US3887155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescoping support mechanism
Assignee: US Philips Corp
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Filing: 1973-12-07
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Granted: 1975-06-03
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Expires: 1993-12-07
Abstract
Abstract A telescoping support arm of quadrangular cross-section has roller bearings in diametral corner spaces between each two tubes surrounding each other, the rollers in one corner rolling over separate races supported on resilient means urging the rollers and the inner tube toward the other corner so as to exclude backlash.
Inventors
- 👤 Silvio Bertalot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:58
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/30; F16C33/46; F16C33/48; F16B; F16B7/00; F16B7/10; F16C29/00; F16C29/04; F16M; F16M11/00; F16M11/20; F16M11/24; F16M11/26; F16M11/28; F21; F21V; F21V21/00; F21V21/14; F21V21/22
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
172 words
A telescoping support mechanism comprising an outer tublar member of substantially square cross-section, an inner tubular member of similar and smaller square cross-section adapted to slide telescopically within said first member with an annular space difined between said members with facing, spaced-apart inner and outer surfaces respectively of said outer and inner members on each of the four sides of said square, namely side A, opposite side AA, side B between sides A and AA, and side BB opposite side B, bearing means between said facing surfaces on each of said four sides, a race intermediate said bearing means and outer surface on sides A and B, spring means intermediate each of said races and said adjacent inner surface urging said race, adjacent bearing means, and outer surface on sides A and B into a non-backlash fit, and further urging said facing surfaces and intermediate bearing means of side AA into a non-backlash fit, side B having non-backlash means similar to side A with corresponding non-backlash fit on sides B and BB.
Claim 2
Dependent Claim
172 words
A telescoping support mechanism comprising an outer tublar member of substantially square cross-section, an inner tubular member of similar and smaller square cross-section adapted to slide telescopically within said first member with an annular space difined between said members with facing, spaced-apart inner and outer surfaces respectively of said outer and inner members on each of the four sides of said square, namely side A, opposite side AA, side B between sides A and AA, and side BB opposite side B, bearing means between said facing surfaces on each of said four sides, a race intermediate said bearing means and outer surface on sides A and B, spring means intermediate each of said races and said adjacent inner surface urging said race, adjacent bearing means, and outer surface on sides A and B into a non-backlash fit, and further urging said facing surfaces and intermediate bearing means of side AA into a non-backlash fit, side B having non-backlash means similar to side A with corresponding non-backlash fit on sides B and BB.
Claim 3
Dependent Claim
172 words
A telescoping support mechanism comprising an outer tublar member of substantially square cross-section, an inner tubular member of similar and smaller square cross-section adapted to slide telescopically within said first member with an annular space difined between said members with facing, spaced-apart inner and outer surfaces respectively of said outer and inner members on each of the four sides of said square, namely side A, opposite side AA, side B between sides A and AA, and side BB opposite side B, bearing means between said facing surfaces on each of said four sides, a race intermediate said bearing means and outer surface on sides A and B, spring means intermediate each of said races and said adjacent inner surface urging said race, adjacent bearing means, and outer surface on sides A and B into a non-backlash fit, and further urging said facing surfaces and intermediate bearing means of side AA into a non-backlash fit, side B having non-backlash means similar to side A with corresponding non-backlash fit on sides B and BB.
Claim 4
Dependent Claim
172 words
A telescoping support mechanism comprising an outer tublar member of substantially square cross-section, an inner tubular member of similar and smaller square cross-section adapted to slide telescopically within said first member with an annular space difined between said members with facing, spaced-apart inner and outer surfaces respectively of said outer and inner members on each of the four sides of said square, namely side A, opposite side AA, side B between sides A and AA, and side BB opposite side B, bearing means between said facing surfaces on each of said four sides, a race intermediate said bearing means and outer surface on sides A and B, spring means intermediate each of said races and said adjacent inner surface urging said race, adjacent bearing means, and outer surface on sides A and B into a non-backlash fit, and further urging said facing surfaces and intermediate bearing means of side AA into a non-backlash fit, side B having non-backlash means similar to side A with corresponding non-backlash fit on sides B and BB.
Claim 5
Dependent Claim
24 words
Apparatus according to claim 1 wherein said bearing means comprise roller bearing elements having axis normal to the axial direction of said tubular elements.
Claim 6
Dependent Claim
45 words
Apparatus according to claim 1 further comprising a third tubular member similar to and inside said inner tubular member, and bearing means, race, and spring means on two sides thereof adjacent and corresponding to sides A and B of said outer and inner tubular members.
Claim 7
Dependent Claim
34 words
Apparatus according to claim 1 wherein said bearing means on said adjacent sides A and B have mutually adjacent edges along their length and are joined along said edges forming in cross-section an L-shape.
Claim 8
Dependent Claim
28 words
Apparatus according to claim 4 wherein said bearing means on said adjacent sides AA and BB are joined similarly to said bearing means on sides A and B.
Claim 9
Dependent Claim
38 words
Apparatus according to claim 5 wherein said bearing means comprise an L-shaped frame formed by two leg parts extending lengthwise in said annular space, and a plurality of spaced-apart roller bearings mounted on each leg of the frame.
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |