Patent EP0008907A1 successfully refreshed from Google Patents.
EP0008907A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Vehicle with track tensioning system
Assignee: Priestman Brothers Ltd
•
Filing: 1979-08-21
•
Granted: —
•
Expires: 1999-08-21
Abstract
Abstract System for automatically tensioning an endless track (4) of a tracklaying vehicle driven by a fluid motor (9). The system (8) comprises means (12,13,14,15 and 17) for supplying operating fluid to an adjusting cylinder (18) operatively coupled to a wheel (6) which supports the track (4) to cause the wheel (6) to be biased in a direction to tension the track (4). A pressure accumulator (16) may be provided for absorbing shock loads imposed from the track (4) on the adjusting cylinder (18).
Inventors
- 👤 Frank Melville Robinson
- 👤 Peter Roland Townsend
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 22:24
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
80 words
A track-laying vehicle (1) having an endless track (4) driven by a fluid motor (9), and a system (8) for automatically tensioning the track (4), characterized in that the system (8) comprises means (12, 13, 14, 15 and 17) for supplying operating fluid supplied to the fluid motor additionally to an adjusting cylinder (18) operatively coupled to a wheel (6) supporting the track (4) to cause the wheel (6) to be biased in a direction to tension the track (4).
Claim 2
Dependent Claim
80 words
A track-laying vehicle (1) having an endless track (4) driven by a fluid motor (9), and a system (8) for automatically tensioning the track (4), characterized in that the system (8) comprises means (12, 13, 14, 15 and 17) for supplying operating fluid supplied to the fluid motor additionally to an adjusting cylinder (18) operatively coupled to a wheel (6) supporting the track (4) to cause the wheel (6) to be biased in a direction to tension the track (4).
Claim 3
Dependent Claim
31 words
A vehicle according to claim 1, characterized in that the system (8) includes a pressure accumulator (16) for absorbing shock loads imposed from the track (4) on the adjusting cylinder (18).
Claim 4
Dependent Claim
31 words
A vehicle according to claim 1 or claim 2, characterized in that the adjusting cylinder (18) has a piston (21) operatively connected to a yoke (22) which supports the wheel (6).
Claim 5
Dependent Claim
29 words
A vehicle according to any of claims 1 to 3, characterized in that a pressure reducing valve (13) is disposed between the motor (9) and the adjusting cylinder (18).
Claim 6
Dependent Claim
27 words
A vehicle according to any of claims 1 to 4, characterized in that a shut-off valve (15)is disposed between the motor (9) and the adjusting cylinder (18).
Claim 7
Dependent Claim
38 words
A vehicle according to any of claims 1 to 5, characterized in that a pressure relief valve (19) is connected to the means for supplying pressure to the adjusting cylinder (18) to prevent over-tensioning of the track (4).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.