US5388912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear motion rolling guide unit
Assignee: Nippon Thompson Co Ltd
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Filing: 1993-12-14
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Granted: 1995-02-14
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Expires: 2013-12-14
Abstract
Abstract The linear motion rolling guide unit according to this invention enables the under seals to be mounted to the end caps easily without being deformed as by buckling or without requiring high-precision machining. The under seal is provided, at its longitudinal ends, with locking bands that engage with engagement grooves formed in the end caps. Mounting and dismounting the under seal to and from the end caps are accomplished by expanding the locking bands in the longitudinal direction of the under seal. The under seal is allowed to undergo longitudinal and lateral deformations with respect to the end caps, which deformations caused by external force, thermal expansion and swelling. This construction prevents deformation of the under seal such as caused by buckling and improves the sealing performance.
Inventors
- 👤 Norimasa Agari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:07
CPC Classifications
F; F16; F16C; F16C29/00; F16C29/08; F16C29/084; F16C29/088; F16C2322/00; F16C2322/39; F16C2370/00; F16C29/04; F16C29/06; F16C29/0633; F16C29/0635; F16C29/0638; F16C29/064
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
203 words
A linear motion rolling guide unit comprising: a track rail having first raceway grooves formed on longitudinally extending side wall surfaces thereof; a casing slidable relative to the track rail and, having second raceway grooves formed at positions, facing the first raceway grooves; end caps mounted to the longitudinal ends of the casing; rolling elements circulating through raceways formed between the first raceway grooves and the second raceway grooves; and, under seals arranged on the undersides of the casing and the end caps, the under seals including elastic seal members for sealing the casing, the end caps and the track rail and core members secured to the elastic seal members; wherein the under seals have locking bands extending laterally outwardly from the longitudinal ends of each core member and locking detents formed by bending the free ends of the locking bands toward the end caps; and wherein the end caps are formed, at their lower portion on the side opposite the casing, with longitudinally extending engagement grooves and with locking grooves formed at the outer ends of the engagement grooves, and the locking bands and the locking detents of the under seals are fitted into the engagement grooves and the locking grooves, respectively.
Claim 2
Dependent Claim
203 words
A linear motion rolling guide unit comprising: a track rail having first raceway grooves formed on longitudinally extending side wall surfaces thereof; a casing slidable relative to the track rail and, having second raceway grooves formed at positions, facing the first raceway grooves; end caps mounted to the longitudinal ends of the casing; rolling elements circulating through raceways formed between the first raceway grooves and the second raceway grooves; and, under seals arranged on the undersides of the casing and the end caps, the under seals including elastic seal members for sealing the casing, the end caps and the track rail and core members secured to the elastic seal members; wherein the under seals have locking bands extending laterally outwardly from the longitudinal ends of each core member and locking detents formed by bending the free ends of the locking bands toward the end caps; and wherein the end caps are formed, at their lower portion on the side opposite the casing, with longitudinally extending engagement grooves and with locking grooves formed at the outer ends of the engagement grooves, and the locking bands and the locking detents of the under seals are fitted into the engagement grooves and the locking grooves, respectively.
Claim 3
Dependent Claim
32 words
A linear motion rolling guide unit according to claim 1, wherein the locking bands of the under seals have elasticity that allows the locking detents to elastically engage with the locking grooves.
Claim 4
Dependent Claim
41 words
A linear motion rolling guide unit according to claim 1, wherein the locking bands of the under seals are formed in a curved shape so that they can be elastically elongated or contracted in the lateral direction of the end caps.
Claim 5
Dependent Claim
41 words
A linear motion rolling guide unit according to claim 1, wherein the elastic seal members of the under seals have a bulge that bears on the undersides of the end caps when the under seals are mounted to the end caps.
References Cited (Backward Citations)
JPH031220A
Cited
JPH0398321A
Cited
JPH03118317A
Cited
US5087130A
Cited
JPH054128A
Cited
US5209575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-02-13 | 1998-08-15 | 1999-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-13 | 2002-08-15 | 2003-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-13 | 2006-08-15 | 2007-02-14 | $7700.00 | Window Closed / Lapsed |