US3822440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Springless self-latching hinge
Assignee: JAYBEE Manufacturing CORP
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Filing: 1972-04-12
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Granted: 1974-07-09
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Expires: 1992-04-12
Abstract
Abstract A springless self-latching hinge includes a pair of hinge leaves pivotally connected by a hinge pin. One leaf has a hinge knuckle the end of which incompletely encircles the pin to form a recessed bearing sleeve having a cam engaging edge. The other member has at least one hinge knuckle terminating at a hinge pin encircling bearing sleeve and at least one laterally extending, resilient spring leaf cooperating with a cam block disposed between the leaf and the recessed bearing sleeve to exert a force on the cam engaging edge for releaseably maintaining said hinge closed.
Inventors
- 👤 B Stansbury
- 👤 F Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:53
CPC Classifications
E; E05; E05D; E05D11/00; E05D11/10; E05D11/1014; E05D11/1028; E05D11/105; E05Y; E05Y2900/00; E05Y2900/20
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
145 words
A self-latching hinge having a pair of hinge members pivotally connected by a hinge pin, characterized in that: a. one member has a hinge knuckle the end of which incompletely encircles said pin to define a recessed bearing sleeve having a cam engaging edge, b. the other member is unitary and includes a generally planar section having at least one hinge knuckle terminating at a hinge pin encircling bearing sleeve and at least on laterally extending resilient spring leaf, said spring leaf being struck from said section in the same lateral direction as said hinge pin encircling bearing sleeve, c. there being a cam block disposed between said spring leaf and said recessed bearing sleeve to exert a force on said cam engaging edge to maintain said hinge closed, said force resulting from the combined resiliency of said spring leaf and said one hinge knuckle.
Claim 2
Dependent Claim
145 words
A self-latching hinge having a pair of hinge members pivotally connected by a hinge pin, characterized in that: a. one member has a hinge knuckle the end of which incompletely encircles said pin to define a recessed bearing sleeve having a cam engaging edge, b. the other member is unitary and includes a generally planar section having at least one hinge knuckle terminating at a hinge pin encircling bearing sleeve and at least on laterally extending resilient spring leaf, said spring leaf being struck from said section in the same lateral direction as said hinge pin encircling bearing sleeve, c. there being a cam block disposed between said spring leaf and said recessed bearing sleeve to exert a force on said cam engaging edge to maintain said hinge closed, said force resulting from the combined resiliency of said spring leaf and said one hinge knuckle.
Claim 3
Dependent Claim
33 words
A hinge according to claim 1 wherein said recessed bearing sleeve is of substantially uniform radius and wherein said cam block includes a portion of arcuate cross-section for camming engagement of said edge.
Claim 4
Dependent Claim
68 words
a first hinge leaf characterized by; a. a mounting plate, b. a spaced pair of hinge knuckles extending from said mounting plate, c. the terminal ends of said hinge knuckles being curled to form a pair of spaced, coaxially aligned bearing sleeves receiving said hinge pin, d. each of said bearing sleeves incompletely encircling said hinge pin to provide a notch or recess having a cam engaging edge,
Claim 5
Dependent Claim
68 words
a first hinge leaf characterized by; a. a mounting plate, b. a spaced pair of hinge knuckles extending from said mounting plate, c. the terminal ends of said hinge knuckles being curled to form a pair of spaced, coaxially aligned bearing sleeves receiving said hinge pin, d. each of said bearing sleeves incompletely encircling said hinge pin to provide a notch or recess having a cam engaging edge,
Claim 6
Dependent Claim
99 words
second hinge leaf characterized by; e. an attachment plate, f. at least one hinge knuckle extending from said attachment plate, g. the end of said one knuckle being curled to form a central bearing sleeve situated between and in coaxial, hinge pin receiving alignment with said pair of notched bearing sleeves, h. first and second spring leaves extending integrally from said attachment plate on oppposite sides of said one knuckle and projecting laterally thereof in the same direction as said central bearing sleeve, said spring leaves being respectively radially spaced from but opposed to said notched bearing sleeves, and
Claim 7
Dependent Claim
99 words
second hinge leaf characterized by; e. an attachment plate, f. at least one hinge knuckle extending from said attachment plate, g. the end of said one knuckle being curled to form a central bearing sleeve situated between and in coaxial, hinge pin receiving alignment with said pair of notched bearing sleeves, h. first and second spring leaves extending integrally from said attachment plate on oppposite sides of said one knuckle and projecting laterally thereof in the same direction as said central bearing sleeve, said spring leaves being respectively radially spaced from but opposed to said notched bearing sleeves, and
Claim 8
Dependent Claim
32 words
A self-latching hinge according to claim 2 wherein said spring leaf has an arcuate cross-section and wherein said cam block is configured to maintain engagement with said spring leaf during flexure thereof.
Claim 9
Dependent Claim
60 words
A hinge according to claim 1 wherein said one member includes a plurality of like hinge knuckles and wherein said other member includes a plurality of spaced spring leaves alternating with ones of a plurality of hinge knuckles, and wherein said cam block includes a part disposed between each spring leaf and the corresponding one of said like hinge knuckles.
Claim 10
Dependent Claim
38 words
a cam block having force transmitting parts disposed between said integral spring leaves and the respective notched bearing sleeves so that upon closing of said hinge said cam block engages said edge releasably to maintain said hinge closed.
Claim 11
Dependent Claim
38 words
a cam block having force transmitting parts disposed between said integral spring leaves and the respective notched bearing sleeves so that upon closing of said hinge said cam block engages said edge releasably to maintain said hinge closed.
Claim 12
Dependent Claim
39 words
A hinge according to claim 4 wherein the free end of each spring leaf is flanged for retention of said cam block and wherein longitudinal sliding of said cam block is limited by an offset section between said parts.
Claim 13
Dependent Claim
4 words
A self-latching hinge comprising:
Claim 14
Dependent Claim
4 words
A self-latching hinge comprising:
Claim 15
Dependent Claim
46 words
A self-latching hinge according to claim 6 wherein the free end of each spring leaf is flanged for retention of said cam block and wherein sliding of said cam block parallel to said hinge pin is limited by an offset projection between said force transmitting parts.
Claim 16
Dependent Claim
26 words
A self-latching hinge according to claim 6 wherein said cam block parts each include a portion of arcuate cross-section for camming engagement of said notch edge.
Claim 17
Dependent Claim
44 words
A self-latching hinge according to claim 8 wherein said second hinge leaf further includes another pair of hinge knuckles disposed on Opposite sides of said spring leaves and having hinge pin encircling bearing sleeves coaxially aligned with and separated by said notched bearing sleeves.
Claim 18
Dependent Claim
48 words
A self-latching hinge according to claim 1 wherein said other member includes an integral mounting plate, said planar section extending generally perpendicularly from said mounting plate, the end of said spring leaf furthest from said mounting plate being free and curled to exert force toward said hinge pin.
References Cited (Backward Citations)
US2872697A
Cited
US3381332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |