US3799593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door latch
Assignee: MANUACTURERS HANOVER TRUST Co
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Filing: 1972-08-09
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Granted: 1974-03-26
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Expires: 1992-08-09
Abstract
Abstract A door latch includes a reciprocating bolt having an elongated bolt opening therethrough. A pair of escutcheon plates close an opening through a door in which the bolt is mounted. The escutcheon plates have cooperating connecting means extending through the elongated bolt opening for connecting the two escutcheon plates together and to the door. The bolt reciprocates relative to the connecting means. A knob has an elongated shank extending through an elongated opening in one escutcheon plate. The shank is connected with the bolt.
Inventors
- 👤 H Dielman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:33
CPC Classifications
E; E05; E05B; E05B15/00; E05B15/02; E05C; E05C1/00; E05C1/02; E05C1/04; E05B65/00; E05B65/0035; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1022; Y10T292/91
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
231 words
A reciprocating latch bolt assembly for a door having opposite faces and an edge surface, a recess formed in said door extending inward from said edge surface intermediate said opposite faces, a bolt member reciprocatingly positioned in said recess for reciprocating movement in predetermined opposite directions substantially perpendicular to said edge surface, an opening through said door, said opening being spaced inwardly from said edge surface and intersecting said recess, said opening defining holes in said opposite faces, a pair of escutcheon plates positioned against said opposite faces and closing said holes, one of said plates having an elongated opening therein elongated in said predetermined opposite directions, a knob member having an elongated shank slidably received through said elongated opening in said escutcheon plate for reciprocating movement in said predetermined opposite directions relative to said escutcheon plates, a hole in said bolt member, said elongated shank being received in said hole for connecting said knob member to said bolt member so that manual force applied to said knob in said predetermined opposite directions reciprocates said bolt member, an elongated bolt member opening in said bolt member elongated in said predetermined opposite directions and aligned with said opening through said door, and cooperating connecting means on said escutcheon plates extending through said elongated bolt member opening and connecting said escutcheon plates together, said bolt member being reciprocable relative to said connecting means.
Claim 2
Dependent Claim
231 words
A reciprocating latch bolt assembly for a door having opposite faces and an edge surface, a recess formed in said door extending inward from said edge surface intermediate said opposite faces, a bolt member reciprocatingly positioned in said recess for reciprocating movement in predetermined opposite directions substantially perpendicular to said edge surface, an opening through said door, said opening being spaced inwardly from said edge surface and intersecting said recess, said opening defining holes in said opposite faces, a pair of escutcheon plates positioned against said opposite faces and closing said holes, one of said plates having an elongated opening therein elongated in said predetermined opposite directions, a knob member having an elongated shank slidably received through said elongated opening in said escutcheon plate for reciprocating movement in said predetermined opposite directions relative to said escutcheon plates, a hole in said bolt member, said elongated shank being received in said hole for connecting said knob member to said bolt member so that manual force applied to said knob in said predetermined opposite directions reciprocates said bolt member, an elongated bolt member opening in said bolt member elongated in said predetermined opposite directions and aligned with said opening through said door, and cooperating connecting means on said escutcheon plates extending through said elongated bolt member opening and connecting said escutcheon plates together, said bolt member being reciprocable relative to said connecting means.
Claim 3
Dependent Claim
70 words
The latch of claim 1 wherein said escutcheon plates have interior surfaces facing said door, said cooperating connecting means comprising pin means attached to said interior surface of one of said escutcheon plates and socket means attached to said interior surface of the other of said escutcheon plates, said pin means being received in said socket means, and friction retainer means for securing said pin means in said socket means.
Claim 4
Dependent Claim
32 words
The latch of claim 2 wherein said elongated bolt member opening has a longitudinal axis extending parallel to said predetermined directions and said longitudinal axis intersects said hole in said bolt member.
Claim 5
Dependent Claim
12 words
The latch of claim 3 wherein said bolt member is substantially cylindrical.
Claim 6
Dependent Claim
38 words
The latch of claim 3 wherein said bolt member is substantially rectangular and said elongated bolt member opening is enlarged in a direction parallel to said opposite faces of said door and perpendicular to said predetermined opposite directions.
Claim 7
Dependent Claim
70 words
The latch of claim 1 wherein said escutcheon plates have interior surfaces facing said door, said cooperating connecting means comprising pin means attached to said interior surface of one of said escutcheon plates and socket means attached to said interior surface of the other of said escutcheon plates, said pin means being received in said socket means, and friction retainer means for securing said pin means in said socket means.
Claim 8
Dependent Claim
31 words
The latch of claim 1 wherein said escutcheon plates are in spaced relationship to said bolt member and said bolt member reciprocates relative to said escutcheon plates out of contact therewith.
Claim 9
Dependent Claim
73 words
The latch of claim 1 wherein said elongated opening in said one escutcheon plate has a longitudinal axis and said escutcheon plates have interior faces, said connecting means comprising a pin and a socket defining first and second connecting structures, one of said first and second structures being attached to each of said interior faces, said structure attached to said interior face of said one escutcheon plate being intersected by said longitudinal axis.
Claim 10
Dependent Claim
30 words
The latch of claim 1 and further including synthetic plastic slide washer means positioned on said elongated shank of said knob member on opposite sides of said one escutcheon plate.
Claim 11
Dependent Claim
165 words
The latch of claim 1 wherein said bolt member has an end portion adjacent said edge surface of said door for reception in a recess in a structural member adjacent said edge surface of said door, said bolt member being shiftable in one direction to move said end portion outwardly relative to said edge surface to a locking position received in said recess and in an opposite direction to move said end portion inwardly relative to said edge surface to an unlocked position out of said recess, said end portion having an outwardly rounded terminal end surface and said recess having an outer edge at least a portion of said terminal end surface being aligned with said outer edge of said recess in said locking position of said end portion of said bolt member, whereby vigorous shaking of said door impacts said terminal end surface against said outer edge of said recess for shifting said bolt member in said opposite direction to said unlocked position.
Claim 12
Dependent Claim
193 words
In a reciprocating unbiased latch bolt assembly for a door having an edge surface, a bolt member reciprocatingly mounted on said door for reciprocating movement in opposite directions substantially perpendicular to said edge surface, said bolt member having an end portion adjacent said edge surface of said door for reception in a recess in a structural member adjacent said edge surface of said door, said bolt member being shiftable in one direction to move said end portion outwardly relative to said edge surface to a locking position received in said recess and in an opposite direction to move said end portion inwardly relative to said edge surface to an unlocked position out of said recess, the improvement which comprises said end portion having an outwardly rounded terminal end surface and said recess having an outer edge, and means limiting insertion of said terminal end surface into said recess such that in the locking position at least a portion of said terminal end surface is aligned with said outer edge whereby vigorous shaking of said door cams said terminal end surface against said outer edge and shifts said bolt member to said unlocked position.
Claim 13
Dependent Claim
193 words
In a reciprocating unbiased latch bolt assembly for a door having an edge surface, a bolt member reciprocatingly mounted on said door for reciprocating movement in opposite directions substantially perpendicular to said edge surface, said bolt member having an end portion adjacent said edge surface of said door for reception in a recess in a structural member adjacent said edge surface of said door, said bolt member being shiftable in one direction to move said end portion outwardly relative to said edge surface to a locking position received in said recess and in an opposite direction to move said end portion inwardly relative to said edge surface to an unlocked position out of said recess, the improvement which comprises said end portion having an outwardly rounded terminal end surface and said recess having an outer edge, and means limiting insertion of said terminal end surface into said recess such that in the locking position at least a portion of said terminal end surface is aligned with said outer edge whereby vigorous shaking of said door cams said terminal end surface against said outer edge and shifts said bolt member to said unlocked position.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |