US3737183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door lock
Assignee: The Eastern Co
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Filing: 1971-05-20
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Granted: 1973-06-05
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Expires: 1991-05-20
Abstract
Abstract A cam-type door lock including latch members on opposite ends of an oscillatable rod attachable to a pivoted door adjacent to the non-pivoted side and engageable with keeper members attachable to the door frame adjacent to opposite side edges of the door to secure the door in closed position and a third lock point intermediate the opposite side edges including a strap or latch member secured to the shaft intermediate its ends engageable with a third keeper member on the adjacent door or door frame to pull the two together and towards closed position. The first mentioned latching members overlie the end of the rod or shaft to which they are attached, are symmetrical about the axis of the rod or shaft and each has oppositely projecting forked cam portions adapted to straddle two spaced post portions of the cooperating keeper members. The post portions of the keeper members have tapered side surfaces engageable by the forked cam portions during latching to assure alignment of the door with the frame and to prevent lateral shifting or distorting of the frame in the plane of the door after latching. One post portion of each of the first mentioned keeper members has projecting flange portions with concave surfaces engageable by the forked cam portions of the associated latch member to retain the door in a closed position.
Inventors
- 👤 J Pastva
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:05
CPC Classifications
E; E05; E05B; E05B83/00; E05B83/02; E05B83/08; E05B83/10; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0803; Y10T292/0805; Y10T292/0806; Y10T292/1043; Y10T292/1044; Y10T292/1045; Y10T292/1049
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
457 words
A door control mechanism for securing a swinging door in closed position, said mechanism comprising a shaft, bearing members adjacent to opposite ends of said shaft adapted to rotatably connect said shaft to a swinging door with its axis of rotation spaced from and parallel with the pivotal axis of the door, means for oscillating said shaft about its longitudinal axis, discrete latch members secured to said shaft adjacent to opposite ends thereof each having portions projecting generally in opposite directions transversely of said shaft, discrete keeper members adapted to be secured to structure adjacent to opposite edge portions of the door that extend transversely to the pivotal axis of the door each having a base portion and spaced portions projecting from said base portion for engagement with said projecting portions of said latch members when said bearing members are secured to said door and said keeper members to said structure and said shaft is turned in one direction, one of said portions projecting from said base portion of each of said keeper members having a portion spaced from said base portion providing a surface facing said base portion for engagement by one of said projecting portions of said latch members when said shaft is turned in said one direction, a third discrete latch member connected to said shaft intermediate its ends for pivotal movement about an axis substantially parallel with but offset from the axis of said shaft, said third latch member having a body portion and a latching portion adjacent to its non-pivoted end providing a surface facing one side of said body portion and said shaft and inclined away from said body portion and a projection on said one side of said body portion intermediate the ends of said third latch member a part spaced from said body portion providing a surface facing said body portion, a discrete guide member adapted to be connected to the door intermediate the edge of the door opposite its pivotal axis and said shaft, said guide member having a portion adapted to be positioned between said body portion of said third latch member and said surface on said part of said projection on said one side of said body portion spaced from said body portion for limiting pivotal movement of said third latch member, and a third discrete keeper member having a base portion adapted to be secured to structure adjacent to the edge of the door opposite its pivotal axis, said third keeper member having a portion spaced from said base portion providing a surface facing said base portion and inclined with respect thereto for engagement by said surface on said latching portion of said third latch member when saId shaft is turned in said one direction.
Claim 2
Dependent Claim
457 words
A door control mechanism for securing a swinging door in closed position, said mechanism comprising a shaft, bearing members adjacent to opposite ends of said shaft adapted to rotatably connect said shaft to a swinging door with its axis of rotation spaced from and parallel with the pivotal axis of the door, means for oscillating said shaft about its longitudinal axis, discrete latch members secured to said shaft adjacent to opposite ends thereof each having portions projecting generally in opposite directions transversely of said shaft, discrete keeper members adapted to be secured to structure adjacent to opposite edge portions of the door that extend transversely to the pivotal axis of the door each having a base portion and spaced portions projecting from said base portion for engagement with said projecting portions of said latch members when said bearing members are secured to said door and said keeper members to said structure and said shaft is turned in one direction, one of said portions projecting from said base portion of each of said keeper members having a portion spaced from said base portion providing a surface facing said base portion for engagement by one of said projecting portions of said latch members when said shaft is turned in said one direction, a third discrete latch member connected to said shaft intermediate its ends for pivotal movement about an axis substantially parallel with but offset from the axis of said shaft, said third latch member having a body portion and a latching portion adjacent to its non-pivoted end providing a surface facing one side of said body portion and said shaft and inclined away from said body portion and a projection on said one side of said body portion intermediate the ends of said third latch member a part spaced from said body portion providing a surface facing said body portion, a discrete guide member adapted to be connected to the door intermediate the edge of the door opposite its pivotal axis and said shaft, said guide member having a portion adapted to be positioned between said body portion of said third latch member and said surface on said part of said projection on said one side of said body portion spaced from said body portion for limiting pivotal movement of said third latch member, and a third discrete keeper member having a base portion adapted to be secured to structure adjacent to the edge of the door opposite its pivotal axis, said third keeper member having a portion spaced from said base portion providing a surface facing said base portion and inclined with respect thereto for engagement by said surface on said latching portion of said third latch member when saId shaft is turned in said one direction.
Claim 3
Dependent Claim
503 words
A door control mechanism for securing a swinging door in closed position, said mechanism comprising a shaft, bearing members adjacent to opposite ends of said shaft adapted to rotatably connect said shaft to a swinging door with its axis of rotation spaced from an parallel with the pivotal axis of the door, means for oscillating said shaft about its longitudinal axis, discrete latch members secured to said shaft adjacent to opposite ends thereof each having portions projecting generally in opposite directions transversely of said shaft, discrete keeper members adapted to be secured to structure adjacent to opposite edge portions of the door that extend transversely to the pivotal axis of the door each having a base portion and spaced portions projecting from said base portion for engagement with said projecting portions of said latch members when said bearing members are secured to said door and said keeper members to said structure and said shaft is turned in one direction, one of said portions projecting from said base portions of each of said keeper members having a portion spaced from said base portion providing a surface facing said base portion for engagement by one of said projecting portions of said latch members when said shaft is turned in said one direction, a third discrete latch member connected to said shaft intermediate its ends for pivotal movement about an axis substantially parallel with but offset from the axis of said shaft, said third latch member having a body portion and a latching portion adjacent to its non-pivoted end providing a surface facing one side of said body portion and said shaft and inclined away from said body portion and a projection on said one side of said body portion intermediate the ends of said third latch member having a part spaced from said body portion providing a surface facing said body portion, a discrete guide member adapted to be connected to the door intermediate the edge of the door opposite its pivotal axis and said shaft, said guide member having a portion adapted to be positioned between said body portion of said third latch member and said surface on said part of said projection on said one side of said body portion spaced from said body portion for limiting pivotal movement of said third latch member, and a third discrete keeper member having a base portion adapted to be secured to structure adjacent to the edge of the door opposite its pivotal axis, said third keeper member having a portion spaced from said base portion providing a surface facing said base portion and inclined with respect thereto for engagement by said surface on said latching portion of said third latch member when said shaft is turned in said one direction, said third latch member providing a surface facing in the same direction as said one side of said body portion of said third latch member faces for abutment with said third keeper member upon rotation of said shaft in the direction opposite said one direction.
Claim 4
Dependent Claim
503 words
A door control mechanism for securing a swinging door in closed position, said mechanism comprising a shaft, bearing members adjacent to opposite ends of said shaft adapted to rotatably connect said shaft to a swinging door with its axis of rotation spaced from an parallel with the pivotal axis of the door, means for oscillating said shaft about its longitudinal axis, discrete latch members secured to said shaft adjacent to opposite ends thereof each having portions projecting generally in opposite directions transversely of said shaft, discrete keeper members adapted to be secured to structure adjacent to opposite edge portions of the door that extend transversely to the pivotal axis of the door each having a base portion and spaced portions projecting from said base portion for engagement with said projecting portions of said latch members when said bearing members are secured to said door and said keeper members to said structure and said shaft is turned in one direction, one of said portions projecting from said base portions of each of said keeper members having a portion spaced from said base portion providing a surface facing said base portion for engagement by one of said projecting portions of said latch members when said shaft is turned in said one direction, a third discrete latch member connected to said shaft intermediate its ends for pivotal movement about an axis substantially parallel with but offset from the axis of said shaft, said third latch member having a body portion and a latching portion adjacent to its non-pivoted end providing a surface facing one side of said body portion and said shaft and inclined away from said body portion and a projection on said one side of said body portion intermediate the ends of said third latch member having a part spaced from said body portion providing a surface facing said body portion, a discrete guide member adapted to be connected to the door intermediate the edge of the door opposite its pivotal axis and said shaft, said guide member having a portion adapted to be positioned between said body portion of said third latch member and said surface on said part of said projection on said one side of said body portion spaced from said body portion for limiting pivotal movement of said third latch member, and a third discrete keeper member having a base portion adapted to be secured to structure adjacent to the edge of the door opposite its pivotal axis, said third keeper member having a portion spaced from said base portion providing a surface facing said base portion and inclined with respect thereto for engagement by said surface on said latching portion of said third latch member when said shaft is turned in said one direction, said third latch member providing a surface facing in the same direction as said one side of said body portion of said third latch member faces for abutment with said third keeper member upon rotation of said shaft in the direction opposite said one direction.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |