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    PLASTIC DOOR LOCK
    1.
    发明专利
    PLASTIC DOOR LOCK 未知

    公开(公告)号：CA1061830A

    公开(公告)日：1979-09-04

    申请号：CA278883

    申请日：1977-05-20

    Applicant: NORRIS INDUSTRIES

    Inventor： POTTER DENNIS G ,  DIETRICH HAGEN ,  POTSCHKA JOSEPH

    IPC: E05C1/16 ,  E05C1/08 ,  E05B15/00

    Abstract: PLASTIC DOOR LOCK A plastic door lock, sometimes referred to as a door latch, makes use of moldable plastic material for most of the individual parts of the lock assembly with opposite roses adapted to interlock with each other and be held together with a single screw on the axial center line of the knobs and accessible from the outside. When used as a privacy lock unlocking the lock from the outside is prevented by pushing the inside knob into a releasble but nonrotatable engagement with the inside rose. A lost motion connection between the latch bolt and roll back spindle allows the door to be closed without damage to the latch bolt when the inside knob is locked. Inherent resiliency in the material of the latch bolt case, in cooperation with the movable latch bolt, releasably returns and holds the latch bolt in extended position.

    PLASTIC DOOR LOCK
    2.
    发明专利
    PLASTIC DOOR LOCK 未知

    公开(公告)号：AU2496977A

    公开(公告)日：1978-11-09

    申请号：AU2496977

    申请日：1977-05-06

    Applicant: NORRIS INDUSTRIES

    Inventor： POTTER DENNIS G ,  DIETRICH HAGEN ,  POTSCHKA JOSEPH

    IPC: E05C1/16

    Abstract: A plastic door lock makes use of moldable plastic material for most of the individual parts with opposite roses adapted to interlock with each other and be held together with a single screw on the axial center line of the knobs and accessible from the outside. A lost motion connection between the latch bolt and spindle allows the door to be closed without damage to the latch bolt when the inside knob is locked. Inherent resiliency in the material of the latch bolt case formed into spring fingers, in cooperation with the movable latch bolt shaft, releasably returns the latch bolt shaft to, and holds the shaft in extended position. Under some circumstances spring action of the fingers is supplemented with an auxiliary separate spring element to vary the spring return characteristics of the latch bolt and the knobs.

    PLASTIC LATCH BOLT FOR DOOR LOCK
    3.
    发明专利
    PLASTIC LATCH BOLT FOR DOOR LOCK 未知

    公开(公告)号：CA1067120A

    公开(公告)日：1979-11-27

    申请号：CA278913

    申请日：1977-05-20

    Applicant: NORRIS INDUSTRIES

    Inventor： POTTER DENNIS G ,  DIETRICH HAGEN ,  POTSCHKA JOSEPH

    IPC: E05C1/16 ,  E05C1/12 ,  E05B3/08

    Abstract: PLASTIC LATCH BOLT FOR DOOR LOCK A plastic door lock makes use of moldable plastic material for most of the individual parts with opposite roses adapted to interlock with each other and be held together with a single screw on the axial center line of the knobs and accessible from the outside. A lost motion connection between the latch bolt and spindle allows the door to be closed without damage to the latch bolt when the inside knob is locked. Inherent resiliency in the material of the latch bolt case formed into spring fingers, in cooperation with the movable latch bolt shaft releasably returns the latch bolt shaft to, and holds the shaft in extended position. Under some circumstances spring action of the fingers is supplemented with an auxiliary separate spring element to vary the spring return characteristics of the latch bolt and the knobs.

    KNOB ATTACHMENT FOR DOOR LATCH
    4.
    发明专利
    KNOB ATTACHMENT FOR DOOR LATCH 未知

    公开(公告)号：CA1092178A

    公开(公告)日：1980-12-23

    申请号：CA278882

    申请日：1977-05-20

    Applicant: NORRIS INDUSTRIES

    Inventor： POTTER DENNIS G ,  DIETRICH HAGEN ,  POTSCHKA JOSEPH

    IPC: E05C1/16 ,  E05B3/06

    Abstract: KNOB ATTACHMENT FOR DOOR LATCH A door latch makes use of moldable material for most of the individual parts with opposite roses adapted to interlock with each other and be held together with a single screw on the axial center line of the knob and accessible from the outside. Prior to installation of the latch on the door, each knob is subassembled with the corresponding rose by employment of an arcuate shoulder on an inner central portion of the knob which is rotated to a position of engagement with a complementary arcuate shoulder in in the rose. Rotation inhibiting detents prevent accidental disassembly until the spindle is mounted in place and the spindle then locks the knob against disassembly as long as the latch remains mounted on the door.

    7.
    发明专利
    未知

    公开(公告)号：BE855266A

    公开(公告)日：1977-10-03

    申请号：BE1008170

    申请日：1977-06-01

    Applicant: NORRIS INDUSTRIES

    Inventor： POTTER DENNIS G ,  DIETRICH HAGEN ,  POTSCHKA JOSEPH

    IPC: E05C1/16 ,  E05C

    Abstract: A plastic door lock makes use of moldable plastic material for most of the individual parts with opposite roses adapted to interlock with each other and be held together with a single screw on the axial center line of the knobs and accessible from the outside. A lost motion connection between the latch bolt and spindle allows the door to be closed without damage to the latch bolt when the inside knob is locked. Inherent resiliency in the material of the latch bolt case formed into spring fingers, in cooperation with the movable latch bolt shaft, releasably returns the latch bolt shaft to, and holds the shaft in extended position. Under some circumstances spring action of the fingers is supplemented with an auxiliary separate spring element to vary the spring return characteristics of the latch bolt and the knobs.

    INCREMENTAL DEAD BOLT LATCH
    10.
    发明专利
    INCREMENTAL DEAD BOLT LATCH 未知

    公开(公告)号：CA959519A

    公开(公告)日：1974-12-17

    申请号：CA149173

    申请日：1972-08-10

    Applicant: NORRIS INDUSTRIES

    Inventor： SANDERS VERNARD W ,  POTTER DENNIS G

    IPC: E05B15/16 ,  E05B63/00

    Abstract: A dead bolt latch for a door has a rotating cam lever action for extending the bolt into a strike plate recess in the door frame. The cam has the form of a pivoted arm and is rotated by the tail piece of a lock device. The pivot axis is near one edge of a lock case and engages a cam opening in an actuator slide at the opposite side of the latch case, the actuator slide being attached to the latch bolt. A series of stepped shoulders on the cam lever serve as blockers to prevent retraction of the actuator slide by pressure against the latch bolt so that the latch bolt can be locked in any one of several extended positions and need not occupy a fully extended position to be assured of there being no unauthorized retraction which might otherwise be possible with a partially extended latch bolt.

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