Patent US3596946A successfully refreshed from Google Patents.
US3596946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cam lock for telescopic members
Assignee: Wooster Brush Co
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Filing: 1970-03-09
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Granted: 1971-08-03
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Expires: 1990-03-09
Abstract
Abstract Cam lock for telescoping members comprises a plug adapted to be partially received in one end of the inner telescoping member and having an outwardly projecting portion containing an eccentric groove for receipt of a correspondingly shaped eccentric collar or ring. Rotation of the collar within the groove is limited between an eccentric position frictionally engaging the outer telescoping member and a concentric position permitting relative movement between such telescoping members by a projection or stop in the plug groove extending into a slot in the collar to obtain unidirectional locking and unlocking of the outer telescoping member with respect to the inner telescopic member upon relative rotation of such members in opposite directions.
Inventors
- 👤 Charles A Burton
- 👤 Howard C Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:44
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/10; F16B7/14; F16B7/1427; B; B05; B05C; B05C17/00; B05C17/02; B05C17/0205; B25; B25G; B25G1/00; B25G1/04; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32467; Y10T403/32475; Y10T403/32501; Y10T403/70; Y10T403/7062; Y10T403/7064
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
143 words
A cam lock for a pair of inner and outer telescoping members comprising a plug projecting from one end of said inner telescoping member, an eccentric groove in the outer periphery of said projecting plug, an eccentric collar in said groove, said eccentric collar having a substantially completely annular outer cylindrical surface and an eccentric opening therein for receipt of said collar in said groove, a circumferentially extending slot in said collar, and a projection on said plug received in said slot in said collar for limiting rotation of said collar within said groove in opposite directions between a concentric position permitting longitudinal adjustment of said outer member with respect to said inner member and an eccentric position in which said collar and plug frictionally engage opposite sides of said outer member for locking said inner and outer members in longitudinal adjusted position.
Claim 2
Dependent Claim
143 words
A cam lock for a pair of inner and outer telescoping members comprising a plug projecting from one end of said inner telescoping member, an eccentric groove in the outer periphery of said projecting plug, an eccentric collar in said groove, said eccentric collar having a substantially completely annular outer cylindrical surface and an eccentric opening therein for receipt of said collar in said groove, a circumferentially extending slot in said collar, and a projection on said plug received in said slot in said collar for limiting rotation of said collar within said groove in opposite directions between a concentric position permitting longitudinal adjustment of said outer member with respect to said inner member and an eccentric position in which said collar and plug frictionally engage opposite sides of said outer member for locking said inner and outer members in longitudinal adjusted position.
Claim 3
Dependent Claim
21 words
The cam lock of claim 1 wherein said eccentric collar has a shape substantially corresponding to the shape of said groove.
Claim 4
Dependent Claim
30 words
The cam lock of claim 1 wherein said slot extends approximately 180* circumferentially of said collar thereby permitting rotation of said collar approximately 180* between such concentric and eccentric positions.
Claim 5
Dependent Claim
32 words
The cam lock of claim 1 wherein said circumferentially extending slot is formed in one end of said collar, and said projection extends into said slot from one side of said groove.
Claim 6
Dependent Claim
40 words
The cam lock of claim 1 wherein said collar is split and is made of a flexible material to facilitate assembly onto said plug and insure frictional sliding contact between said collar and the inner diameter of said outer member.
Claim 7
Dependent Claim
33 words
The cam lock of claim 5 further comprising a taper on the forward end of said plug which provides a ramp for sliding said collar up onto said plug and into said groove.
Claim 8
Dependent Claim
32 words
The cam lock of claim 1 wherein said slot is intermediate the ends of said collar, and said projection is a pin projecting into said slot from the bottom of said groove.
Claim 9
Dependent Claim
46 words
The cam lock of claim 1 further comprising a legend on said outer member adjacent the forward end thereof indicating the required direction for rotating said outer member relative to said inner member for locking and unlocking said inner and outer members in longitudinal adjusted position.
Claim 10
Dependent Claim
160 words
A cam lock for a pair of inner and outer telescoping members comprising a plug projecting from one end of said inner telescoping member, an eccentric groove in the outer periphery of said projecting plug, an eccentric collar in said groove, a slot in said collar, and a projection on said plug received in said slot for limiting rotation of said collar within said groove in opposite directions between a concentric position permitting longitudinal adjustment of said outer member with respect to said inner member and an eccentric position in which said collar and plug frictionally engage opposite sides of said outer member for locking said inner and outer members in longitudinal adjusted position, said slot extending approximately 180* in said collar thereby permitting rotation of said collar approximately 180* between such concentric and eccentric positions, said slot being intermediate the ends of said collar, said projection being a pin projecting into said slot from the bottom of said groove.
Claim 11
Dependent Claim
160 words
A cam lock for a pair of inner and outer telescoping members comprising a plug projecting from one end of said inner telescoping member, an eccentric groove in the outer periphery of said projecting plug, an eccentric collar in said groove, a slot in said collar, and a projection on said plug received in said slot for limiting rotation of said collar within said groove in opposite directions between a concentric position permitting longitudinal adjustment of said outer member with respect to said inner member and an eccentric position in which said collar and plug frictionally engage opposite sides of said outer member for locking said inner and outer members in longitudinal adjusted position, said slot extending approximately 180* in said collar thereby permitting rotation of said collar approximately 180* between such concentric and eccentric positions, said slot being intermediate the ends of said collar, said projection being a pin projecting into said slot from the bottom of said groove.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |