US4641866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lever handle door trim
Assignee: Von Duprin LLC
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Filing: 1985-11-12
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Granted: 1987-02-10
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Expires: 2005-11-12
Abstract
Abstract The invention comprises a lever handle having a handle-shaft receiving cam which is used to displace a slider to effect the retraction of a latchbolt. A yoke is positioned between the cam and slider to accommodate, adjustably, for handle droop. The yoke has a tapped hole and receives a machine screw which also penetrates an arcuate slot in the slider. Displacement of the yoke relative to the slot, corrects the handle droop by causing the cam to be slightly tilted. Accordingly, the handle shaft in the cam is correspondingly rotated about its axis, and the handle is brought into alignment with the horizontal.
Inventors
- 👤 Paul J. Haeck
- 👤 Gary R. Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:29
CPC Classifications
E; E05; E05C; E05C1/00; E05C1/08; E05C1/12; E05C1/16; Y; Y10; Y10S; Y10S292/00; Y10S292/60; Y10T; Y10T292/00; Y10T292/57; Y10T292/82; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18288; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20744; Y10T74/21; Y10T74/2101
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
135 words
Lever handle door trim, comprising: a slider, movable along a vertical axis for operating an exit device latching mechanism for a latchbolt, to cause retraction of said latchbolt; a cam, for effecting movement of said slider; said cam having a body portion with an opening formed therein in which to receive a lever handle shaft; said opening having a radial center defining a rotary axis for such a lever handle shaft; said cam further having a pair of lobes extending outwardly from opposite sides of said body portion along a horizontal plane; and means interposed between, and engaging both, said slider and said cam, and adjustable for causing said cam to be selectively displaced through an acute angle, relative to said rotary axis, to dispose said cam at a tilt relative to said horizontal plane.
Claim 2
Dependent Claim
135 words
Lever handle door trim, comprising: a slider, movable along a vertical axis for operating an exit device latching mechanism for a latchbolt, to cause retraction of said latchbolt; a cam, for effecting movement of said slider; said cam having a body portion with an opening formed therein in which to receive a lever handle shaft; said opening having a radial center defining a rotary axis for such a lever handle shaft; said cam further having a pair of lobes extending outwardly from opposite sides of said body portion along a horizontal plane; and means interposed between, and engaging both, said slider and said cam, and adjustable for causing said cam to be selectively displaced through an acute angle, relative to said rotary axis, to dispose said cam at a tilt relative to said horizontal plane.
Claim 3
Dependent Claim
213 words
Lever handle door trim, comprising: a slider, movable along a vertical axis for operating an exit device latching mechanism for a latchbolt, to cause retraction of said latchbolt; a cam, for effecting movement of said slider; said cam having a body portion with an opening formed therein in which to receive a lever handle shaft; said opening having a radial center defining a rotary axis for such a lever handle shaft; said cam further having a pair of lobes extending outwardly from opposite sides of said body portion along a horizontal plane; and means interposed between, and engaging both, said slider and said cam, and adjustable for causing said cam to be selectively displaced through an acute angle, relative to said rotary axis, to dispose said cam at a tilt relative to said horizontal plane; wherein said means comprises a generally U-shaped, yoke-type element; said element has a pair of abutments, formed on opposite ends thereof, in contacting engagement with said lobes; said element is removably fastened to said slider for vertical travel coincident with said slider; said element has a tapped hole formed therein; said slider has an arcuate slot formed therein; and a headed fastener is threadedly engaged with said tapped hole, and has its shank in penetration of said slot.
Claim 4
Dependent Claim
213 words
Lever handle door trim, comprising: a slider, movable along a vertical axis for operating an exit device latching mechanism for a latchbolt, to cause retraction of said latchbolt; a cam, for effecting movement of said slider; said cam having a body portion with an opening formed therein in which to receive a lever handle shaft; said opening having a radial center defining a rotary axis for such a lever handle shaft; said cam further having a pair of lobes extending outwardly from opposite sides of said body portion along a horizontal plane; and means interposed between, and engaging both, said slider and said cam, and adjustable for causing said cam to be selectively displaced through an acute angle, relative to said rotary axis, to dispose said cam at a tilt relative to said horizontal plane; wherein said means comprises a generally U-shaped, yoke-type element; said element has a pair of abutments, formed on opposite ends thereof, in contacting engagement with said lobes; said element is removably fastened to said slider for vertical travel coincident with said slider; said element has a tapped hole formed therein; said slider has an arcuate slot formed therein; and a headed fastener is threadedly engaged with said tapped hole, and has its shank in penetration of said slot.
Claim 5
Dependent Claim
179 words
Lever handle door trim, comprising: a slider, movable along a vertical axis for operating an exit device latching mechanism for a latchbolt, to cause retraction of said latchbolt; a cam, for effecting movement of said slider; said cam having a body portion with an opening formed therein in which to receive a lever handle shaft; said opening having a radial center defining a rotary axis for such a lever handle shaft; said cam further having a pair of lobes extending outwardly from opposite sides of said body portion along a horizontal plane; and means interposed between, and engaging both, said said slider and said cam, and adjustable for causing said cam to be selectively displaced through an acute angle, relative to said rotary axis, to dispose said cam at a tilt relative to said horizontal plane; wherein said means comprises a generally U-shaped, yoke-type element; said element has a pair of abutments, formed on opposite ends thereof, in contacting engagement with said lobes; and said element is removably fastened to said slider for vertical travel coincident with said slider.
Claim 6
Dependent Claim
179 words
Lever handle door trim, comprising: a slider, movable along a vertical axis for operating an exit device latching mechanism for a latchbolt, to cause retraction of said latchbolt; a cam, for effecting movement of said slider; said cam having a body portion with an opening formed therein in which to receive a lever handle shaft; said opening having a radial center defining a rotary axis for such a lever handle shaft; said cam further having a pair of lobes extending outwardly from opposite sides of said body portion along a horizontal plane; and means interposed between, and engaging both, said said slider and said cam, and adjustable for causing said cam to be selectively displaced through an acute angle, relative to said rotary axis, to dispose said cam at a tilt relative to said horizontal plane; wherein said means comprises a generally U-shaped, yoke-type element; said element has a pair of abutments, formed on opposite ends thereof, in contacting engagement with said lobes; and said element is removably fastened to said slider for vertical travel coincident with said slider.
Claim 7
Dependent Claim
27 words
Lever handle door trim, according to claim 3, wherein: said element has an arcuate cove formed therein, and drawn on a given radius from said rotary axis.
Claim 8
Dependent Claim
30 words
Lever handle door trim, according to claim 4, wherein: said body portion of said cam has an arcuate surface formed thereon, and drawn on another radius from said rotary axis.
Claim 9
Dependent Claim
24 words
Lever handle door trim, according to claim 5, wherein: said arcuate surface of said body portion is nested within said cove of said element.
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) | 1990-02-09 | 1990-08-11 | 1991-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-09 | 1994-08-11 | 1995-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-09 | 1998-08-11 | 1999-02-10 | $7700.00 | Window Closed / Lapsed |