Patent US3489136A successfully refreshed from Google Patents.
Patent US3854418A successfully refreshed from Google Patents.
US3854418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvements in rack-and-pinion systems
Assignee: Bertin Technologies SAS
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Filing: 1973-03-01
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Granted: 1974-12-17
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Expires: 1993-03-01
Abstract
Abstract The invention comprehends a rack-and-pinion system the rack having a rigid longitudinal base adapted to withstand the forces which the pinion applies to the rack, and a resilient element in band or strip or similar form which adheres to the rigid base over the whole length thereof and which receives the force from the pinion.
Inventors
- 👤 J Bertin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:49
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/02; F16H55/26; B; B61; B61B; B61B13/00; B61B13/04; F16H55/06; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/1967
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
86 words
A rack-and-pinion system including a rack and a toothed pinion in mutual meshing engagement, said rack comprising: a rigid longitudinal base having a proximal face with respect to the pinion; and a resilient longitudinal element having: a distal face with respect to the pinion, which distal face rests upon and is fixed to said proximal face of the said rigid longitudinal base, and a proximal face with respect to the pinion, which proximal face is shaped into corrugations adapted to engage the teeth of the pinion.
Claim 2
Dependent Claim
86 words
A rack-and-pinion system including a rack and a toothed pinion in mutual meshing engagement, said rack comprising: a rigid longitudinal base having a proximal face with respect to the pinion; and a resilient longitudinal element having: a distal face with respect to the pinion, which distal face rests upon and is fixed to said proximal face of the said rigid longitudinal base, and a proximal face with respect to the pinion, which proximal face is shaped into corrugations adapted to engage the teeth of the pinion.
Claim 3
Dependent Claim
53 words
System as claimed in claim 1, wherein said proximal face of the rigid longitudinal base, and said distal face of the resilient longitudinal element which rests thereupon, are also both shaped into corrugations having the same pitch as and coextensive with the said corrugations of said proximal face of the resilient longitudinal element.
Claim 4
Dependent Claim
42 words
System as claimed in claim 2, wherein said rigid longitudinal base comprises a strip of corrugated sheet-metal having a proximal face with respect to the pinion, whereupon the said resilient longitudinal element rests, and a distal face with respect to the pinion.
Claim 5
Dependent Claim
28 words
System as claimed in claim 3, wherein said distal face of the strip of corrugated sheet-metal bounds a space, said system further comprising vibration-damping material filling said space.
Claim 6
Dependent Claim
29 words
System as claimed in claim 2, wherein the thickness of the said resilient longitudinal element, measured between the two corrugated faces of said element, is variable along a corrugation.
Claim 7
Dependent Claim
47 words
System as claimed in claim 5, wherein the thickness of the said resilient element is at a minimum in the region where the pitch circle of the pinion meets the rack, and increases from said region towards both the crest and the root of The said corrugation.
Claim 8
Dependent Claim
31 words
System as claimed in claim 1, wherein said proximal face of the rigid longitudinal base, and said distal face of the resilient longitudinal element which rests thereupon, are both substantially planar.
Claim 9
Dependent Claim
34 words
System as claimed in claim 1, further comprising a lining which coats the said corrugated proximal face of the resilient longitudinal element, via which lining said corrugated face engages the teeth of the pinion.
Claim 10
Dependent Claim
15 words
System as claimed in claim 8, wherein said lining is made of hardened rubber-based material.
Claim 11
Dependent Claim
15 words
System as claimed in claim 8, wherein said lining comprises a strip of corrugated sheet-metal.
Claim 12
Dependent Claim
16 words
System as claimed in claim 10, wherein said strip of sheet-metal is of substantially uniform thickness.
Claim 13
Dependent Claim
38 words
System as claimed in claim 10, wherein said rigid longitudinal base comprises a substantially planar strip of sheet-metal which together with said strip of corrugated sheet-metal defines a space, which space is filled with said resilient longitudinal element.
Claim 14
Dependent Claim
29 words
System as claimed in claim 1, wherein the rack is coated with a substance which has a low coefficient of friction with respect to the teeth of the pinion.
Claim 15
Dependent Claim
33 words
System as claimed in claim 1, wherein the rack has a number of sections placed end-to-end, and wherein two consecutive sections of said rack are interconnected in the root region of a corrugation.
Claim 16
Dependent Claim
33 words
System as claimed in claim 1, wherein the rack has a number of sections placed end-to-end, and wherein two consecutive sections of said rack are interconnected in the crest region of a corrugation.
Claim 17
Dependent Claim
16 words
System as claimed in claim 1, wherein said resilient longitudinal element is made of rubber-based material.
Claim 18
Dependent Claim
17 words
System as claimed in claim 1, wherein said resilient longitudinal element is made of resilient silicone-based material.
Claim 19
Dependent Claim
113 words
A rack-and-pinion system for use as a means for driving a machine along a track, said system comprises a toothed pinion carried by the machine and a rack disposed along the track, said pinion and rack being in mutual meshing engagement, said rack comprising: a rigid longitudinal base having a proximal face with respect to the pinion; and a resilient longitudinal element having: a distal face with respect to the pinion, which distal face rests upon and is fixed to said proximal face of the said rigid longitudinal base, and a proximal face with respect to the pinion, which proximal face is shaped into corrugations adapted to engage the teeth of the pinion.
Claim 20
Dependent Claim
113 words
A rack-and-pinion system for use as a means for driving a machine along a track, said system comprises a toothed pinion carried by the machine and a rack disposed along the track, said pinion and rack being in mutual meshing engagement, said rack comprising: a rigid longitudinal base having a proximal face with respect to the pinion; and a resilient longitudinal element having: a distal face with respect to the pinion, which distal face rests upon and is fixed to said proximal face of the said rigid longitudinal base, and a proximal face with respect to the pinion, which proximal face is shaped into corrugations adapted to engage the teeth of the pinion.
References Cited (Backward Citations)
US2652785A
Cited
US3229543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |