US4194406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lever mechanism
Assignee: FM Mattsson AB
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Filing: 1978-03-06
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Granted: 1980-03-25
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Expires: 1998-03-06
Abstract
Abstract A lever mechanism including a lever which is pivotally mounted between its ends on a pivot shaft forming two lever arms. One of the lever arms is arranged to receive a force applied thereto and the other of the lever arms has an end portion arranged to transmit movement and force to a working element. The end portion has part-cylindrical surfaces which cooperate with part-cylindrical surfaces on oppositely located slide blocks. Each slide block has a planar slide surface which is parallel to a shaft of the part-cylindrical surfaces of the end portion. The planar surface of each slide block is arranged to slidably abut a planar surface on the working element. The slide blocks are non-rotatably connected to each other via their planar slide surfaces in parallel planes by means of dogging elements which are pivotally mounted on the shaft of the part-cylindrical surfaces of the end portion.
Inventors
- 👤 John Bohlmark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:39
CPC Classifications
F; F16; F16H; F16H51/00; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32008; Y10T403/32057; Y10T74/00; Y10T74/18; Y10T74/18992
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
219 words
A lever mechanism comprising a lever (1) which is pivotally mounted between its ends on a pivot shaft (2) and one lever arm (1') of which lever is arranged to have a force applied thereto while the other lever arm (1") of which lever has an end portion arranged to transmit, via two mutually opposed part-cylindrical surfaces (10, 11), movement and force to a working element (5) adapted to be moved along a guide means (9) carrying said working element in response to movement of the lever, characterised in that cooperating with respective part-cylindrical surfaces (10, 11) on said end portion is a part-cylindrical surface on a slide block (6) having the same radius as the part-cylindrical surface cooperating with said end portion, said slide block having remote from its part-cylindrical surface a planar slide surface (15) which is parallel with the shaft of the part-cylindrical surface of the slide block and which planar slide surface is arranged to slidably abut a planar surface (16) on said working element (5); and in that the two slide blocks are non-rotatably connected to one another via their planar slide surfaces in parallel planes by means of dogging elements (7) which in turn are pivotally mounted on a central rotation shaft (8) arranged between the two part-cylindrical surfaces of the end portions.
Claim 2
Dependent Claim
219 words
A lever mechanism comprising a lever (1) which is pivotally mounted between its ends on a pivot shaft (2) and one lever arm (1') of which lever is arranged to have a force applied thereto while the other lever arm (1") of which lever has an end portion arranged to transmit, via two mutually opposed part-cylindrical surfaces (10, 11), movement and force to a working element (5) adapted to be moved along a guide means (9) carrying said working element in response to movement of the lever, characterised in that cooperating with respective part-cylindrical surfaces (10, 11) on said end portion is a part-cylindrical surface on a slide block (6) having the same radius as the part-cylindrical surface cooperating with said end portion, said slide block having remote from its part-cylindrical surface a planar slide surface (15) which is parallel with the shaft of the part-cylindrical surface of the slide block and which planar slide surface is arranged to slidably abut a planar surface (16) on said working element (5); and in that the two slide blocks are non-rotatably connected to one another via their planar slide surfaces in parallel planes by means of dogging elements (7) which in turn are pivotally mounted on a central rotation shaft (8) arranged between the two part-cylindrical surfaces of the end portions.
Claim 3
Dependent Claim
19 words
A lever mechanism according to claim 1, characterised in that all part-cylindrical surfaces have substantially the same axial length.
Claim 4
Dependent Claim
50 words
A lever mechanism according to claim 1 or 2, characterised in that each dogging element (7) comprises a plate whose centre is rotatably mounted on the rotation shaft (8) and the mutually opposing end portions of which are non-rotatably connected with the ends of respective slide blocks facing the plates.
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) | 1983-03-25 | 1983-09-24 | 1984-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-25 | 1987-09-24 | 1988-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-25 | 1991-09-24 | 1992-03-25 | $7700.00 | Window Closed / Lapsed |