08-05 Sargent & Co Door locks

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS436079Y1 (enrdf_load_stackoverflow) * 1966-07-15 1968-03-16

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2846255A (en) * 1954-06-28 1958-08-05 Sargent & Co Door locks
US2759751A (en) * 1955-02-08 1956-08-21 Kaiser Fred Door latch mechanism
US2803957A (en) * 1956-04-09 1957-08-27 Harry F George Latching mechanism

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5211432A (en) * 1992-07-08 1993-05-18 Lin Jui C Latch unit for door locks
GB2295196A (en) * 1994-11-17 1996-05-22 Keiper Recaro Gmbh Co Device for locking an armrest pivoted to a vehicle seat
GB2295196B (en) * 1994-11-17 1997-11-05 Keiper Recaro Gmbh Co Locking device for the armrest of a vehicle seat
GB2404419A (en) * 2003-07-25 2005-02-02 Gainsborough Hardware Ind Ltd Latch comprising master cam and slave cam providing actuation of latch from small rotation of master cam
US20050057051A1 (en) * 2003-07-25 2005-03-17 Ian Bartos Latch
GB2404419B (en) * 2003-07-25 2006-07-19 Gainsborough Hardware Ind Ltd A latch
US8066309B2 (en) * 2003-07-25 2011-11-29 Gainsborough Hardware Industries, Limited Latch

Also Published As

Publication number Publication date
ES183536U (es) 1973-07-16
GB1366779A (en) 1974-09-11
ES183536Y (es) 1975-05-01
JPS4836000A (enrdf_load_stackoverflow) 1973-05-26
IT940304B (it) 1973-02-10
FR2152059A5 (enrdf_load_stackoverflow) 1973-04-20
JPS5446700U (enrdf_load_stackoverflow) 1979-03-31
CA961891A (en) 1975-01-28

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